8.12.2011 - green laser pointer is a green instrument

Checkerboard display images, ordinary cameras have captured images on a checkerboard, had a deformed, with each point on the display points -not that it has a corresponding relationship to record the coordinates of each corresponding point, such as (X,) show recorded cases of x Y, the point on the display table Y. green laser pointer  is a green instrument that creates green teaching environment. (with image midpoint (1 corresponds to the point to identify a x ') yx') Y is when an infrared 200mW Laser Pointer  coordinates, marked off from its x Y which four sub-point checkerboard angles, take 2 image processing algorithm design module 1 of the coordinates recently, it belongs to a small board which grid, should be on the big screen that can also be obtained on the checkerboard. to have a small deformation of the diagonal checkerboard coordinates to construct a rectangle, by that point in a small checkerboard calculate its position within the corresponding display coordinates within the checkerboard; rectangle using only a diagonal structure calculations exist two infrared laser point recognition algorithm 2 errors, this diagonal to another similar approach, both obtained after the average is calculated as follows for the most. This kind of 5mW laser pointer  adopts a mini design.Therefore, the first coordinate transformation, in the corresponding position on the instructions sent to the mouse click, and then initialize the parameters, no mouse conversion instructions to send back to S ru g state; and turn ld de a  for double state (et u lCik next, if there are 7 images in Lf Dobe l) c, such as points, the last recorded time and time interval of time>, the t 6 0 and t its position 0, where S reto ot left  checkerboard display screen angular coordinates, cL ft mP Table B t Bu Sr ih o P said the top right corner of the display coordinates of checkerboard points, Sreto P c gt pt RT cf pt LT said checkerboard display the upper left corner coordinates of the points, c ihB tmt show display Sr gtot P checkerboard tables R o lower right corner of screen coordinates; ae B t mP that the checkerboard image under C mL foottt left corner coordinates, C mRg toP said upper right corner of the image coordinates of checkerboard points, ai Tpt h shows a short time from the previous pause after a all keys that the user is still at the table in the press has been the key state, so the initialization parameters, time to remember at this time. The high power  100mW laser pointer  is not fit for using indoors. For sitting transfer C mL f oP the upper left corner shows the image coordinates of checkerboard points, a ih otm ta eTpt t C mRgt t PB o checkerboard lower right corner of the image coordinates of said point with the above approximate formula can benefit mid-infrared laser image point C meat for the coordinates of the points on the display to switch to Tast ar P rnP. standard, moving to the corresponding position, send show that moving the mouse cursor graphic symbols and instructions, return to H v P it states; if the image is no point, that the double transfer ae on strike operating like a table, so the first coordinate transformation, corresponding to the position Double-click the mouse to send to the operating commands, initialization parameters, and send no mouse conversion instructions, turn back again Sat de state. The high power   Blue Laser Pointer   is fit for pointing objects outdoors.

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7.12.2011 - green laser pointer products have directional property

