LiInSe2: A biaxial ternary chalcogenide crystal for nonlinear optical applications in the midinfrared

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Single crystals of lithium selenoindate (LiInSe2) are grown by the Bridgman-Stockbarger technique up to sizes of 10 mm in diameter and 20 mm in length. The different phases have color from yellow (as grown) to dark red (after annealing) but all have the same wurtzite type structure mm2 with slightly differing cell parameters. The band gap for the yellow phase at 300 K is at 2.86-2.87 eV. The red color is attributed to point defects and can be removed by proper illumination. Sellmeier equations are constructed for the 0.5-11 mum range and their validity is checked with second harmonic generation which provides first estimations of the nonlinear coefficients of LiInSe2. The potential of LiInSe2 is compared to that of the widely spread and technologically mature AgGaS2. (C) 2002 American Institute of Physics
Publisher
AMER INST PHYSICS
Issue Date
2002-06
Language
English
Article Type
Article
Keywords

2ND-HARMONIC GENERATION; SINGLE-CRYSTALS; AGGAS2; COEFFICIENT; GROWTH; GAP

Citation

JOURNAL OF APPLIED PHYSICS, v.91, no.12, pp.9475 - 9480

ISSN
0021-8979
DOI
10.1063/1.1478139
URI
http://hdl.handle.net/10203/212786
Appears in Collection
PH-Journal Papers(저널논문)
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