Second-harmonic generation from sol-gel-derived ferroelectric and piezoelectric thin films

J. M. Boulton; Gimtong T. Teowee; W. M. Bommersbach; Donald R. Uhlmann

doi:10.1117/12.132023

7 December 1992 Second-harmonic generation from sol-gel-derived ferroelectric and piezoelectric thin films

J. M. Boulton, Gimtong T. Teowee, W. M. Bommersbach, Donald R. Uhlmann

Proceedings Volume 1758, Sol-Gel Optics II; (1992) https://doi.org/10.1117/12.132023
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

Sol-gel routes were developed to Ba₂NaNb₅O₁₅, BaTiO₃, Ba_0.8Pb_0.2TiO₃, Ba_0.8Sr_0.2TiO₃, Bi₄Ti₃O₁₂, LiNbO₃, LiTaO₃, Pb₅Ge₃O₁₁, PbTiO₃, Pb_0.85La_0.15Ti_0.96O₃, PbZr_0.2Ti_0.8O₃, WO₃ and ZnO thin films. Second harmonic generation (SHG) from these films deposited on fused SiO₂ was investigated as a function of processing temperature. The SHG values were found to be related to the second-order nonlinear optical susceptibilities of the bulk materials, and dependent on the crystal size and crystalline orientation of the film. The highest SHG observed was from PbTiO₃ films which is consistent with the fact that the d-coefficient of PbTiO₃ is the highest among that of any room temperature ferroelectric. The poor SHG activity of BaTiO₃-based films was due to the very small grain size of the sol-gel derived material.

Citation Download Citation

J. M. Boulton, Gimtong T. Teowee, W. M. Bommersbach, and Donald R. Uhlmann "Second-harmonic generation from sol-gel-derived ferroelectric and piezoelectric thin films", Proc. SPIE 1758, Sol-Gel Optics II, (7 December 1992); https://doi.org/10.1117/12.132023

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