When the laser parallel to the same degree, different wavelengths of laser have different focus limit, 10 640 far-infrared laser focus limit is about 532 green 20 times, as in other words, the same power, the 532 in the unit area of radiated power is 10 640 20 times, the gap is quite large. In general, the longer the wavelength of the laser, the Focus on the limit will be greater. 3 with the penetrating heat effect: laser destruction, mainly energy density. Therefore, the lower penetration of the laser, the energy density can have a better performance. The automatic frequency hopping technology used by green laser pointer can effectively block interference from other radio-frequency signals.However, the laser wavelength and penetration, and there is no absolute relationship between, such as air, the visible range is the longer the wavelength the stronger penetration. But in the long-wave infrared stage, it has significant thermal effects, so it's penetrating to become weak. Glass is also true, CO2 laser can be carved glass, but the 532 laser can not. So, for this, should first understand the characteristics of the target material impact on the penetration of various wavelengths. Blue Laser Pointer products have directional property.4 absorption: this is very important, different colors of objects on the various wavelengths of laser absorptive capacity has a very significant difference. With the absorption of the worst color, and white; by the absorption of the most obvious anti-color, and black rather. For example, the green laser is easy to point the red matches, and match point green is more strenuous. 5 Ionization: This part is mainly UV laser. UV laser with a high single-photon energy, so it can make the target ionization. For organic life forms, the UV laser ionization effect will destroy the activity of proteins and enzymes, which is the principle of UV light disinfection. So, UV laser destruction of life is undoubtedly one of the body of the strongest wavelength. The users don’t have to point the emitter of 200mW Laser Pointer to the receiver when use a green laser pointer.6 the sensitivity of the human eye: the human eye is about 550nm wavelength is most sensitive to yellow-green light, so in the visible range, the closer the wavelength of the laser, its lethality, the stronger the human eye. Seven. II and III laser pointer laser class difference between the Class Ⅰ laser with low output (power less than 0.4mW), regardless of the conditions under which the eyes and skin, will not exceed the MPE value, even after focusing through the optical system is not exceed the MPE value. Can guarantee the safety of the design without special management. Typical applications such as 100mW laser pointer , CD player, CD-ROM devices, geological prospecting equipment and laboratory analytical instruments. Class Ⅱ - "Caution" Class II level: Low output visible 5mW laser pointer (power 0.4mW-1mW), who closed the eyes of the reaction time of 0.25 seconds, use this time to calculate the exposure value can not exceed the MPE. Usually less than 1mW laser, normal exposure to the laser beam on the retina of the eye will not cause permanent damage, but will lead to dizziness can not think, with closed eyes to protect, can not say completely safe, not directly in the beam observe, do not use Class II laser direct exposure to other people's eyes, to avoid the use of Class II laser observation devices afar. Typical applications include classroom presentation, laser pointer, aiming devices and range finders, etc.

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6.12.2011 - Technology Development of green laser pointer

