Effect of proton exchange on the nonlinear optical properties of LiNbO 3 and LiTaO3

Wei Yung Hsu, Craig S. Willand, Venkatraman Gopalan, Mool C. Gupta

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Abstract

The effect of proton exchange carried out using benzoic and pyrophosphoric acid on the nonlinear optical coefficient (d) of LiNbO3 and LiTaO3 was studied using a second-harmonic generation reflectance technique. Significant degradation in the d coefficient of LiNbO3 and LiTaO3 was observed as a result of proton exchange with either benzoic or pyrophosphoric acid under the conditions studied. Some recovery only in the short time proton-exchanged sample (0.5 h at 180°C) of LiNbO 3 was observed under thermal annealing at 350°C for 1 h. Results of in situ measurement of second-harmonic signal recovery under thermal annealing are reported. Results are also presented on theoretical and experimental variations of second-harmonic generation intensity with an incident polarization angle.

Original languageEnglish (US)
Pages (from-to)2263-2265
Number of pages3
JournalApplied Physics Letters
Volume61
Issue number19
DOIs
StatePublished - 1992

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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