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Title: Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium

Abstract

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.

Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
6953887
Patent Number(s):
4140978
Application Number:
PPN: US 5-792280
Assignee:
Dept. of Energy, Washington, DC (United States)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Patent File Date: 29 Apr 1977
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; GAS LASERS; DESIGN; CARBON DIOXIDE LASERS; LASER MATERIALS; MULTI-PHOTON PROCESSES; OPTICAL PUMPING; STARK EFFECT; LASERS; MATERIALS; PUMPING; 426002* - Engineering- Lasers & Masers- (1990-)

Citation Formats

Bischel, W K, Jacobs, R R, Prosnitz, D P, Rhodes, C K, and Kelly, P J. Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium. United States: N. p., 1979. Web.
Bischel, W K, Jacobs, R R, Prosnitz, D P, Rhodes, C K, & Kelly, P J. Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium. United States.
Bischel, W K, Jacobs, R R, Prosnitz, D P, Rhodes, C K, and Kelly, P J. Tue . "Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium". United States.
@article{osti_6953887,
title = {Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium},
author = {Bischel, W K and Jacobs, R R and Prosnitz, D P and Rhodes, C K and Kelly, P J},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {2}
}