Laser action by optically depumping lower states

Details Laser action by optically depumping lower states Laser action by optically depumping lower states

1975-11-26

1977-01-18

Webster, Robert J.

Oscillators

Molecular or particle resonant type

331 945G, 330 43, H01S 309, H01S 322

Patent

active

040042502

ABSTRACT:
A method and apparatus for obtaining laser action between an upper energy level and a lower energy level of a gaseous medium, which comprises populating the upper energy level to some degree (short of achieving a conventional inverted population) by any suitable pumping means, and thereafter establishing an inverted population by transiently and selectively depumping the lower energy level such as by exposing the medium to an intense source of radiation which selectively causes the transformation of the lower energy level species to some other energy level. Thus, a thermally pumped/optically depumped gas laser system is produced.

REFERENCES:
patent: 3333101 (1967-07-01), Bell
patent: 3588740 (1971-06-01), Bell

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