期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 780, 期 -, 页码 727-733出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.11.403
关键词
Ag4P2Se6; Nonlinear optical crystal; Second-order harmonic generation; Crystal structure
资金
- National Natural Science Foundation of China [11747061, 11804007]
- Key Project of Baoji University of Arts And Sciences [ZK2017035]
- Technology Innovation Guide Project of Baoji City [2017JH2-20, 2017JH-19]
Mid-infrared (MIR) nonlinear optical (NLO) material is critical to laser frequency-conversion technology. Although the main commercial MIR NLO crystals (AgGaS2 AgGaSe2 and ZnGeP2) are practically used, they still have some intrinsic drawbacks, so that it is of great scientific significance to discover new materials with good MIR NLO performances. Among the main systems of chalcogenides to explore MIR NLO crystals, metal thiophosphates and selenophosphates are competitive for their structural diversities and strong covalent P-Q bonds. Here, Ag4P2Se6 (P2(1)2(1)2(1)) was selected to evaluate the second-order harmonic generation (SHG) property. As a result, the SHG response with phase-matching ability is about 0.5 times that of AgGaS2 at 2.05 mu m in the particle range of 210-270 mu m, and the laser damage threshold (LDT) is larger than that of AgGaS2. Remarkably, this compound is of low melt temperature of 642 degrees C with a congruent melting character, also possesses excellent chemical stability, facilitating its further crystal growth and fabrication. (C) 2018 Elsevier B.V. All rights reserved.
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