The technology development of green laser pointer is needed for the green laser pointer company. Early development of the laser focus on research output and short pulse tunable wavelength range of extensions. Today, dense wavelength division multiplexing (DWDM) and optical time division multiplexing technology, the rapid development and accelerate progress and stimulate the growing multi-wavelength fiber laser technology, fiber lasers and other supercontinuum progress. Meanwhile, the multi-wavelength fiber lasers and supercontinuum fiber lasers appear, for the cost to achieve Tb / s of DWDM or OTDM transmission provides the ideal solution. The technical means to achieve its view, the use of EDFA amplified spontaneous emission, femtosecond pulse technology, ultra-light-emitting diode technology are reported. Fiber laser at home and abroad for research and hotspots are mainly concentrated in high-power fiber lasers, high-power photonic crystal fiber lasers, tunable narrow linewidth fiber laser, multi-wavelength fiber lasers, nonlinear optical effects and ultrashort pulse fiber laser lasers and other aspects. The technology development of green laser pointer is very important to enhance the product quality of green laser pointer.
In 1962 the world's first since the advent of a GaAs semiconductor laser, more than 40 years of history, is now widely used in semiconductor lasers laser communication, optical storage, laser detection and other fields. With the continuous output power of semiconductor lasers increasing, expanding its scope of application, including high-power diode-pumped solid-state laser (DPSSL) is one of its largest applications. This technology combines semiconductor lasers and the advantages of solid-state lasers, semiconductor lasers not only for the solid-state laser wavelength conversion wavelength, but with improved beam quality and spectral width of compression, and the realization of the pulse output. Semiconductor lasers small size, light weight, direct electron injection with high quantum efficiency, can be controlled by adjusting the temperature of components and get a different wavelength and the absorption wavelength solid-state laser materials to match, but it is their poor beam quality, and asymmetry in both directions, horizontal model is also less than ideal. The solid-state laser output beam of high quality, with high temporal and spatial coherence, spectral width and beam divergence angle of a few orders of magnitude smaller than the semiconductor laser. For DPSSL, is to absorb high-energy photon wave length, into longer-wavelength low-energy photons, so there is always a part of a non-radiative transition of the energy converted to heat. How will this part of the heat energy from the massive dissemination of the laser medium, excluding a diode-pumped solid-state laser of key technologies. For this reason, people began to explore methods of increasing the cooling area. The technology development program of 200mW Laser Pointer has been improved.
One way is to make thin laser fiber shape of media. The so-called fiber lasers is to use fiber lasers for laser media, 1964 is the world's first generation of laser glass fiber laser. As the fiber core is very small, general pump source (such as gas discharge lamp) is difficult to focus on the core department. So after twenty years in the fiber lasers are not well developed. With the development of diode-pumped technology, and optical fiber communications needs of the booming, University of Southampton in 1987 and the U.S. Bell Labs experiments demonstrated erbium-doped fiber amplifier (EDFA) is feasible. It uses a semiconductor laser optically pumped erbium-doped single-mode fiber optical signal to achieve amplification, and now this EDFA in optical fiber communication has become indispensable devices. As to the semiconductor laser-pumped single-mode fiber into the core (diameter generally less than 10um), must also be required for the single-mode semiconductor laser, which makes it difficult to achieve high power single mode EDFA, the highest reported power just a few hundred mW. In order to improve power, around 1988, it was suggested by the optical pumping into the cladding. Initial design is the circular inner cladding, but the circular inner cladding perfect symmetry, making the pump absorption efficiency is not high, until the early nineties the emergence of a rectangular inner cladding, the laser conversion efficiency to 50%, output power of 5 watts. The technology development of 100mW laser pointer  has achieved a very good result.
1999, with four 45-watt diode laser pumped from both ends to obtain a continuous 110-watt single-mode laser output. The past two years, with the high-power diode-pumped double-clad fiber technology and production process development, fiber laser output power gradually increased, the current single-fiber, has achieved a 1000-watt laser output. Recently, optical fiber communication systems with extensive application and development of ultra-fast opto-electronics, nonlinear optics, optical sensing applications in various fields of research has been increasing attention. Among them, the matrix of the fiber laser for fiber in reducing the threshold, long-range oscillation wavelength tunable performance, etc., has been a marked progress, is the emerging field of optical communications technology, it can be used in existing communications systems, so that support higher transmission speeds, the future high bit rate DWDM systems and the basis for future coherent optical communications. Fiber laser technology is currently a hot research technologies. Fiber lasers due to their absolute ideal beam quality, high conversion efficiency, completely maintenance-free, high stability and small size, etc., the traditional laser industry have a tremendous and positive impact. The latest market survey: fiber laser suppliers will compete for solid-state lasers and other lasers in several key application areas of the market, and these market share steadily over the next few years will call. By 2010, the fiber laser will be occupied by at least $ 2.8 billion industrial laser market share of a quarter. The technology innovation of green laser pointer will be applied in the workshop.
Fiber laser sales will be more 35% annual growth rate of rise, from $ 140 million in 2005 to $ 680 million in 2010. The same period, industrial laser market increased by only 9% per year, $ 2.8 billion in 2010. Nankai University in 2002, reported the Yb3 +-doped double-clad fiber devices to get the pulse width 4. 8ns of the self-Q-Q-switched pulse output and mixed double-clad fiber laser to get peak power greater than 8kW, pulse width less than 2ns pulse output. Nankai University in 2003 reported the use of pulse peak power of 100kW pump to obtain Q-switched, and get the 60nm tunable Q-switched. November 20, 2003 reported that the Shanghai scientists have made new achievements in the laser field, the successful development of up to 107W output power fiber lasers. This laser is called "high-power ytterbium-doped double-clad fiber laser," compared with the currently available laser and its maintenance costs much lower power consumption, life is ordinary laser a few times. The technology development of 5mW laser pointer should be described in the report submitted to the manager of the company of Blue Laser Pointer .

