a single wave of light or beam of photons

devices generating visible or invisible light, based on stimulated emission of light

Laser is a device which emits a powerful and localised beam of light.

An optical source that emits Photons in a coherent beam. Light Amplification by Stimulated Emission of Radiation (LASER) is brought about using devices that transform Light of varying frequencies into [..]

Gas Lasers with excited dimers (i.e., excimers) as the active medium. The most commonly used are rare gas monohalides (e.g., Argon Fluoride, Xenon chloride). Their principal emission wavelengths are i [..]

Lasers in which a gas lasing medium is stimulated to emit Light by an electric current or high-frequency oscillator.

Lasers with a Semiconductor diode as the active medium. Diode Lasers transform electric energy to Light using the same principle as a Light-emitting diode (LED), but with internal reflection capabilit [..]

Lasers which use a solid, as opposed to a liquid or gas, as the lasing medium. Common materials used are crystals, such as YAG (Yttrium Aluminum garnet); alexandrite; and CORUNDUM, doped with a rare e [..]

Tunable liquid Lasers with organic compounds (i.e., dye) which have a strong Absorption band, used as the active medium. During emission, the dye has to be optically excited by another Light source (e [..]

Light Amplification by Stimulated Emission of Radiation. This phenomenon is brought about using devices that transform light of varying frequencies into a single intense, nearly nondivergent beam of m [..]

lasers are effectively used to treat many conditions. They are used to remove unwanted facial or body hair, fine lines and wrinkles, hyperpigmentation, as well as to eliminate surface blood vessels on [..]