laser pointer pen has the side application range

1960: California, USA Hughes Laboratory Theodore Maiman achieved the first laser beam. 1961: Laser surgery for the first time in the retina to kill the tumor. 1962: invention of semiconductor diode lasers, which is the backbone of today’s small commercial lasers. 1969: Laser remote sensing survey for the laser was fired at the Apollo 11 reflector on the lunar surface, measured in Earth-Moon distance error within a few meters. 1971: Laser into the art world, for stage lighting effects, and laser holographic camera. Hungarian-born British-born physicist Dennis Gabor holographic camera with the study of the Nobel Prize. 1974: The first supermarket bar code scanner appears. 1975: IBM launch the first commercial laser printer machine. 1978: Philips to create the first laser disc (LD) player, but the price is high. 1982: The first compact disc (CD) player there, the first CD set is an American singer Billy Joel’s 1978 album 52nd Street. 1983: President Reagan issued a “Star Wars” speech, painted a space-based laser weapons. green laser pointeradopts reliable information protection technology and electronic devices of high performance. 1988: North America and Europe, set up between the first optical fiber, light pulses to transmit data. 1990: The laser used in the manufacturing industry, including integrated circuits and automobile manufacturing. 1991: the first laser treatment of myopia, the first Gulf War with a laser-guided missiles. 1996: Toshiba digital versatile disc (DVD) player. 2008: France guide widely used by scientists outside the nerve fiber laser and minimally invasive surgical treatment of a brain tumor. 2010: The U.S. National Nuclear Security Administration (NNSA) said that by using the 192 laser beams to materials bound fusion reaction, hydrogen isotopes deuterium (mass number 2) and tritium (mass 3), to solve the fusion of a The key difficulty. laser pointer pen has the side application range.
Resulting in stimulated emission, the release characteristics of a laser photon from the laser resonator cavity mirror reflection through the laser hole and hole focusing mirror, the laser beam injection. Generated from the laser can be seen, only a laser beam includes a main wavelength of light, it is monochromatic. Each light is transmitted along one direction, combined with the superposition of the way, we call “coherence.”
This feature allows the laser to a very fine beam shines on a target, but almost no scattering. And each chamber a laser beam shot out like bullets, each bullet only hit the target on a hole. If you want to play a “one”, we should shoot a lot of bullets, along the “one” direction of the play a lot of holes to form a “one” point of the horizontal arrangement, which is what we call the “dot-matrix array,” is behind the talk about “raster image” of the technology base. Graphic information on laser printers, dot matrix is formed by the. The higher the print quality requirements, form a lattice has more character.