8.7-W average power, in-band pumped femtosecond Ho:CALGO laser at 2.1 um

We report on an in-band pumped SESAM mode-locked Ho:CALGO bulk laser with a record-high average power of 8.7 W and an optical-to-optical efficiency of 38.2% at a central wavelength of 2.1 um. At this power level, the bulk laser generates pulses with a duration of 369 fs at 84.4-MHz repetition rate,...

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Veröffentlicht in:arXiv.org 2022-07
Hauptverfasser: Yao, Weichao, Wang, Yicheng, Tomilov, Sergei, Hoffmann, Martin, Sharhwar Ahmed, Liebald, Christoph, Rytz, Daniel, Peltz, Mark, Wesemann, Volker, Saraceno, Clara J
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Sprache:eng
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Zusammenfassung:We report on an in-band pumped SESAM mode-locked Ho:CALGO bulk laser with a record-high average power of 8.7 W and an optical-to-optical efficiency of 38.2% at a central wavelength of 2.1 um. At this power level, the bulk laser generates pulses with a duration of 369 fs at 84.4-MHz repetition rate, corresponding to a pulse energy of 103 nJ and a peak power of 246 kW. To the best of our knowledge, this is the highest average power and pulse energy directly generated from a mode-locked bulk laser in the 2-3 um wavelength region. Our current results indicate that Ho:CALGO is a competitive candidate for average power scaling of 2 um femtosecond lasers.
ISSN:2331-8422
DOI:10.48550/arxiv.2207.11516