Some people call green laser pointer wireless pointer

Some people call green laser pointer wireless pointer
Calcium fluoride laser, but this failed to obtain practical two lasers, far less than in 1960 and 1960 failed to obtain practical, far less than 12 in 1960 On the development of the world's fourth laser, on the development of the world's fourth laser, that is, from the United States invented at Bell Labs Jia Fan, Jia Fan by the United States invented at Bell Labs, is still widely used helium-neon laser is currently still widely used helium-neon laser is worth noting that, it is worth noting that our laser field getting started early. Wang Jiang, who in 1961 started also earlier.Pressing the button on the green laser pointer just like pressing the PgUp and PgDn on the keyboard. Wang Jiang, who in 1961 also developed China's first laser ruby laser. devices - ruby laser. ruby laser in 1965, 1965, the first high-power laser devices can produce carbon dioxide laser was born was born. dioxide laser was born. the origin and development of the laser in 1967, the first X-ray laser developed in 1967, the first X-ray lasers developed. developed ¨ 1997 year 1997, the Massachusetts Institute of Technology researchers developed the first atom laser atom laser. the system of first atom laser.green laser pointer applies the wireless connection technology. June 1987, 1012W high-power pulsed laser systems years of high-power pulsed laser systems - SG SG device device, system - SG device, Shanghai Institute of Optics and Fine Mechanics Institute developed success of SG I, SG II, Precision Machinery Research Institute successfully developed. SG, SG, SG SG III laser and its applications because of the creative contribution and has won the Nobel Prize in Physics for a total of 10 scientists Nobel Prize in Physics for Scientists Total bit laser carrier - the basic concepts of atom laser 1 laser stimulated absorption E2 E2 basic concepts hv21 E1 E1 E1 at the atomic level, Users don’t have to point thegreen laser pointer to the receiver for it applies the wireless connection technology.the frequency ν of the radiation field effects (shock at the level atoms, the radiation field in the frequency of the role (the role of the radiation field absorbed a photon energy hv of the photon to the animation to E Reed), the absorption of a photon energy of the transition to the 2 2, the spontaneous emission E2 E2 hv21 E1 E1 at the atomic level E2 to E1 transition spontaneous, and can transmit at a level to the atomic spontaneous transitions, animation, the amount of volume for the photon hv the photon 3 E2 E2 by stimulated emission of laser animation form 2hv2 hv21 E1 E1 as produced by stimulated emission of photons with the external transition photons have the same characteristics: same phase; the photon has the same characteristics: same phase; polarization in the same direction; spread in the same direction, while the self-polarization in the same direction; spread in the same direction. made of radiation photons do not have these features. hair radiation photons do not have these features.green laser pointer is power supplied only by one 12V battery. LASER: Light Amplification by Stimulated Emission of Radiation 4. population inversion and laser generation of the basic concepts of laser is easy to imagine, it is easy to imagine, if at a higher energy level is greater than the number of atoms in a low-level atoms to teach, then the incident photons with the atoms in the material after time, after the material containing the atoms, due to stimulated emission and the produce will be greater than the number of photons due to stimulated absorption and annihilation of the photon number.