Share Email Print

Proceedings Paper

Photorefractive damage to bulk crystals and channel waveguides in periodically poled lithium tantalate
Author(s): William V. Davis; Mool C. Gupta
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We present the results of an experimental study of photorefractive damage caused by laser light at a wavelength of 488 nm in z-cut lithium tantalate bulk crystals and channel waveguides. The photorefractive damage was measured using both imaging technique and interferometry. Initially, we measured the photorefractive damage in virgin-poled crystal samples of various grades purchased from several sources. As expected, the amount of photorefractive damage is least in optical-grade crystals. In addition, we compared photorefractive damage in waveguides fabricated in virgin-poled and periodically poled optical-grade z-cut crystals. Our results confirm that the amount of photorefractive damage that occurs during irradiation is less in periodically poled waveguides. Furthermore, heating the waveguide devices to a temperature of 100 degree(s)C during irradiation removes most of the visible distortions of the waveguide mode profile that result from photorefractive damage for both the virgin-poled and periodically poled waveguides.

Paper Details

Date Published: 10 May 1996
PDF: 12 pages
Proc. SPIE 2700, Nonlinear Frequency Generation and Conversion, (10 May 1996); doi: 10.1117/12.239686
Show Author Affiliations
William V. Davis, Eastman Kodak Co. (United States)
Mool C. Gupta, Eastman Kodak Co. (United States)

Published in SPIE Proceedings Vol. 2700:
Nonlinear Frequency Generation and Conversion
Mool C. Gupta; William J. Kozlovsky; David C. MacPherson, Editor(s)

© SPIE. Terms of Use
Back to Top