gas laser 
Types of gas laser
Carbon dioxide lasers
Carbon monoxide lasers 
Helium–neon (HeNe) lasers 
Nitrogen lasers 
TEA lasers
Chemical lasers
Excimer lasers
Ion lasers
Metal-vapor lasers
Advantages:
Applications
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Category: physicsphysics

Gas laser

1. gas laser 

2.

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

3. 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

4. Carbon dioxide lasers

5. Carbon monoxide lasers 

6. Helium–neon (HeNe) lasers 

7. Nitrogen lasers 

8. TEA lasers

9. Chemical lasers

10.

George C. Pimentel

11.

12. Excimer lasers

13. Ion lasers

14. Metal-vapor lasers

15. 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
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