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Title: Stokes injected Raman capillary waveguide amplifier

Abstract

A device for producing stimulated Raman scattering of CO.sub.2 laser radiation by rotational states in a diatomic molecular gas utilizing a Stokes injection signal. The system utilizes a cryogenically cooled waveguide for extending focal interaction length. The waveguide, in conjunction with the Stokes injection signal, reduces required power density of the CO.sub.2 radiation below the breakdown threshold for the diatomic molecular gas. A Fresnel rhomb is employed to circularly polarize the Stokes injection signal and CO.sub.2 laser radiation in opposite circular directions. The device can be employed either as a regenerative oscillator utilizing optical cavity mirrors or as a single pass amplifier. Additionally, a plurality of Raman gain cells can be staged to increase output power magnitude. Also, in the regenerative oscillator embodiment, the Raman gain cell cavity length and CO.sub.2 cavity length can be matched to provide synchronism between mode locked CO.sub.2 pulses and pulses produced within the Raman gain cell.

Inventors:
 [1]
  1. Santa Fe, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
863651
Patent Number(s):
4222011
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
stokes; injected; raman; capillary; waveguide; amplifier; device; producing; stimulated; scattering; laser; radiation; rotational; diatomic; molecular; gas; utilizing; injection; signal; utilizes; cryogenically; cooled; extending; focal; interaction; length; conjunction; reduces; required; power; density; below; breakdown; threshold; fresnel; rhomb; employed; circularly; polarize; opposite; circular; directions; regenerative; oscillator; optical; cavity; mirrors; single; pass; additionally; plurality; cells; staged; increase; output; magnitude; embodiment; cell; matched; provide; synchronism; mode; locked; pulses; produced; pulses produced; raman capillary; stimulated raman; cryogenically cooled; molecular gas; cell cavity; waveguide amplifier; raman scattering; optical cavity; laser radiation; power density; output power; capillary waveguide; cavity length; single pass; stokes injected; injection signal; diatomic molecular; cavity mirror; utilizing optical; injected raman; interaction length; circularly polarize; pass amplifier; capillary wave; /330/359/

Citation Formats

Kurnit, Norman A. Stokes injected Raman capillary waveguide amplifier. United States: N. p., 1980. Web.
Kurnit, Norman A. Stokes injected Raman capillary waveguide amplifier. United States.
Kurnit, Norman A. Tue . "Stokes injected Raman capillary waveguide amplifier". United States. https://www.osti.gov/servlets/purl/863651.
@article{osti_863651,
title = {Stokes injected Raman capillary waveguide amplifier},
author = {Kurnit, Norman A},
abstractNote = {A device for producing stimulated Raman scattering of CO.sub.2 laser radiation by rotational states in a diatomic molecular gas utilizing a Stokes injection signal. The system utilizes a cryogenically cooled waveguide for extending focal interaction length. The waveguide, in conjunction with the Stokes injection signal, reduces required power density of the CO.sub.2 radiation below the breakdown threshold for the diatomic molecular gas. A Fresnel rhomb is employed to circularly polarize the Stokes injection signal and CO.sub.2 laser radiation in opposite circular directions. The device can be employed either as a regenerative oscillator utilizing optical cavity mirrors or as a single pass amplifier. Additionally, a plurality of Raman gain cells can be staged to increase output power magnitude. Also, in the regenerative oscillator embodiment, the Raman gain cell cavity length and CO.sub.2 cavity length can be matched to provide synchronism between mode locked CO.sub.2 pulses and pulses produced within the Raman gain cell.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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