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Proceedings Paper

Effect of post-growth annealing on the optical properties of LiGaS2 nonlinear crystals
Author(s): Alexander Yelisseyev; Marina Starikova; Ludmila Isaenko; Sergei Lobanov; Valentin Petrov
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Paper Abstract

High chalcogen volatility and Li interaction with the container walls result in variation of crystal composition and presence of both extended and point defects in as-grown LiGaS2 nonlinear crystals. Annealing in appropriate conditions is used to correct the composition and improve the optical quality. We annealed LiGaS2 in vacuum, in the presence of Li2S, Ga2S3, and S, and studied changes in transmission, photoluminescence and photo-induced absorption. OH groups, S-H and S-S complexes, sulfur vacancies and cation antisite defects (GaLi) are most important. Photo-induced absorption is reversible: It appears after illumination with UV/blue light and disappears after illumination with IR light or by heating the sample.

Paper Details

Date Published: 21 February 2011
PDF: 8 pages
Proc. SPIE 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X, 79171S (21 February 2011); doi: 10.1117/12.874547
Show Author Affiliations
Alexander Yelisseyev, Institute of Geology and Mineralogy (Russian Federation)
Marina Starikova, Novosibirsk State Technical Univ. (Russian Federation)
Ludmila Isaenko, Institute of Geology and Mineralogy (Russian Federation)
Sergei Lobanov, Institute of Geology and Mineralogy (Russian Federation)
Valentin Petrov, Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy (Germany)


Published in SPIE Proceedings Vol. 7917:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X
Konstantin L. Vodopyanov, Editor(s)

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