La6Cd0.75Ga2Q11.5Cl2.5 (Q = S and Se): two new nonlinear optical chalcohalides with a large laser-induced damage threshold. Issue 10 (1st March 2021)

• Record Type: Journal Article
• Authors: Lin, Feng; Luo, Mengjia; Wang, Ruiqi; Che, Xiangli; Huang, Fuqiang
• Is Part Of: CrystEngComm. Volume 23:Issue 10(2021)
• Page Start: 2133
• Page End: 2137
• Publication Date: 2021-03-01
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/d0ce01852j
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Two new nonlinear optical chalcohalides La6 Cd0.75 Ga2 Q11.5 Cl2.5 (Q = S and Se) with good NLO performance are reported, which shows the benefits of the introduction of Cl-atoms in enhancing polarization and LIDTs. Abstract : Two new chalcohalides La6 Cd0.75 Ga2 Q11.5 Cl2.5 (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 P 63 with highly oriented tetrahedron [GaQ4 ] and one-dimension chain [CdQ/Cl6 ] (Q = S and Se). The La6 Cd0.75 Ga2 S11.5 Cl2.5 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.