A gas laser is a laser in which an electric current is discharged through a gas to produce light. The first gas laser, the Helium-neon, was co-invented by Iranian physicist Ali Javan and American physicist William R. Bennett, Jr. in 1960.

Advantages

• High volume of active material
• Active material is relatively inexpensive
• Almost impossible to damage the active material
• Heat can be removed quickly from the cavity

Types of gas laser

• Helium-neon laser
• Nitrogen laser
• Carbon dioxide laser
• Ion laser
• Gas dynamic laser

See also

• List of laser types

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