Journal
OPTICS EXPRESS
Volume 31, Issue 11, Pages 17175-17184Publisher
Optica Publishing Group
DOI: 10.1364/OE.486447
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We demonstrated a compact and efficient Ho:YAG slab laser intra-cavity pumped by a Tm:YLF slab laser for the first time. The maximum power of 32.1 W with an optical-to-optical efficiency of 52.8% was obtained in the Tm:YLF laser operation. In the intra-cavity pumped Ho:YAG laser operation, an output power of 12.7 W at 2122 nm was obtained, with beam quality factors M2 of 1.22 and 1.11 in the vertical and horizontal directions, respectively. The RMS instability was measured to be lower than 0.1%. To the best of our knowledge, this was the maximum power for the Tm-doped laser intra-cavity pumped Ho-doped laser with near-diffraction-limited beam quality.
We demonstrated a compact and efficient Ho:YAG slab laser intra-cavity pumped by a Tm:YLF slab laser for the first time. In the Tm:YLF laser operation, the maximum power of 32.1 W with optical-to-optical efficiency of 52.8% was obtained. In the intra-cavity pumped Ho:YAG laser operation, the output power of 12.7 W at 2122 nm was obtained. The beam quality factors M2 in the vertical and horizontal directions were 1.22 and 1.11, respectively. The RMS instability was measured to be lower than 0.1%. To the best of our knowledge, this was the maximum power for the Tm-doped laser intra-cavity pumped Ho-doped laser with near-diffraction-limited beam quality.
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