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- Title
Eu<sub>2</sub>P<sub>2</sub>S<sub>6</sub>: The First Rare‐Earth Chalcogenophosphate Exhibiting Large Second‐Harmonic Generation Response and High Laser‐Induced Damage Threshold.
- Authors
Huang, Xiao; Yang, Si‐Han; Li, Xiao‐Hui; Liu, Wenlong; Guo, Sheng‐Ping
- Abstract
Metal chalcogenophosphates are receiving increasing interest, specifically as promising infrared nonlinear optical (NLO) candidates. Here, a rare‐earth chalcogenophosphate Eu2P2S6 crystallizing in the monoclinic noncentrosymmetric space group Pn was synthesized using a high‐temperature solid‐state method. Its structure features isolated [P2S6]4− dimer, and two types of EuS8 bicapped triangular prisms. Eu2P2S6 exhibits a phase‐matchable second‐harmonic generation (SHG) response ≈0.9×AgGaS2@2.1 μm, and high laser‐induced damage threshold of 3.4×AgGaS2, representing the first rare‐earth NLO chalcogenophosphate. The theoretical calculation result suggests that the SHG response is ascribed to the synergetic contribution of [P2S6]4− dimers and EuS8 bicapped triangular prisms. This work provides not only a promising high‐performance infrared NLO material, but also opens the avenue for exploring rare‐earth chalcogenophosphates as potential IR NLO materials.
- Subjects
SPACE groups; NONLINEAR optics; DIMERS; PRISMS
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 32, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202206791