Wavelength-stabilized figure-of-9 thulium-doped all-fiber laser emitting 560 fs pulses
We demonstrate a figure-of-9 all-fiber thulium-doped laser (TDFL) that generates 560 fs long pulses at 1948 nm wavelength. In order to achieve self-starting passive mode-locking, we utilize an in-fiber Faraday rotator to induce a nonreciprocal phase shift. To the best of our knowledge, this is the first all-fiber TDFL that combines an artificial saturable absorber (SA) with a chirped fiber Bragg grating (CFBG) as a wavelength-selective reflector. This cavity design is an excellent candidate to pump nonlinear processes such as supercontinuum and frequency comb generation since it does not require any SA material that degrades over time for mode-locking and could be made wavelength-tuneable via the CFBG.
WOS:001128957400001
2024-02-01
34
2
025101
REVIEWED
EPFL
Funder | Grant Number |
European Commission (H2020 Marie Sklodowska-Curie Actions | 861 152 |
German Research Council | 462/18-1 |
German Federal Ministry for Economic Affairs and Climate Action | ZF4309605DF9 |
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