Visible Laser

A laser is a visible with a laser beam that can be seen with the naked eye. Visible lasers are quite rare, most lasers emit light in the invisible infrared spectrum. The laser beams that are usually invisible can be made visible through smoke and dust but there are certain types of lasers that produce beams actually seen with the naked eye, even traveling through the air clear. There are different types of visible lasers, such as laser diodes and laser gas.

The word laser is actually an acronym for "light amplification by stimulated emission of radiation. Through a process called stimulated emission, lasers release light or electromagnetic radiation. Mainly an electron promoted and moves to an area of low energy. The energy lost in the form of a photon, a unit of electromagnetic radiation, emitted in the form of a laser beam. In a visible laser, the emitted light at wavelengths in the visible spectrum, in contrast with most lasers, which release energy in the invisible infrared spectrum.

A visible laser is based on the type of material used in construction. The diode laser, which corresponds to a simple light emitting diode, or LED, will develop a visible laser. A pair of visible laser diodes can release the beams. Some work-electron lasers exciting in different materials such as titanium and gallium nitride are also able to release the beams.

Gas lasers are often used to produce laser beams visible. In a gas laser, is an electric current through a gas, the stimulation of electrons from atoms of gas to go down to lower levels of energy and photons, or light. The first laser was carried out with the gases helium and neon. Helium-neon laser, lasers henee also known as laser producing visible in the red part of the visible spectrum.

How lasers invisible and often greater extent, the damage visible to the eye lasers. In a matter of seconds or less, causing a small laser spot, sustained burns of the cornea or lens of the eye. This also applies when the beam makes contact with one eye then was followed by a reflective surface. Some scientific and industrial lasers are powerful enough to even burn the skin, and even traces of light from these lasers can cause permanent eye damage. Because of this risk, special glasses that absorb certain wavelengths can be used to protect the eyes.