Periodic poling of stoichiometric lithium tantalate

Douglas J. Bamford; David J. Cook; Scott J. Sharpe

doi:10.1117/12.528311

14 June 2004 Periodic poling of stoichiometric lithium tantalate

Douglas J. Bamford, David J. Cook, Scott J. Sharpe

Proceedings Volume 5337, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications III; (2004) https://doi.org/10.1117/12.528311
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

Abstract

The periodic poling of stoichiometric lithium tantalate, a nonlinear optical material with great promise for the frequency conversion of high-average-power solid state lasers, has been investigated. Two problems with commercially available stoichiometric lithium tantalate substrates have been identified: non-reproducibility of the coercive field from one wafer to the next, and susceptibility to the formation of micro-domain defects. Strategies for dealing with these problems have been developed. Wafer-scale poling has been carried out to produce quasi-phasematching gratings with periods as short as 7.3 microns on half-millimeter thick substrates and 25.4 microns on millimeter-thick substrates. The phase-matching properties of periodically poled stoichiometric lithium tantalate have been measured using nonlinear optical frequency conversion. For processes which generate visible radiation, good agreement with predictions based on the published Sellmeier equation for stoichiometric lithium tantalite has been obtained.

Citation Download Citation

Douglas J. Bamford, David J. Cook, and Scott J. Sharpe "Periodic poling of stoichiometric lithium tantalate", Proc. SPIE 5337, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications III, (14 June 2004); https://doi.org/10.1117/12.528311

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