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Optimized Oriented Seed Growth and Optical Properties of High-Quality LiInSe2 Crystals

Abstract

Mid-infrared (MIR) coherent light generated by nonlinear optical (NLO) materials is crucial for military and civilian applications. Among the MIR optical crystals family, LiInSe2 (LISe) single crystal is a promising candidate due to its remarkable physical properties. Herein, high-quality LISe crystal with the largest diameter of 31 mm was successfully obtained by Bridgman growth method with oriented seed in this work. The crystalline quality and optical homogeneity of LISe were demonstrated by high-resolution X-ray diffraction (HRXRD), Laue diffraction, and optical interferometry measurements, respectively. Additionally, a complete survey of transmittance spectra, absorption coefficients, and refractive index were systematically investigated. Furthermore, we found that the absorption coefficients of LISe at 1.064 μm can be obviously decreased after a thermal annealing in LISe atmosphere condition. More generally, our results will contribute significantly to the practical applications of LISe in the MIR technology field.

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Publication details

The article was received on 26 Sep 2018, accepted on 31 Oct 2018 and first published on 06 Nov 2018


Article type: Paper
DOI: 10.1039/C8CE01640B
Citation: CrystEngComm, 2018, Accepted Manuscript
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    Optimized Oriented Seed Growth and Optical Properties of High-Quality LiInSe2 Crystals

    N. Jia, X. Xiong, S. Wang, T. Yu, B. Han, J. Qiao, C. Li and X. Tao, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE01640B

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