Adduct-Type IR Nonlinear-Optical Crystal SbI3·(S8)3 with a Large Second-Harmonic Generation and a High Laser-Induced Damage Threshold

Sheng-Ping Guo; Zong-Dong Sun; Yang Chi; Huai-Guo Xue

doi:10.1021/acs.inorgchem.8b01999

Adduct-Type IR Nonlinear-Optical Crystal SbI₃·(S₈)₃ with a Large Second-Harmonic Generation and a High Laser-Induced Damage Threshold

Inorg Chem. 2018 Sep 4;57(17):11282-11288. doi: 10.1021/acs.inorgchem.8b01999. Epub 2018 Aug 23.

Authors

Sheng-Ping Guo¹, Zong-Dong Sun¹, Yang Chi¹, Huai-Guo Xue¹

Affiliation

¹ School of Chemistry and Chemical Engineering , Yangzhou University , Yangzhou , Jiangsu 225002 , P. R. China.

PMID: 30136571
DOI: 10.1021/acs.inorgchem.8b01999

Abstract

A noncentrosymmetric adduct, SbI₃·(S₈)₃, is obtained by a facile solution method. It crystallizes in the trigonal space group R3 m, and its structure features van der Waals force connected, isolated trigonal-pyramidal SbI₃ and chairlike S₈ units. SbI₃·(S₈)₃ exhibits strong second-harmonic-generation responses around 4 times that of KH₂PO₄ (1.064 μm) and 1 times that of AgGaS₂ (AGS; 2.1 μm) at 210-250 μm, respectively. Under both laser-radiation wavelengths, it exhibits type I phase-matching behavior. Its laser-induced damage threshold is measured to be around 26 times that of AGS under 1.064 μm. To better understand these optical data, theoretical calculations are performed to address its electronic structure and optical properties.