Abstract
We report a high-beam-quality stable Tm:YLF laser with a single rod crystal. By optimizing the output coupler parameters and regulating an F–P etalon combined with the VBG, we obtain a maximum continuous-wave output power exceeding 15Wwith a wavelength of 1,908.2 nm and a narrow linewidth of 0.18 nm, corresponding to a slope efficiency of 39.4% and an optical-to-optical conversion efficiency of 34.6%; the beam quality factor M2 is less than 1.4 at the maximum output power.
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