Abstract

In this study, an excellent polarization optical crystal LiNa₅Mo₉O₃₀ with wide transmission range and high laser damage threshold was researched in detail. The laser damage threshold of the LiNa₅Mo₉O₃₀ crystal was measured to be 2.64 GW/cm², which was the highest among polarized optical crystals. The birefringence in the range of 0.435–5 μm was larger than 0.14, while the wedge angle between 31.94° and 32.12° would satisfy the application in this waveband. The extinction ratio of the fabricated prism with the wedge angel of 31.09° was larger than 15,000:1. The results show that the LiNa₅Mo₉O₃₀ prism is an excellent polarization device, especially in the mid-infrared range and high-power applications.

© 2022 Chinese Laser Press

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