1. 8.7-W average power, in-band pumped femtosecond Ho:CALGO laser at 2.1 um
- Author
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Weichao Yao, Yicheng Wang, Sergei Tomilov, Martin Hoffmann, Shahwar Ahmed, Christoph Liebald, Daniel Rytz, Mark Peltz, Volker Wesemann, and Clara J. Saraceno
- Subjects
FOS: Physical sciences ,Atomic and Molecular Physics, and Optics ,Optics (physics.optics) ,Physics - Optics - Abstract
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., 9 pages, 5 figures
- Published
- 2022