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5.12.2011 - Intermediate Inspection of green laser pointer

Actually, intermediate inspection of green laser pointer is a kind of very important process. Readings are high and the horizon line of sight with a large number bar code image partition was treated averaged out, thereby undermining the scale partition errors. Most instruments have multiple readings and average features, can weaken the impact of external conditions. Unskilled operators can carry out high-precision measurement industry. Speed. By eliminating the reported number, listen to recorded, on-site computing time and the number of re-test of human error, measurement time compared with traditional instruments can save 1 / 3. And high efficiency. Just focus and keys can be automatically read, reduce labor intensity. Line of sight can also automatically record check, and can handle input into computer for post-processing can be integrated solid lines inside and outside the industry. Topcon DL Series electronic level as a member of the family. High performance, low price by the majority of users. DL series of beautiful shape, strong built-in features, menus feature-rich, user-friendly, have prompted all kinds of information, which greatly facilitates the actual operation. The manager insists that the intermediate inspection of 200mW Laser Pointer  should be performed strictly.
Semiconductor lasers based on semiconductor materials, do some physical work generated by the stimulated emission devices for the working principle is, by some incentives, in the semiconductor material of the band (the conduction band and valence band), or between the semiconductor material The band and impurity (acceptor or donor) level between the non-equilibrium carriers to achieve the population inversion, when inversion state in a large number of electron and hole recombination, the role of stimulated emission arises Semiconductor lasers, there are three main incentives that power injection, optical pump-and high-energy electron beam excitation type. power semiconductor laser injection, usually by GaAS (gallium arsenide), InAS (InAs), Insb ( InSb) semiconductor materials such as junction diodes along the forward bias injection current for incentives, in the end surface area produced by the stimulated emission. optically pumped semiconductor lasers, generally with N-type or P-type semiconductor crystal (such as GaAS, InAs, InSb, etc.) to do the work material, issued by other lasers for optical pumping of laser excitation. high-energy electron beam excitation semiconductor laser is generally used N-type or P-type semiconductor crystals (such as PbS, CdS, ZhO etc.) to do the work material, through high-energy electron beam injected from the outside to inspire in the semiconductor laser device, the current performance is better, is a broader application of the electric double-heterostructure GaAs diode laser injection. The intermediate inspection of 100mW laser pointer  has got a very good result.
Semiconductor laser works by incentives, the use of semiconductor materials (both electronic) transitions in the band between the light-emitting, semiconductor crystal cleavage plane to form two parallel mirrors as reflectors to form a resonant cavity, so that the light oscillation, feedback, produce light radiation amplification, the output laser. Semiconductor lasers advantage of small size, light weight, reliable operation, low power consumption and high efficiency. Semiconductor laser packaging technology, mostly in discrete packaging technology based on the development and evolved, but there is great specificity . In general, discrete devices die is sealed in the package body, the main role of packaging is to protect the die and complete the electrical interconnection. The semiconductor laser package is the complete output signal, to protect the die work, output: visible features, both electrical parameters, there are optical parameters of design and technical requirements, not simply discrete package for semiconductor lasers . Part of the core light-emitting semiconductor laser is p-type and n-type semiconductor pn junction consisting of the die, when injected into the pn junction of the minority carrier and majority carrier recombination time, we will send visible light, ultraviolet light or near infrared light. The intermediate inspection of Blue Laser Pointer will influence the quality review result of green laser pointer.
