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Title: Shifting of infrared radiation using rotational raman resonances in diatomic molecular gases

Abstract

A device for shifting the frequency of infrared radiation from a CO.sub.2 laser by stimulated Raman scattering in either H.sub.2 or D.sub.2. The device of the preferred embodiment comprises an H.sub.2 Raman laser having dichroic mirrors which are reflective for 16 .mu.m radiation and transmittive for 10 .mu.m, disposed at opposite ends of an interaction cell. The interaction cell contains a diatomic molecular gas, e.g., H.sub.2, D.sub.2, T.sub.2, HD, HT, DT and a capillary waveguide disposed within the cell. A liquid nitrogen jacket is provided around the capillary waveguide for the purpose of cooling. In another embodiment the input CO.sub.2 radiation is circularly polarized using a Fresnel rhomb .lambda./4 plate and applied to an interaction cell of much longer length for single pass operation.

Inventors:
 [1]
  1. Santa Fe, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
863536
Patent Number(s):
4194170
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:
shifting; infrared; radiation; rotational; raman; resonances; diatomic; molecular; gases; device; frequency; laser; stimulated; scattering; preferred; embodiment; comprises; dichroic; mirrors; reflective; 16; transmittive; 10; disposed; opposite; interaction; cell; contains; gas; hd; dt; capillary; waveguide; liquid; nitrogen; jacket; provided; purpose; cooling; input; circularly; polarized; fresnel; rhomb; lambda; plate; applied; length; single; pass; operation; stimulated raman; embodiment comprises; raman laser; molecular gas; raman scattering; preferred embodiment; infrared radiation; capillary waveguide; liquid nitrogen; single pass; diatomic molecular; circularly polarized; cell contains; molecular gases; circularly polarize; pass operation; cell contain; capillary wave; dichroic mirror; /372/307/

Citation Formats

Kurnit, Norman A. Shifting of infrared radiation using rotational raman resonances in diatomic molecular gases. United States: N. p., 1980. Web.
Kurnit, Norman A. Shifting of infrared radiation using rotational raman resonances in diatomic molecular gases. United States.
Kurnit, Norman A. Tue . "Shifting of infrared radiation using rotational raman resonances in diatomic molecular gases". United States. https://www.osti.gov/servlets/purl/863536.
@article{osti_863536,
title = {Shifting of infrared radiation using rotational raman resonances in diatomic molecular gases},
author = {Kurnit, Norman A},
abstractNote = {A device for shifting the frequency of infrared radiation from a CO.sub.2 laser by stimulated Raman scattering in either H.sub.2 or D.sub.2. The device of the preferred embodiment comprises an H.sub.2 Raman laser having dichroic mirrors which are reflective for 16 .mu.m radiation and transmittive for 10 .mu.m, disposed at opposite ends of an interaction cell. The interaction cell contains a diatomic molecular gas, e.g., H.sub.2, D.sub.2, T.sub.2, HD, HT, DT and a capillary waveguide disposed within the cell. A liquid nitrogen jacket is provided around the capillary waveguide for the purpose of cooling. In another embodiment the input CO.sub.2 radiation is circularly polarized using a Fresnel rhomb .lambda./4 plate and applied to an interaction cell of much longer length for single pass operation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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