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Iranian-American physicist Ali Javan American physicist William R. Bennett, Jr.

Iranian-American physicist 
Ali Javan

American physicist 
William R. Bennett, Jr.

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Types of gas laser Carbon dioxide lasers, or CO2 lasers Carbon

Types of gas laser

Carbon dioxide lasers, or CO2 lasers
Carbon monoxide lasers 
Helium–neon (HeNe) lasers 
Nitrogen

lasers 
TEA lasers
Chemical lasers
Excimer lasers
Ion lasers
Metal-vapor lasers
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Carbon dioxide lasers

Carbon dioxide lasers

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Carbon monoxide lasers

Carbon monoxide lasers 

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Helium–neon (HeNe) lasers

Helium–neon (HeNe) lasers 

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Nitrogen lasers

Nitrogen lasers 

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TEA lasers

TEA lasers

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Chemical lasers

Chemical lasers

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George C. Pimentel

George C. Pimentel

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Excimer lasers

Excimer lasers

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Ion lasers

Ion lasers

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Metal-vapor lasers

Metal-vapor lasers

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Advantages: High volume of active material Active material is relatively inexpensive

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