Characterization of GRIIRA properties in LiNbO3 and LiTaO3 with different compositions and doping

J. Hirohashi; T. Tago; O. Nakamura; A. Miyamoto; Y. Furukawa

doi:10.1117/12.773742

13 February 2008 Characterization of GRIIRA properties in LiNbO₃ and LiTaO₃ with different compositions and doping

J. Hirohashi, T. Tago, O. Nakamura, A. Miyamoto, Y. Furukawa

Proceedings Volume 6875, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VII; 687516 (2008) https://doi.org/10.1117/12.773742
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

Green-induced infrared absorption (GRIIRA) properties were characterized for LiNbO₃ (LN) and LiTaO₃ (LT) single crystals. GRIIRA was measured using a photothermal common-path interferometer. Several LN and LT with different concentrations and doping materials were investigated. Mg-doped near-stoichiometric LT (Mg-SLT) had the lowest IR absorption. In addition, no GRIIRA was observed only in MgSLT. Therefore, Mg-SLT could be the most suitable material for high power green generation. In LN crystals, higher GRIIRA was observed in non-doped congruent LN (CLN) which has low photorefractive damage threshold. The 1.3 mol% Mg doped SLN had the lowest GRIIRA within the investigated LN crystals. Even in the materials with low GRIIRA, two different characteristics were observed; initially high IR absorption and slow relaxation time of GRIIRA. The first characteristic was observed for Mg doped LN which has a higher number of scattering centers. The second was strongly observed in Mg doped LN which has a higher level of absorption in the UV region.

Citation Download Citation

J. Hirohashi, T. Tago, O. Nakamura, A. Miyamoto, and Y. Furukawa "Characterization of GRIIRA properties in LiNbO₃ and LiTaO₃ with different compositions and doping", Proc. SPIE 6875, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VII, 687516 (13 February 2008); https://doi.org/10.1117/12.773742

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