Health Laser Laser green laser pointer in the beginning

This radiation output of the light received, amplified, and is coherent light, such as the number of photons that transmit direction, frequency, phase, polarization identical. 2 Since then, many laboratories the world have been involved in the development of a fierce competition to see who can successfully build and operate the world's first laser. December 1960, Iranian-born American scientist who Jia Wan rate finally succeeded in creating and running the world's first gas laser - He-Ne laser.The automatic coding technology avoids the mutual interference of adjacent  green laser pointer  users. In 1962, there are three groups of researchers almost simultaneously invented the semiconductor laser. In 1966, scientists have developed into a range of wavelengths can be continuously adjusted in the organic dye laser. In addition, the output energy, high power, and do not rely on the grid of chemical lasers have come out. 3 by the time the popular "electronic center, laser universal" view of the river more than 70 years, developed a 6328AHe-Ne laser; and had infrared receiver devices; carbon dioxide laser scanner; laser gas alarm; laser scalpel; infrared auto-oriented car; laser-breeding; low-power infrared light source research.The emitter of  green laser pointer  is round and smart. Company information 11 laser laser-generated definitions and conditions 1 Definitions Light Amplification by Stimulated Emis sion of Radiation, which means light amplification by stimulated emission of radiation. Visible laser stimulated laser radiation is to produce the first laser to condition 2 laser to produce the conditions for the formation of the laser laser, the material must have a working laser metastable level. This is the second generation laser laser conditions. Laser select the appropriate material to the electronic energy levels in the sub-level than the low-energy electron more than that the formation of inversion, so that stimulated emission than absorption. This is a laser-produced the third condition. Health Laser Laser green laser pointer in the beginning is the spontaneous emission of photons of laser produced raw, chaotic frequency and direction.The body of  green laser pointer  has been sprayed metallic paint on the surface. For frequency simple, centralized direction, there must be a resonant cavity. This is the fourth generation laser laser conditions. Company information 12 laser laser laser category classification: are many types of lasers. Here, the laser will work from the material, incentives, operating mode, the output wavelength range, and several other aspects of classification introduced. ① solid (crystal and glass) lasers; ② gas lasers, they work the material used is a gas, can be further divided into atomic gas lasers, ion gas lasers, molecular gas lasers, excimer gas lasers; ③ liquid laser, a class of organic fluorescent dye solution, and the other is the rare earth ion containing solution of inorganic compounds, including metal ions (such as Nd) particles from the work role, and inorganic compounds, liquid (such as SeOCl) will play the role of matrix; Pull out the receiver of  led flash light and insert it into the USB interface port.④ semiconductor lasers, which semiconductor lasers based on a certain class of substances that produce material for the work of the role of stimulated emission, the principle is certain incentives (power into the optical pump or high-energy electron beam injection), in the semiconductor material of the band or band and between between the impurity levels, by stimulating non-equilibrium carriers and to achieve population inversion, resulting in the role of stimulated emission of light; Company's basic structure information 13 laser 14 laser company name information for the Cartesian coordinate system axis z axis to the center of the cavity as the origin, with the z-axis perpendicular to the laser plane to take the laser to take each other on the x-axis and vertical y-axis.