1. Combining rigid and deformable groups to construct a robust birefringent crystal for compact polarization components.
- Author
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Du Z, Song X, Liu W, Wang Z, Sha H, Xu Q, Zhou Y, Li Y, Luo J, and Zhao S
- Abstract
There is a pressing demand for the development of novel birefringent crystals tailored for compact optical components, especially for crystals exhibiting large birefringence across a range of temperatures. This has commonly been achieved by introducing various deformable groups with high polarizability anisotropy. In this study, we combined both rigid and deformable groups to synthesise a new birefringent crystal, Al
2 Te2 MoO10 , which demonstrates an exceptional birefringence value of 0.29@550 nm at room temperature. Not only is this higher birefringence than that of commercial crystals, but Al2 Te2 MoO10 exhibits excellent birefringence stability over a wide temperature range, from 123 to 503 K. In addition, the first-principles theory calculations and structural analyses suggest that although the rigid AlO6 groups do not make much contribution to the prominent birefringence, they nonetheless played a role in maintaining the structural anisotropy at elevated temperatures. Based on these findings, this paper proposes a novel structural design strategy to complement conventional approaches for developing optimal birefringent crystals under various environmental conditions., (Copyright © 2024 Science China Press. Published by Elsevier B.V. All rights reserved.)- Published
- 2024
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