But pn junction emit photons non-directional, ie fired in all directions have the same probability, therefore, not all the light generated by the die can be released, depending on the quality of semiconductor materials, structure and geometry of the die , the internal structure and encapsulation materials, packaging, semiconductor lasers application requirements to improve internal and external quantum efficiency. Conventional semiconductor laser package Φ5mm side length is 0.25mm square die bonding or sintering the wire rack, die by the positive point of contact with the gold ball, for the inner lead bonding with a pin connected to the cathode through the reflector and the other pin is connected to the lead frame, and then the top with epoxy resin. The role of reflective glass to collect the side of the die, the light emitted by the interface to the desired direction of the angle of emission. Top made of epoxy resin encapsulation of a certain shape, such types of functions: to protect the die from the outside world such as erosion; different shapes and material properties (doped or not doped bulk reagent), or diffuse from the lens lens, control the light divergence angle; tube core refractive index of air associated with the large refractive index, resulting in the die is very small within the total reflection critical angle, the light generated by the active layer is removed only a small part of the most easily in by multiple reflections within the die has been absorbed, prone to result in excessive total reflection of light loss, the corresponding refractive index of the epoxy resin used to make the transition, to improve die efficiency of light emitted. The epoxy resin composition for shell and tube must have moisture resistance, insulation resistance, mechanical strength, the refractive index of light emitted by the die and the transmission rate. The customer is very satisfied with the intermediate inspection of 5mW laser pointer.
Select a different refractive index of packaging materials, packaging geometry of the efficiency of photon escape is different, the angular distribution of light intensity and structure of the die, the light output mode, the lens used in packaging material and shape. The use of a tapered resin lens can focus light to a semiconductor laser in the axial direction, the corresponding angle smaller; if the top of the resin lens is round or flat type, the corresponding angle will increase. Under normal circumstances, the semiconductor laser emission wavelength with temperature changes of 0.2-0.3nm / ℃, spectral width increases, affecting the color brightness. In addition, when the forward current flows through the pn junction, fever, loss of the junction of temperature rise, at room temperature near the temperature is increased by 1 ℃, light-emitting semiconductor laser intensity with a corresponding reduction of about 1%, package heat; keep color purity and luminous intensity is very important, in the past to use more ways to reduce the drive current and reduce the junction temperature, the majority of the semiconductor laser drive current is limited to 20mA or so. However, the semiconductor laser light output will increase with the increase of current, present, many power semiconductor laser drive current up to 70mA, 100mA or 1A level, need to improve the packaging structure, a new semiconductor laser package design and low heat resistance package structure and technology to improve the thermal characteristics. For example, using a large area flip-chip structure, selection of good thermal conductivity of silver plastic, metal stents increases the surface area of silicon carrier solder bump directly mounted on the upper heat sink method. The result of the intermediate inspection of green laser pointer should be recorded in the test report of green laser pointer.

