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Proceedings Paper

Short-time rapid thermal annealing processes for periodically domain-inverted structures with nearly straight domain walls in proton-exchanged LiTaO3
Author(s): Cangsang Zhao; Reinhart Engelmann
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Paper Abstract

Short-period domain inverted gratings with considerable inversion depth can be formed on the -z face of LiTaO3 by proton exchange in benzoic rather than pyrophosphoric acid followed by rapid thermal annealing at temperatures around 540 - 610 degree(s)C. This procedure allows the fabrication and characterization of first- second-, and third-order domain- inverted gratings for quasi-phase-matching blue-light generation. Annealing for extremely short time (approximately 6 - 12 s) is crucial for achieving domain-inverted structures with near-straight domain walls and least lateral expansion. Lateral domain expansion can be effectively suppressed by pre-annealing at low temperatures (

Paper Details

Date Published: 10 May 1996
PDF: 8 pages
Proc. SPIE 2700, Nonlinear Frequency Generation and Conversion, (10 May 1996); doi: 10.1117/12.239644
Show Author Affiliations
Cangsang Zhao, Oregon Graduate Institute of Science and Technology (United States)
Reinhart Engelmann, Oregon Graduate Institute of Science and Technology (United States)

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

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