Growth, spectra, and laser properties of Pr,Er:LaF3 crystals for a 2.7 μm laser
收藏科学数据银行2025-03-12 更新2026-04-23 收录
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A single crystal of LaF3 co-doped with 2 at.% Pr3+ and 2 at.% Er3+ was grown and reported for the first time, to the best of our knowledge. The structure and spectral properties were investigated, and Judd-Ofelt (J-O) calculations were performed. Ω2, Ω4, and Ω6 were calculated to be 1.70, 0.40, and 1.13, respectively, and the fluorescence branching ratio β (4I11/2→4I13/2) was 16.82%. The lifetime of Er3+:4I13/2 decreased from 22.60 to 4.736 ms because of the deactivation effect of Pr3+ on Er3+. Pr3+ effectively attenuated the self-termination effect of Er3+. An average laser power of 65 mW was achieved at 2.7 μm. The first continuous-wave output was achieved, indicating that the Pr,Er:LaF3 crystal is a potential gain medium for mid-infrared lasers.
提供机构：
Shanghai Institute of Optics and Fine Mechanics
创建时间：
2025-03-11