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green laser pointer  can work stably and reliably. Operations, the strong laser beam shines at the first high-orbit space interrupted mirror. Interrupt mirror reflection to the laser beam in a low-orbit operations mirror, mirror operations targeting the laser beam again, attack. Through this two reflections, set in the free-electron laser weapons on the ground, you can attack from anywhere in the world launch of strategic missiles. High-energy laser weapon is an energy-based laser weapons and space vehicles of the combination. When this laser when cruising along the orbit space, if it is found the other goals can be put into combat. Because of its deployment in space, commanding, wide field of vision is even more powerful. In actual battle, it can be each other's aerial targets lightning attack to destroy the enemy's reconnaissance satellites, early warning satellites, communication satellites, meteorological satellites, and even each other's ICBM can destroy the increase in boost phase. 200mW Laser Pointer  has the highest cost performance.
Chinese Academy of Sciences in 2003, according to news news March 14, 2003 through the Institute of Physics, Wang Duo, research and development team for their efforts, the first time a large area excimer laser energy for the direct measurement of the effective measuring diameter 100mm, in pyroelectric detector the size of the laser for the world. Following discussions with the China Institute of Atomic Energy and the relevant experts at the national laboratory tests showed that this system in different energy regions (10-20J and 100-200mJ) have reached the desired specifications. According to reports, the laser fusion research is a promising energy development issues, laser controlled thermonuclear fusion reaction is bound to bring a new twist to human life. Laser fusion research in the military also has an important significance. In laser fusion experiments, especially in the indirect driven fusion research, in order to produce strong radiation-driven market, people are seeking a high X-ray conversion efficiency, good radiation transport environment, the best of the radiation-driven field. In the course of these studies, the energy of the excimer laser for direct monitoring and research is very important. The study results showed that the project's research and development in addition to the strength of the products have been developed and constantly open up the market, the countries are developing applications for the needs of the project also has the commitment and development capabilities. This kind of 100mW laser pointer is the most convenient for use.
Laser glass is a glass matrix of solid-state laser materials. It is widely used in various types of optical devices in solid-state laser and a high power and high-energy lasers main laser material. Glass and glass substrates by the laser ion activation of two parts. Various physical and chemical properties of laser glass mainly determined by the matrix glass, and its spectral properties are mainly determined by the activation of ions. However, activation of matrix glass and the interaction between ions, so the laser active ions on the physical and chemical properties of the glass to a certain extent, and the glass substrate of the spectroscopic properties of its sometimes very important. Modern society, an increasingly important role of information, who controls the information more quickly, more accurately, the more rich, who will be more to take the initiative, will have more chance of success. This kind ofgreen laser pointeradopts the special advanced technology approach according to requirements of the market. Laser led to the emergence of an information revolution, from VCD, DVD disc to the laser illumination, the laser has greatly enhanced the efficiency of use, and easy for people to save and retrieve information, "laser revolution" significance. Space and time controlled laser controlled well, the object of processing the material, shape, size and processing environment of freedom are large, especially for automated processing, laser processing systems and computer numerical control technology may constitute a highly efficient automated processing equipment, has become the key enterprises in-time production techniques for high-quality, efficient and low-cost processing has opened up broad prospects. Currently, laser technology has been integrated into our daily lives, and in the coming years, the laser will give us more of a miracle. Blue Laser Pointer  equips with the imported chips.
Laser light source is a new and modern, with good direction, high brightness, good color and other characteristics are widely used, such as laser ranging, laser drilling and cutting, earthquake monitoring, laser surgery, laser singing top. Ablation laser weapons have unique effects, shock effects and radiation effects, has been widely used in air defense, anti-tank, bombers, etc., and has shown its magic power. There are two of China's laser industry leader, south Han's Laser, north G subjects (600 986), it is interesting that two laser shares outstanding, were only 5468 shares and 4953 shares, is a mini, but G and Kodak's share price is not a fraction of Han's Laser, investors have a strong potential for the outbreak. G is the main subjects of laser electronic products, companies and foreign co-production with international advanced technical level of the laser head and associated electronics, the company installed to run 24 production lines, more than three types of aircraft models of laser products, can be In a variety of laser processing head 48 million, to become China's largest production base of the laser head, and the line of the "Han's Laser" Heroes Kingdoms. G owned subsidiary of Kodak Laser Electronics Co., Ltd. Dongying Branch Britain, its business scope is production and sales of electronic laser head, movement and related products, the leading laser products are widely used in digital decoding computers, DVD players, game consoles and other high-tech electronic the product. 5mW laser pointer has good working stability.
Current customers include LG Electronics, Asustek Computer, Lite-On and other leading IT vendors, the laser head and its family of products embody the optics, electronics, precision machinery, micro, new materials, micro-machining and other high-tech essence, the first end of today crystallization technology, very broad application prospects, the company's expected future growth of laser industry. Laser speed is twice the measured object has a specific time interval of the laser rangefinder, made in the one period of the measured object distance, resulting in the measured object's speed. Therefore, the laser gun has the following characteristics: As basic as the rays of the laser beam, relative to the estimated speed from the radar effective distance can be measured outside the 1000M; speed, high precision, error <1 km. People can enjoy fastness and convenience brought by high technology includinggreen laser pointer.

