Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium
Method and apparatus are disclosed for producing laser radiation by two-photon optical pumping of an atomic or molecular gaseous medium and subsequent lasing action. A population inversion is created as a result of two-photon absorption of the gaseous species. Stark tuning is utilized, if necessary, in order to tune the two-photon transition into exact resonance. In particular, gaseous ammonia (NH[sub 3]) or methyl fluoride (CH[sub 3]F) is optically pumped by a pair of CO[sub 2] lasers to create a population inversion resulting from simultaneous two-photon excitation of a high-lying vibrational state, and laser radiation is produced by stimulated emission of coherent radiation from the inverted level. 3 figs.
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 4140978; A
- Application Number:
- PPN: US 5-792280
- OSTI ID:
- 6953887
- Resource Relation:
- Patent File Date: 29 Apr 1977
- Country of Publication:
- United States
- Language:
- English
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Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium
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