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

Author Affiliations +

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, J. Hirohashi, T. Tago, T. Tago, O. Nakamura, O. Nakamura, A. Miyamoto, A. Miyamoto, Y. Furukawa, 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); doi: 10.1117/12.773742; https://doi.org/10.1117/12.773742

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