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2.12.2011 - Feedback of Customer of green laser pointer

green laser pointer suitable to the condition of our country. The original Chinese name of laser called "Laser", "les" is its English transliteration of the name LASER is taken from the English Light Amplification by Stimulated Emission of Radiation the first letter of each word consisting of abbreviations. Means "to expand by stimulated emission of light." Laser has been completely full name in English to express the main process of manufacturing the laser. 1964, in accordance with the well-known scientist Qian proposed that "stimulated emission of light" was renamed "laser." Laser since the 20th century, following the atomic energy, computers, semiconductors, the human and very, very important [1] great invention, known as the "fastest knife," "the most accurate of the foot," "the brightest light" and "strange laser." It's brightness of the sun's 10 billion times. Its principle was early in 1916 the famous American physicist Albert Einstein discovered, but until 1960 was only the first successful laser manufacturing. Laser is in a theoretical preparation and production practices in the context of the urgent need emerged, and it come out, you get extraordinary fast development, the development of not only the old laser optical science and optical technology gained a new life, and lead to the emergence of a new industry. 200mW Laser Pointer has the function of quick starting.
Laser allows people to effectively use advanced methods and means unprecedented, unparalleled benefits and to get results, so as to promote the development of productivity. The project Huazhong University of Science and National Laboratory for Optoelectronics, Wuhan East Lake Wuhan Optics Valley of China to be fully reflected, also play a major role in the military. The interaction between light and matter, the material is essentially composed of microscopic particles or photons absorbed, while the situation to change their exercise performance. Micro-particles have a specific set of energy levels (usually is a separation of these levels). Particles at any one time only with a level corresponding to the state (or simply stated as at a certain level on). Interaction with the photon, the particle transition from one energy level to another level, and the corresponding photon absorption or emission. Photon energy values for this two-level energy difference △ E, frequency = △ E / h (h is Planck's constant). At a low level of particles by the external excitation (that is, particles with other energy exchange occurred in the interaction, such as inelastic collisions with the photons), absorbed energy, and this transition to higher energy corresponding to level. This transition is called stimulated absorption. Particles are excited to enter the high-energy state, not the steady-state particle, the particle can be accepted if there is a lower level, even if there is no external effect, the particle has some probability of spontaneously from the high energy level (E2) to the low level ( E1) transition, while radiating energy (E2-E1) photon, the photon frequency = (E2-E1) / h. 100mW laser pointer has no radiation towards the human body.
This process is called spontaneous emission of radiation. Number of atoms spontaneous emission light emitted, does not have the phase, polarization, propagation direction of the line is physically called non-coherent light. 1917 Einstein's theory that: In addition to the spontaneous radiation, high energy level E2 is on the way the particles can also be another transition to a lower level. He pointed out that when the frequency is = (E2-E1) / h of the incident photons, the particles will lead to a certain probability, the rapid transition from level to level E2 E1, while an external photon radiation frequency, phase, polarization the same state and the photon propagation direction, a process called stimulated emission. Can imagine, if a large number of atoms in a high energy level E2, when there is a frequency = (E2-E1) / h of the incident photons, thus stimulating E2 on the stimulated emission of atoms, photons get exactly the same two features, which two-photon excitation E2 level on another atom, but also to produce stimulated emission, obtained the same four characteristics of the photon, which means that the original optical signal to be amplified. This in the stimulated emission was generated in the process is the laser light amplification. This unique design make Blue Laser Pointer very special. 1917 Einstein proposed stimulated emission, the laser has come out in 1960, separated by 43 years, why? The main reason is, ordinary light is produced by stimulated emission of particles in a very small probability. When the frequency of light launched into the work of certain substances, stimulated emission and stimulated absorption of two processes exist, the number of photons by stimulated emission of radiation to increase the number of stimulated photon absorption while filling decreases. Substances in thermal equilibrium, the particle distribution on each level, follow the equilibrium statistical distribution of particles under the law. By statistical distribution of the lower energy level E1 in the number of particles at the higher level must be greater than the number of particles of E2. This light passes through the working substance, the light energy will weaken not strengthen. Here is the technical characteristic of 5mW laser pointer.

