We present here the first tunable continuous-wave (CW) simultaneous dual-wavelength laser operation of a Pr³⁺:LiYF₄ crystal in the 900 nm spectral range using a single birefringent filter (BF) under excitation with a frequency doubled optically pumped semiconductor laser. By adjusting the rotation angle of the BF, the CW simultaneous dual-wavelength lasers operating at 869 and 915 nm, 894 and 915 nm, 915 and 923 nm, were obtained respectively.

中文翻译：

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Pr3+:LiYF4 在 900 nm 附近的可调谐连续波双波长激光操作

我们在此展示了 Pr ³⁺ :LiYF ₄晶体在 900 nm 光谱范围内的第一个可调谐连续波 (CW) 同时双波长激光操作，使用单个双折射滤波器 (BF) 在倍频光泵浦半导体激发下进行激光。通过调整BF的旋转角度，分别获得了工作在869和915 nm、894和915 nm、915和923 nm的连续双波长激光器。