Four-wave mixing using polarization grating induced thermal grating in liquids exhibiting circular dichroism

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Description

A novel four-wave mixing technique for the detection of circular dichroism in optically active liquid samples is demonstrated. When two cross-polarized laser beams are crossed at a small angle in a circular dichroic liquid a weak thermal grating is produced with a phase depending on the sign of the circular dichroism. The authors show that the polarization of one of the beams can be modified to allow coherent interference with an intensity-grating induced thermal grating. A probe beam scattering from the composite grating results in a signal that reveals the sign and magnitude of the circular dichroism. The use of ... continued below

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23 p.

Creation Information

Nunes, J.A.; Tong, W.G.; Chandler, D.W. & Rahn, L.A. April 1, 1995.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Livermore, CA (United States)
    Place of Publication: Livermore, California

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Description

A novel four-wave mixing technique for the detection of circular dichroism in optically active liquid samples is demonstrated. When two cross-polarized laser beams are crossed at a small angle in a circular dichroic liquid a weak thermal grating is produced with a phase depending on the sign of the circular dichroism. The authors show that the polarization of one of the beams can be modified to allow coherent interference with an intensity-grating induced thermal grating. A probe beam scattering from the composite grating results in a signal that reveals the sign and magnitude of the circular dichroism. The use of this technique to optimize the signal-to-noise ratio in the presence of scattered light and laser intensity noise is discussed.

Physical Description

23 p.

Notes

OSTI as DE97052383

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  • Other Information: PBD: Apr 1995

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  • Other: DE97052383
  • Report No.: SAND--95-8221
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/481612 | External Link
  • Office of Scientific & Technical Information Report Number: 481612
  • Archival Resource Key: ark:/67531/metadc684268

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • April 1, 1995

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

Description Last Updated

  • April 12, 2016, 8:17 p.m.

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Nunes, J.A.; Tong, W.G.; Chandler, D.W. & Rahn, L.A. Four-wave mixing using polarization grating induced thermal grating in liquids exhibiting circular dichroism, report, April 1, 1995; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc684268/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.