From WikiLectures

< Laser

Types of laser:

Gas lasers[edit | edit source]

Helium-Neon Laser[edit | edit source]

Holography, spectroscopy, presentation (pointers), barcode scanning

Argon laser[edit | edit source]

Used for coagulation, i.e. surgery. Ophthalmitic surgery, confocal microscopy, retinal phototherapy for diabetes

CO2 laser[edit | edit source]

Used to excise tissue. Ophthalmitic surgery. Cutting and welding material.

Chemical lasers[edit | edit source]

Hydrogen fluoride laser, deuterium fluoride laser. Used in scientific research, weaponry. They are usually much more powerful than gas lasers (can reach mega watt values)

Dye lasers[edit | edit source]

Dyes such as rhodamine, coumarin. They are used in medicine, spectroscopy, research.

Metal-vapor lasers[edit | edit source]

Copper vapor laser is used in dermatology and high-speed photography.

Solid-state lasers[edit | edit source]

Ruby laser is used in holography, tattoo removal. It was the first visible-light laser invented (1960).

Semiconductor lasers[edit | edit source]

Aluminium gallium indium phosphide (AlGaInP) laser is used for reading compact discs.