Green laser pointer is specifically customized

Photon resonant cavity superimposed to a certain amount, it will penetrate the semi-reflective reflector issued a bunch of very strong light, and this is the laser. Issued by the beam is very focused, almost no scattering, as long as we use control technology to control the wavelength of the light in the 700 ~ 900nm (nanometer) to meet, so that the laser laser printer drum exposure. The modern use of semiconductor lasers, usually a laser diode, its principle is very similar to the ordinary diode has a PN junction, when the voltage and current is added to the laser diode, the holes in the P-type semiconductor material and N The free electrons in the material to produce the relative motion.  green laser pointer  is especially used for computer mostly by the business man.
PN junction carrier density increase is very large, free electrons and holes recombine, resulting in stimulated emission, release photons with the laser characteristics, the resonant cavity by the laser reflector, through the laser hole and the hole within the focusing mirror, shot a laser beam. It can be seen from the generation of laser, a laser beam is only one of the main wavelengths of light, it is monochromatic. Each a light propagation in one direction, combined with the superposition of the way, we call "coherence". This feature allows the laser to a very fine beam of light shines on a target, and almost no scattering. Each laser beam is like the barrel of a gun shot bullets, each bullet only in the target play a hole.  green laser pointer  is well received in America and Europe.
If you want to play a "one", it is necessary to shot a lot of bullets, and played a lot of holes along the "a" direction, the formation of a "one" point horizontally, and this is what we call the "dot matrix arrangement. is behind the talk about the technical basis of the raster image. Graphic information on the laser printer, but also by the lattice. The higher the print quality requirements, composed of a character dot matrix more. Laser scanning of the lattice formed in four ways. Single scan line: a line of characters in each line of the lattice information sent to the scanner to scan, called a single line scan. The order of the multi-line deflection scanning: high-frequency signal generator in order to produce nine different frequencies, according to the Bragg diffraction theory. More technical details of green laser pointer  should be determined as soon as possible.
Deflection modulator will produce nine different deflection angle of the scan line, and then turn the mirror to rotate a small angle, scanning the lattice from left to right. This method simply rotating mirror turned at a slight angle, which is equivalent to 1/132 of the single-scan method, to form a word, it is also known as raster scan. The multi-line deflection scanning: in the high-frequency drive circuit to generate nine different frequencies sent by the synthetic deflection modulator. The multi-line deflection multiple scans: this approach with multi-line deflection scanning of the same, but different from the formation of a character. Scanning high dot matrix characters, a complete character is divided into multiple scan is complete. Pageup function of   green laser has been successfully developed.