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We first demonstrate the laser performance of a compact 2.06-$\mu$ m Ho: YLF laser wing pumped by a fiber-coupled laser diode, which is insensitive to the polarization state of pump source. A maximum output power of 1.44 W, corresponding to a slope efficiency of 41.25%, is obtained. The optimized beam quality factor reaches 2.52 when the output power is about 1 W. Multi-peak laser spectra are observed...
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