La6Cd0.75Ga2Q11.5Cl2.5 (Q = S and Se): two new nonlinear optical chalcohalides with a large laser-induced damage threshold

Feng Lin; Mengjia Luo; Ruiqi Wang; Xiangli Che; Fuqiang Huang

doi:10.1039/D0CE01852J

La₆Cd_0.75Ga₂Q_11.5Cl_2.5 (Q = S and Se): two new nonlinear optical chalcohalides with a large laser-induced damage threshold†

Feng Lin,^ab Mengjia Luo,^ab Ruiqi Wang,^c Xiangli Che*^ad and Fuqiang Huang

*^abcd

Author affiliations

* Corresponding authors

^a State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
E-mail: chexiangli@mail.sic.ac.cn, huangfq@mail.sic.ac.cn

^b Centre of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

^c State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

^d CAS Centre for Excellence in Superconducting Electronic (CENSE), Shanghai 200050, China

Abstract

Two new chalcohalides La₆Cd_0.75Ga₂Q_11.5Cl_2.5 (Q = S and Se) with mixed-anionic functional groups were synthesized through a high temperature reaction using LaCl₃ as reaction-flux. Both compounds crystalize in the non-centrosymmetric space group P6₃ with highly oriented tetrahedron [GaQ₄] and one-dimension chain [CdQ/Cl₆] (Q = S and Se). The La₆Cd_0.75Ga₂S_11.5Cl_2.5 shows a large laser-induced damage threshold (LIDT) (18.6 × AgGaS₂) and strong second harmonic generation (SHG) response (0.8 × AgGaS₂). These results indicate that the introduction of halogens into chalcogenides is beneficial to achieve large LIDTs and SHG response.

This article is part of the themed collection: Crystal Engineering Techniques

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Article information

DOI: https://doi.org/10.1039/D0CE01852J
Article type: Paper
Submitted: 21 Dec 2020
Accepted: 08 Feb 2021
First published: 08 Feb 2021

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CrystEngComm, 2021,23, 2133-2137

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La₆Cd_0.75Ga₂Q_11.5Cl_2.5 (Q = S and Se): two new nonlinear optical chalcohalides with a large laser-induced damage threshold

F. Lin, M. Luo, R. Wang, X. Che and F. Huang, CrystEngComm, 2021, 23, 2133 DOI: 10.1039/D0CE01852J

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