Disassembly Process Show of green laser pointer

The leaders are discussing the quality of green laser pointer . Light into plane waves, spherical waves and Gaussian wave, plane wave and spherical wave which is done in order to study the idealized model, the actual transmission could not exist. In the actual transmission, the light beam is Gaussian, but no matter what kind of light it receives all fields can be expressed as [1]: where U0 propagation in vacuum amplitude term is logarithmic amplitude fluctuations, in vacuum propagation when the phase term, is a first-order phase fluctuations. The Gaussian beam and plane wave, spherical wave and have different transmission characteristics, its transmission in free space to meet the Helmholtz equation: Gaussian beam thus can be deduced at any point of light in space field strength: the atmosphere, also known as laser communications wireless optical communication, it is light as the carrier, in the atmosphere transmission of information communication technology. As the air channel is random, the laser channel in the transmission through the atmosphere will have effects and atmospheric attenuation effects of atmospheric turbulence, resulting in the bending beam, blinking, drift, expansion, distortion and light loss and so on. Therefore, to study the atmospheric channel effects and atmospheric turbulence, atmospheric attenuation effects for improving the performance of wireless optical communication systems is important. The quality audit summary meeting of green laser pointer will be held next morning.
When the laser propagation in the atmosphere, due to the existence of a variety of atmospheric gas molecules and particles such as dust, smoke and wind, rain, snow and other weather phenomena that part of the energy due to scattering from the original propagation direction (ie, radiation redistribution of energy in space), part of the radiation energy is absorbed and transformed into other forms of energy (such as heat, etc.). The absorption of atmospheric molecules is converted into radiation energy of molecular motion in atmospheric composition. Attenuation and energy absorption is closely related to the wavelength of the laser beam in the visible band and 1.06μm wavelength, the absorption of atmospheric molecules can be ignored, but the 10.6μm wavelengths, the atmosphere molecular absorption most affected. Atmospheric window is 0.72 ~ 15μm, but this is only a rough statement. The absorption of atmospheric molecules with altitude, since the closer to the ground (several kilometers), the greater the concentration of water vapor, water vapor absorption of energy is also greater. The haze of aerosol particle size distribution range is generally between 0.01 and wavelength changes in the relationship, does not reflect the atmospheric environment, atmospheric particle size distribution, particle composition changes in refractive index caused by changes in other factors, these parameters are more accurate measurement can directly affect the accuracy of calculation, and calculations based on Mie scattering theory are taken into account these factors. Some more appendixes of  green laser pointer will be signed in the design liaison meeting of green laser pointer .