Tunable infrared source employing Raman mixing
Abstract
A tunable source of infrared radiation is obtained by irradiating an assemblage of Raman active gaseous atoms or molecules with a high intensity pumping beam of coherent radiation at a pump frequency .omega..sub.p to stimulate the generation of Stokes wave energy at a Stokes frequency .omega..sub.s and to stimulate the Raman resonant mode at the Raman mode frequency .omega..sub.R within the irradiated assemblage where the pump frequency .omega..sub.p minus the Stokes frequency .omega..sub.s is equal to the Raman mode frequency .omega..sub.R. The stimulated assemblage is irradiated with a tunable source of coherent radiation at a frequency .omega..sub.i to generate the output infrared radiation of the frequency .omega..sub.0 which is related to the Raman mode frequency .omega..sub.R and the input wave .omega..sub.i by the relation .omega..sub.0 =.omega..sub.i .+-..omega..sub.R. In one embodiment the interaction between the pump wave energy .omega..sub.p and the tunable input wave energy .omega..sub.i is collinear and the ratio of the phase velocity mismatch factor .DELTA.k to the electric field exponential gain coefficient T is within the range of 0.1 to 5. In another embodiment the pump wave energy .omega..sub.p and the tunable input wave energy .omega..sub.i have velocity vectors k.sub.p and k.sub.i which cross at an angle tomore »
- Inventors:
-
- Stanford, CA
- Menlo Park, CA
- Issue Date:
- OSTI Identifier:
- 863615
- Patent Number(s):
- 4213060
- Assignee:
- Board of Trustees of Leland Stanford University (Stanford, CA)
- 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
- DOE Contract Number:
- EY-76-S-04-3570
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- tunable; infrared; source; employing; raman; mixing; radiation; obtained; irradiating; assemblage; active; gaseous; atoms; molecules; intensity; pumping; beam; coherent; pump; frequency; omega; stimulate; generation; stokes; wave; energy; resonant; mode; irradiated; minus; equal; stimulated; generate; output; related; input; relation; embodiment; interaction; collinear; ratio; phase; velocity; mismatch; factor; delta; electric; field; exponential; coefficient; range; vectors; angle; compensate; mismatches; medium; generated; cell; combined; produce; pumping beam; coherent radiation; electric field; infrared radiation; wave energy; phase velocity; pump energy; raman cell; tunable source; stokes wave; raman active; resonant mode; infrared source; input wave; /359/
Citation Formats
Byer, Robert L, and Herbst, Richard L. Tunable infrared source employing Raman mixing. United States: N. p., 1980.
Web.
Byer, Robert L, & Herbst, Richard L. Tunable infrared source employing Raman mixing. United States.
Byer, Robert L, and Herbst, Richard L. Tue .
"Tunable infrared source employing Raman mixing". United States. https://www.osti.gov/servlets/purl/863615.
@article{osti_863615,
title = {Tunable infrared source employing Raman mixing},
author = {Byer, Robert L and Herbst, Richard L},
abstractNote = {A tunable source of infrared radiation is obtained by irradiating an assemblage of Raman active gaseous atoms or molecules with a high intensity pumping beam of coherent radiation at a pump frequency .omega..sub.p to stimulate the generation of Stokes wave energy at a Stokes frequency .omega..sub.s and to stimulate the Raman resonant mode at the Raman mode frequency .omega..sub.R within the irradiated assemblage where the pump frequency .omega..sub.p minus the Stokes frequency .omega..sub.s is equal to the Raman mode frequency .omega..sub.R. The stimulated assemblage is irradiated with a tunable source of coherent radiation at a frequency .omega..sub.i to generate the output infrared radiation of the frequency .omega..sub.0 which is related to the Raman mode frequency .omega..sub.R and the input wave .omega..sub.i by the relation .omega..sub.0 =.omega..sub.i .+-..omega..sub.R. In one embodiment the interaction between the pump wave energy .omega..sub.p and the tunable input wave energy .omega..sub.i is collinear and the ratio of the phase velocity mismatch factor .DELTA.k to the electric field exponential gain coefficient T is within the range of 0.1 to 5. In another embodiment the pump wave energy .omega..sub.p and the tunable input wave energy .omega..sub.i have velocity vectors k.sub.p and k.sub.i which cross at an angle to each other to compensate for phase velocity mismatches in the medium. In another embodiment, the Stokes wave energy .omega..sub.s is generated by pump energy .omega..sub.p in a first Raman cell and .omega..sub.s, .omega..sub.i and .omega..sub.p are combined in a second Raman mixing cell to produce the output at .omega..sub.i.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1980},
month = {Tue Jan 01 00:00:00 EST 1980}
}