The specification of laser pointer pen has to meet requirements of the customer

Laser ranging. Laser as the distance light source, because the direction is good, power, great distances can be measured, and high precision. Laser communications. In the communications field, a column with a laser optical signal transmission cable can carry the equivalent of 20 000 the amount of information carried by copper wire telephone. Application of controlled nuclear fusion in the air. The laser hitting the deuterium and tritium mixture, the laser had brought them great energy, resulting in high pressure and high temperature promote aggregation of two kinds of helium nuclei and neutrons, and also emit enormous radiation energy. As the laser energy can be controlled, so the process is known as controlled nuclear fusion. The specification of    laser pointer pen     has to meet requirements of the customer.
In the future, with further human laser technology research and development, will further improve laser performance, the cost will be further reduced, but it will continue to expand the scope of application is, and will play an increasingly significant role. In gas lasers, the most common is helium-neon laser. The world's first helium-neon laser is the second shortly after the first ruby laser in 1960, Bell Laboratories in the United States by the Iranian physicist Jia Wan made. As the helium-neon laser emits monochromatic beam direction and good, can work, so this laser is the most used lasers today mainly used in the holographic precision measurement, collimator positioning. The specification of    green laser pointer   contains the following items.
Gas lasers is another typical argon ion laser. It can send bright blue-green shade, continuous work, the output power of 100 watts. Such lasers in the visible region is the highest output power of a laser. Because of its blue-green laser is emitted, so the most used on the eye, blue-green because the human eye's response is very sensitive to the retinal heme, lutein can absorb green light. Thus, argon ion laser eye surgery, can rapidly form a local heating, the protein into a gel state of the retina, which is the ideal light source for welding the retina. Argon ion laser emits blue-green laser can deep sea floor, without being absorbed by seawater, which can be used underwater survey operations.  50mW blue violet laser pointer   is of the mini size.
Also known as liquid laser dye laser, because the activation of these lasers is that some organic dye material dissolved in ethanol, methanol or water and other liquids in the form of the solution. In order to stimulate them to emit a laser, commonly used for high-speed flash laser source, or by other laser emits very short pulses of light. For liquid laser emits laser spectroscopy, laser chemistry and other scientific research, is of great significance. Gas laser is a chemical reaction chemical laser to generate laser. Fluorine atoms and hydrogen atoms, such as chemical reactions, can generate hydrogen fluoride molecules in the excited state. Thus, when the two gases mix quickly to be able to produce the laser, so no other energy can be obtained directly from the chemical reaction is very strong light.    100mW green laser pointer     is tiny in size with key ring.
These lasers are more suitable for field work, or for military purposes, it is fear of death ray weapon is a result of application of chemical lasers. In today's lasers, and some are made with the semiconductor. They are small, long life, motivation is simple (usually electrical stimulation), low threshold current, easy-to-scale production, the early output of the laser semiconductor laser coherence, direction and other poor performance, the more types of output laser frequency less, mostly in the infrared region, but now with further research and expansion of semiconductor materials and structures. The package requirement of    200mW green Laser Pointer   is not that high.
related green laser pointer blog:
laser pointer pen