Vapor transport equilibrated lithium niobate resistant to photorefractive damage

Rostislav V. Roussev; Roger Route; Mordechai Katz; Dieter Jundt; Claudia Kajiyama; Martin M. Fejer

doi:10.1117/12.592604

23 March 2005 Vapor transport equilibrated lithium niobate resistant to photorefractive damage

Rostislav V. Roussev, Roger Route, Mordechai Katz, Dieter Jundt, Claudia Kajiyama, Martin M. Fejer

Proceedings Volume 5710, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IV; (2005) https://doi.org/10.1117/12.592604
Event: Lasers and Applications in Science and Engineering, 2005, San Jose, California, United States

Abstract

We use a combination of vapor transport equilibration and moderate MgO doping (≤1%) to explore near-stoichiometric damage resistant lithium niobate crystals with improved properties for periodic poling and annealed-proton-exchange waveguide fabrication compared to the commercially available 5-mol% MgO-doped crystals. High damage resistance, measured by the saturated space-charge field generated in the crystal by 514 nm radiation, was obtained for all MgO doping concentrations (0.3, 0.5 and 1%) with appropriate equilibration. Green-induced infrared absorption was also measured in the 0.3-% doped crystal and was below the detection limit. Dispersion in the region 460-1550 nm was measured. Periodic poling was performed using LiCl solution electrodes. Poling quality improves with lowering MgO concentration. Waveguides for frequency doubling of 1550 nm were fabricated in the 1% doped crystal with losses as low as 0.4 dB/cm and normalized efficiency of ~10%/Wcm².

Citation Download Citation

Rostislav V. Roussev, Roger Route, Mordechai Katz, Dieter Jundt, Claudia Kajiyama, and Martin M. Fejer "Vapor transport equilibrated lithium niobate resistant to photorefractive damage", Proc. SPIE 5710, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications IV, (23 March 2005); https://doi.org/10.1117/12.592604

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