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30.11.2011 - 10 habit&#65292;You no longer difficult to lose weight

30.11.2011 - “Six erroneous zones” of meizitang for losing weight

Every day the movement had big do, control the appetite. But why not come down or thin? See if you entered the following six lose weight the erroneous zone. As long as the correct understanding of these common errors, lose weight to more effective.

Error: beer yeast can reduce weight beer yeast powder is fermented beer after by-products, to want to pass commonly filter to remove impurities, clean, and the process technology to get relatively pure beer yeast powder. And instant yeast powder is through the fermentation especially for training and after modern biological technology processing can be directly as a nutritional supplements mushroom and meizitang in the process of cultivation of ingredients to the composition of strengthens nutrition, more balanced and reasonable nutrition. From feeling view beer yeast powder color slants deep, and differ depth, taste bitter, slightly sour; Instant yeast powder color golden yellow or weak yellow, with yeast flavor characteristics, no peculiar smell or smell. Therefore, instant yeast powder whether purity, nutritional value or taste all beer yeast powder and has essential difference. In effect reducing weight, nature is instant yeast powder *, the survey data in reducing weight also can fully prove it.

Myth: don’t eat only food can reduce weight quite wrong, this is the most common fallacy, although a bowl of rice with three two meat calories, but three two meat contain 15 grams of fat, but instead of rice almost no fat. And botanical slimming soft gel  in cooking meat will mostly use oil, so three two of 15 g of fat meat, are mainly rice starch, can be broken down into sugar, provide the energy for the body, is easier to use than meat. As for someone pointed out that in the same meal to eat and meat in not at the same time, it can effectively reduce weight. This is also a wrong idea. Nutritionists think this argument, just outside manufacturing gimmick, no actual theory, basically no matter eat meat for lunch or dinner net for dinner, meizitang eventually absorbed in a day of carbohydrates and protein is the same, so there is no need to limit myself to each meal diet.

Myth: the vegetables as staple food vegetables quantity of heat low when reducing weight of rice and meat can replace, and full and not afraid fat wrong! A lot of people with vegetables meal or vegetable soup in weight loss when the main food does not think fat and can be eaten. But nutritionists say that is a very unhealthy law reducing weight, even if vegetables quantity of heat low, but much food. Not only can let the nutrition is out of balance, will lead to more appetite change, and change once appetite, it is hard to restore, Meizitang  after that day in order to stop the vegetables, very easy to feel hungry, and then found another food instead of, eventually lead to weight picks up, so nutritionists think reduce weight, the heaviest if control appetite, and not with other low cholesterol food instead.

Myth: quit smoking will be fat wrong! Many people think that cigarette of tar and nicotine help fast combustion heat, so once quit smoking will get fat, but in fact it is the mental function, and ordinary people in smoking cessation so after fat, is due to attract a taste is sensitive to decrease, relatively less interest on food. But after quitting and smell will return to normal appetite, from the food interest, appetite is better, plus custom question, long time smoke in hand, once the no smoking, very natural will get a snack instead of, botanical slimming will naturally get fat, so if you quit smoking addiction in new hard, can chew gum, can satisfy the mouth addiction.

Myth: drink vinegar and eat grapefruit help in reducing a lot of fat people are all under the illusion that grapefruit and vinegar sour taste has disappear fat effect, but until now still not enough study confirmed that, on the contrary, nutritionists, points out that excessive consumption can make gastric ministry unwell, especially vinegar, don’t mess try, and a grapefruit including 80 cholesterol and equivalent to the third part bowl of rice, eat more will fat.

Error 6: Does exercise can effectively reduce weight wrong! In fact sports consumption quantity of heat is limited, meizitang such as swimming, per hour per kilogram of body weight can use up only 10 kcal, relative to eat less a piece of fat meat, more than an hour exercise effect.

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