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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 28, Iss. 4 — Apr. 1, 2011
  • pp: 873–881

Thermal expansion, normalized thermo-optic coefficients, and condition for second harmonic generation of a Nd:YAG laser with wide temperature bandwidth in RbTiOPO 4

Jacques Mangin, Gabriel Mennerat, and Philippe Villeval  »View Author Affiliations

JOSA B, Vol. 28, Issue 4, pp. 873-881 (2011)

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Interferometric determination of thermal expansion and of normalized thermo-optic coefficients of RbTiOPO 4 at four laser wavelengths are performed as a function of temperature. A suitable vectorial formalism applied to obtained data allows the establishment of the temperature dependence of refractive indices, and subsequent theoretical analysis enables one to predict that an extremum in the evolution of the phase-matching direction in the ( X , Y ) plane should occur near 100 ° C for type II second harmonic generation of Nd:YAG lasers, with a temperature bandwidth that can be as large as 117 ° C for a crystal of 10 mm in length. Such unusual behavior is observed experimentally by recording the conversion efficiency from 20 ° C up to 220 ° C for various propagation angles of light in the ( X , Y ) plane. Slight quadratic temperature dependence of the effective nonlinear coefficient is also observed.

© 2011 Optical Society of America

OCIS Codes
(120.6810) Instrumentation, measurement, and metrology : Thermal effects
(160.4330) Materials : Nonlinear optical materials
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4400) Nonlinear optics : Nonlinear optics, materials
(260.2030) Physical optics : Dispersion

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: October 28, 2010
Revised Manuscript: January 18, 2011
Manuscript Accepted: January 20, 2011
Published: March 23, 2011

Jacques Mangin, Gabriel Mennerat, and Philippe Villeval, "Thermal expansion, normalized thermo-optic coefficients, and condition for second harmonic generation of a Nd:YAG laser with wide temperature bandwidth in RbTiOPO4," J. Opt. Soc. Am. B 28, 873-881 (2011)

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