Accurate Measurement Of The Electro-Optic Coefficients : Application To LiNbO[sub]3[/sub]

M. Aillerie; M. D. Fontana; F. Abdi; C. Carabatos-Nedelec; N. Theofanous

doi:10.1117/12.950003

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31 January 1989 Accurate Measurement Of The Electro-Optic Coefficients : Application To LiNbO₃

M. Aillerie, M. D. Fontana, F. Abdi, C. Carabatos-Nedelec, N. Theofanous

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Proceedings Volume 1018, Electro-Optic and Magneto-Optic Materials; (1989) https://doi.org/10.1117/12.950003
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

Abstract

A technique issued from the Senarmont method is developped in order to determine the electro-optic (E/0) coefficients of solid compounds. The transfer function of the transmitted beam is given by : I/Io=(1/2)[1±sin(Γ-2B], where Γ is the phase shift induced by the natural birefringence and the applied (AC +DC) electric field in the sample I and Io are, respectively, the output and input beam intensities, while B represents the analyser azimuthal angle. We show the various methods derived from the Senarmont arrangement which can be used to determine the E/0 coefficients. The method which provides both good accuracy and correctness is based on a direct determination of the phase shift when the DC and AC fundamental components of I are equal to zero and the frequency of the demodulated output transmitted beam is double of the AC frequency. The measurements take into account of the optical absorption of the set-up and the temperature dependence of the natural birefringence. This method is applied to the determination of the rc coefficient in LiNbO3 around room temperature.

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M. Aillerie, M. D. Fontana, F. Abdi, C. Carabatos-Nedelec, and N. Theofanous "Accurate Measurement Of The Electro-Optic Coefficients : Application To LiNbO₃", Proc. SPIE 1018, Electro-Optic and Magneto-Optic Materials, (31 January 1989); https://doi.org/10.1117/12.950003

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