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

Abstract

Method and apparatus 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.

Inventors:
 [1];  [2];  [3];  [4];  [5]
  1. Menlo Park, CA
  2. Livermore, CA
  3. Hamden, CT
  4. Palo Alto, CA
  5. Fort Lewis, WA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
863293
Patent Number(s):
4,140,978
Assignee:
Dept. of Energy, Washington, DC (United States) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; method; apparatus; producing; laser; radiation; following; two-photon; excitation; gaseous; medium; optical; pumping; atomic; molecular; subsequent; lasing; action; population; inversion; created; result; absorption; species; stark; tuning; utilized; tune; transition; exact; resonance; particular; ammonia; nh; methyl; fluoride; optically; pumped; pair; lasers; create; resulting; simultaneous; high-lying; vibrational; produced; stimulated; emission; coherent; inverted; level; two-photon excitation; lasing action; photon absorption; optical pump; simultaneous two-photon; coherent radiation; molecular gas; optical pumping; laser radiation; gaseous medium; stimulated emission; population inversion; optically pumped; gaseous ammonia; producing laser; optically pump; /372/

Citation Formats

Bischel, William K., Jacobs, Ralph R., Prosnitz, Donald, Rhodes, Charles K., and Kelly, Patrick J. Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium. United States: N. p., 1979. Web.
Bischel, William K., Jacobs, Ralph R., Prosnitz, Donald, Rhodes, Charles K., & Kelly, Patrick J. Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium. United States.
Bischel, William K., Jacobs, Ralph R., Prosnitz, Donald, Rhodes, Charles K., and Kelly, Patrick J. Tue . "Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium". United States. https://www.osti.gov/servlets/purl/863293.
@article{osti_863293,
title = {Method and apparatus for producing laser radiation following two-photon excitation of a gaseous medium},
author = {Bischel, William K. and Jacobs, Ralph R. and Prosnitz, Donald and Rhodes, Charles K. and Kelly, Patrick J.},
abstractNote = {Method and apparatus 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {2}
}

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