There is no need to arrange the control circuit for green laser pointer

Phenomenon of intentionally damaging green laser pointer should be prevented.
Medical cosmetic laser cosmetic make a big step forward, and give medical cosmetic update the content. Laser cooling (laser cooling) the interaction of atoms with laser and slow atomic motion in order to obtain high-tech ultra-low temperature atomic. The main purpose of the early important technology is to accurately measure the various atomic parameters for high-resolution ultra-high-precision laser spectroscopy and quantum frequency standards (atomic clocks), but later became achieve atomic Bose - Einstein condensation of the key experimental methods. Although the early 20th century, people have noticed the light on the role of atoms with radiation pressure, but after the invention of the laser, before developing the use of light pressure to change the speed of atomic technology. It was found that when the atoms in the atomic transition frequency is slightly lower than the energy gap and a pair of opposite laser beam propagation in the movement, due to the Doppler effect, atomic absorption and atomic motion tends to the opposite direction of the photon, while the direction of the road with the same less likely to absorb photons; absorption of photons to be isotropic spontaneous emission. It seems equally, the net effect of two laser beams is to produce an atomic motion in the opposite direction of the damping force, so that the slow movement of atoms (ie, cool). In 1985 the U.S. National Institute of Standards and Technology Phillips (willam D. Phillips), and Steven Chu of Stanford University (Steven Chu) first achieved atomic laser cooling experiments, and has been very low temperature (24μK) of sodium atomic gases. They further with the formation of three-dimensional magneto-optical laser beam about the atomic imprisoned in a small area of space to be cooled, to obtain a lower temperature of the "optical adhesive." The process of artificially shutting off green laser pointer should be traced and checked. Transmitters of various forms of lasers, such as carbon dioxide lasers, neodymium-doped yttrium aluminum garnet lasers, semiconductor lasers and wavelength tunable solid-state lasers, etc.; antenna is an optical telescope; receiver using various forms of optical detectors, such as photoelectric photomultiplier tube, semiconductor photodiodes, avalanche photodiodes, infrared and visible multi-detector parts. Laser radar using pulsed or continuous wave two kinds of work, the direct detection method of detection and sub-heterodyne detection. The use of laser weapons is a directional laser beam emission target or direct damage to the failure of directed energy weapons. According to operational use of different laser weapons can be divided into tactical and strategic laser weapons, laser weapons into two categories. Weapon system consists of lasers and tracking, aiming and firing devices, components, lasers are now commonly used chemical lasers, solid-state lasers, CO2 lasers. There is no need to arrange the control circuit for green laser pointer.