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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 12, Iss. 3 — Mar. 1, 1995
  • pp: 384–392

Gas-phase thermal-grating contributions to four-wave mixing

Phillip H. Paul, Roger L. Farrow, and Paul M. Danehy  »View Author Affiliations


JOSA B, Vol. 12, Issue 3, pp. 384-392 (1995)
http://dx.doi.org/10.1364/JOSAB.12.000384


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Abstract

The nature of optical scattering from laser-induced thermal gratings created in the gas phase is investigated. Thermal gratings are produced with the illumination geometry used to perform degenerate four-wave mixing (DFWM) measurements. Such scattering from thermal gratings can act as a phase-matched interference signal. A solution to the linearized hydrodynamic equations is developed to model the dynamics of the thermal grating. Predictions of this model that uses realistic gas properties are shown to compare favorably with laboratory measurements. The model includes the effects of finite-rate energy deposition, damping by viscosity and thermal conduction, mass diffusion of the excited-state grating, and electrostrictive compression.

© 1995 Optical Society of America

Citation
Phillip H. Paul, Roger L. Farrow, and Paul M. Danehy, "Gas-phase thermal-grating contributions to four-wave mixing," J. Opt. Soc. Am. B 12, 384-392 (1995)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-12-3-384

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