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Crystals 2016, 6(10), 121; doi:10.3390/cryst6100121

A High Laser Damage Threshold and a Good Second-Harmonic Generation Response in a New Infrared NLO Material: LiSm3SiS7

Key Laboratory of Functional Materials and Devices for Special Environments of CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics & Chemistry of CAS, 40-1 South Beijing Road, Urumqi 830011, China
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Academic Editor: Helmut Cölfen
Received: 29 June 2016 / Revised: 16 September 2016 / Accepted: 19 September 2016 / Published: 23 September 2016
(This article belongs to the Special Issue Nonlinear Optical Crystals)
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Abstract

A series of new infrared nonlinear optical (IR NLO) materials, LiRe3MS7 (Re = Sm, Gd; M = Si, Ge), have been successfully synthesized in vacuum-sealed silica tubes via a high-temperature solid-state method. All of them crystallize in the non-centrosymmetric space group P63 of the hexagonal system. In their structures, LiS6 octahedra connect with each other by sharing common faces to form infinite isolated one-dimensional [LiS3]n chains along the 63 axis. ReS8 polyhedra share edges and corners to construct a three-dimensional tunnel structure with [LiS3]n chains located inside. Remarkably, LiSm3SiS7 shows promising potential as one new IR NLO candidate, including a wide IR transparent region (0.44–21 μm), a high laser damage threshold (LDT) (3.7 × benchmark AgGaS2), and a good NLO response (1.5 × AgGaS2) at a particle size between 88 μm and 105 μm. Dipole-moment calculation was also used to analyze the origin of NLO responses for title compounds. View Full-Text
Keywords: nonlinear optical materials; crystal structure; good NLO responses nonlinear optical materials; crystal structure; good NLO responses
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhen, N.; Nian, L.; Li, G.; Wu, K.; Pan, S. A High Laser Damage Threshold and a Good Second-Harmonic Generation Response in a New Infrared NLO Material: LiSm3SiS7. Crystals 2016, 6, 121.

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