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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 7 — Mar. 1, 2009
  • pp: C98–C111

Optical Gaussian beam interaction with one-dimensional thermal wave in the Raman-Nath configuration

Roman J. Bukowski  »View Author Affiliations


Applied Optics, Vol. 48, Issue 7, pp. C98-C111 (2009)
http://dx.doi.org/10.1364/AO.48.000C98


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Abstract

Optical Gaussian beam interaction with a one-dimensional temperature field in the form of a thermal wave in the Raman-Nath configuration is analyzed. For the description of the Gaussian beam propagation through the nonstationary temperature field the complex geometric optics method was used. The influence of the refractive coefficient modulation by thermal wave on the complex ray phase, path, and amplitude was taken into account. It was assumed that for detection of the modulated Gaussian beam parameters two types of detector can be used: quadrant photodiodes or centroidal photodiodes. The influence of such parameters as the size and position of the Gaussian beam waist, the laser-screen (detector) distance, the thermal wave beam position and width, as well as thermal wave frequency and the distance between the probing optical beam axis and source of thermal waves on the so-called normal signal was taken into account.

© 2009 Optical Society of America

OCIS Codes
(080.0080) Geometric optics : Geometric optics
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.6810) Instrumentation, measurement, and metrology : Thermal effects
(190.4870) Nonlinear optics : Photothermal effects
(080.5692) Geometric optics : Ray trajectories in inhomogeneous media
(260.2710) Physical optics : Inhomogeneous optical media

History
Original Manuscript: July 30, 2008
Revised Manuscript: October 28, 2008
Manuscript Accepted: October 31, 2008
Published: December 24, 2008

Citation
Roman J. Bukowski, "Optical Gaussian beam interaction with one-dimensional thermal wave in the Raman-Nath configuration," Appl. Opt. 48, C98-C111 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-7-C98

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