Green lasers
Posted on: Wednesday, October 28th, 2009 at 4:00 pm
Lasers which lie in the region of green spectrum with the wavelength of 510-570 nanometers are called as green lasers. This technology is used in laser projection displays, laser pointers, to pump solid-state lasers like Ti-sapphire lasers and interferometers. Green lasers can also be used for processing different kinds of materials like copper, silicon and gold, because of their higher absorption co-efficient than near-infrared lasers.
Some of the most common green lasers are Argon-ion lasers and Erbium-doped up-conversion lasers. Argon-ion lasers are created by amplifying light in the argon plasma formed with electrical discharge while Erbium-doped up-conversion laser is based on erbium-doped bulk crystals or fibers that are able to emit 550 nanometer laser beam. The researchers and scientists are also working on several projects that aim at development of a mechanism which will allow the transmission of electric data through green lasers. This kind of mechanism, if it is developed successfully at affordable costs, will drastically change the ways in which people communicate with one another.