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Title: Optical harmonic generator

Abstract

A pair of uniaxial birefringent crystal elements are fixed together to form a serially arranged, integral assembly which, alternatively, provides either a linearly or elliptically polarized second-harmonic output wave or a linearly polarized third-harmonic output wave. The "extraordinary" or "e" directions of the crystal elements are oriented in the integral assembly to be in quadrature (90.degree.). For a second-harmonic generation in the Type-II-Type-II angle tuned case, the input fundamental wave has equal amplitude "o" and "e" components. For a third-harmonic generation, the input fundamental wave has "o" and "e" components whose amplitudes are in a ratio of 2:1 ("o":"e" reference first crystal). In the typical case of a linearly polarized input fundamental wave this can be accomplished by simply rotating the crystal assembly about the input beam direction by 10.degree.. For both second and third harmonic generation input precise phase-matching is achieved by tilting the crystal assembly about its two sensitive axes ("o").

Inventors:
 [1];  [2];  [1]
  1. (Livermore, CA)
  2. (Pleasanton, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
865412
Patent Number(s):
4510402
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
optical; harmonic; generator; pair; uniaxial; birefringent; crystal; elements; fixed; form; serially; arranged; integral; assembly; alternatively; provides; linearly; elliptically; polarized; second-harmonic; output; wave; third-harmonic; extraordinary; directions; oriented; quadrature; 90; degree; generation; type-ii-type-ii; angle; tuned; input; fundamental; equal; amplitude; components; amplitudes; ratio; reference; typical; accomplished; simply; rotating; beam; direction; 10; third; precise; phase-matching; achieved; tilting; sensitive; axes; input beam; beam direction; linearly polarized; third-harmonic generation; harmonic generation; crystal elements; serially arranged; output wave; optical harmonic; fundamental wave; third harmonic; /359/372/

Citation Formats

Summers, Mark A., Eimerl, David, and Boyd, Robert D. Optical harmonic generator. United States: N. p., 1985. Web.
Summers, Mark A., Eimerl, David, & Boyd, Robert D. Optical harmonic generator. United States.
Summers, Mark A., Eimerl, David, and Boyd, Robert D. Tue . "Optical harmonic generator". United States. https://www.osti.gov/servlets/purl/865412.
@article{osti_865412,
title = {Optical harmonic generator},
author = {Summers, Mark A. and Eimerl, David and Boyd, Robert D.},
abstractNote = {A pair of uniaxial birefringent crystal elements are fixed together to form a serially arranged, integral assembly which, alternatively, provides either a linearly or elliptically polarized second-harmonic output wave or a linearly polarized third-harmonic output wave. The "extraordinary" or "e" directions of the crystal elements are oriented in the integral assembly to be in quadrature (90.degree.). For a second-harmonic generation in the Type-II-Type-II angle tuned case, the input fundamental wave has equal amplitude "o" and "e" components. For a third-harmonic generation, the input fundamental wave has "o" and "e" components whose amplitudes are in a ratio of 2:1 ("o":"e" reference first crystal). In the typical case of a linearly polarized input fundamental wave this can be accomplished by simply rotating the crystal assembly about the input beam direction by 10.degree.. For both second and third harmonic generation input precise phase-matching is achieved by tilting the crystal assembly about its two sensitive axes ("o").},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}

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