What are the different types of lasers?

There are three types of lasers: solid condition, gas and liquid. While all work according to the same general principles, they are differentiated on the basis of the media they use to create laser action. Related to higher energy states, which is known as the population inversion, excited electrons rapidly fall back back into lower energy states and release excess energy like photons. Carefully placed mirrors reflect photons that hit them at 90 degrees back and forth, which in turn stimulates other excited electrons to emit photons with the same wavelengths, directions of propagation and polarization; This is a process called reinforcement. Because mirrors are uneven reflectance, photons are eventually able to escape and their output represents a laser action.

The first solid fabrics based on Tate semiconductors were built in 1963. Before and the beginning of the first laser ever built in 1958, lasers were in a firm state -based insulator, usually using a glass or using a glass orCrystal media, such as Ruby, which was drawn by another non-laser light source to achieve population inversion. As the technology evolved, the lasers were used to draw other lasers. Fixed lasers have a number of medical and industrial applications.

gas lasers first appeared in 1960. Initially, they used a mixture of helium and neon as their medium, with carbon dioxide coming later. In both cases, the high voltage creates a high -frequency electrical current electrical discharge in the tube containing gas, leading to the inversion of the population . Gas lasers can also use more powerful and volatile media, such as hydrogen and fluorine - both commonly found in rocket fuel - where combustiongasses act as a pump. Gas lasers are generally the strongest lasers and often mention in connection with quixotic military applications, aka, "Death Rays."

liquid laserY use colored compounds transmitted by solvent, which are then pumped through other light sources to a point where electrons occupy higher energy levels. A wide range of materials, including copper, chromium, dyes, metal salts or even jello, can be used. With the controlled flow of fluid through the pump, liquid lasers are easier to stabilize than other types of lasers, so they are useful in the separation of isotopes, measurement and the production of integrated circuits.