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  3. All-PM coherent 2.05 µm thulium/holmium fiber frequency comb source at 100 MHz with up to 0.5 W average power and pulse duration down to 135 fs

All-PM coherent 2.05 µm thulium/holmium fiber frequency comb source at 100 MHz with up to 0.5 W average power and pulse duration down to 135 fs

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All-PM coherent 2.05 µm thulium/holmium fiber frequency comb source at 100 MHz with up to 0.5 W average power and pulse duration down to 135 fs

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  • Author: H. Hoogland, A. Thai, D. Sánchez, S. L. Cousin, M. Hemmer, M. Engelbrecht, J. Biegert, & R. Holzwarth
We report on a dual output all-PM fiber laser system running at 100 MHz repetition rate offering coherent broadband and narrowband pulses centered at 2.05 µm with a spectral FWHM bandwidth of 60 nm and 1.5 nm at up to 360 mW and 500 mW, respectively. The broadband pulses are compressed down to 135 fs. The multi-stage double-clad amplifier based on Tm/Ho codoping is seeded by a supercontinuum light source, spanning from around 1 µm up to 2.4 µm.

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