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22 February 2017 High-average power 4 GW pulses with sub-8 optical cycles from a Tm-doped fiber laser driven nonlinear pulse compression stage
Martin Gebhardt, Christian Gaida, Fabian Stutzki, Steffen Hädrich, Cesar Jauregui, Jens Limpert, Andreas Tünnermann
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Proceedings Volume 10083, Fiber Lasers XIV: Technology and Systems; 100830B (2017) https://doi.org/10.1117/12.2251833
Event: SPIE LASE, 2017, San Francisco, California, United States
Abstract
Thulium-doped fiber lasers are an attractive concept for the generation of mid-infrared (mid-IR) ultrashort pulses around 2 μm wavelength with an unprecedented average power. To date, these systems deliver >150 W of average power and GW-class pulse peak powers with output pulse durations of a few hundreds of fs. As some applications can greatly benefit from even shorter pulse durations, the spectral broadening and subsequent temporal pulse compression can be a key enabling technology for high average power few-cycle laser sources around 2 μm wavelength. In this contribution we demonstrate the nonlinear compression of ultrashort pulses from a high repetition rate Tm-doped fiber laser using a nitrogen gas-filled hollow capillary. Pulses with 4 GW peak power, 46 fs FWHM duration at an average power of 15.4 W have been achieved. This is, to the best of our knowledge, the first 2 μm laser delivering intense, GW-pulses with sub 50-fs pulse duration and an average power of >10 W. Based on this result, we discuss the next steps towards a 100 W-level, GW-class few-cycle mid-IR laser.
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Martin Gebhardt, Christian Gaida, Fabian Stutzki, Steffen Hädrich, Cesar Jauregui, Jens Limpert, and Andreas Tünnermann "High-average power 4 GW pulses with sub-8 optical cycles from a Tm-doped fiber laser driven nonlinear pulse compression stage", Proc. SPIE 10083, Fiber Lasers XIV: Technology and Systems, 100830B (22 February 2017); https://doi.org/10.1117/12.2251833
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KEYWORDS
Fiber lasers
Mid-IR
Nitrogen
Pulsed laser operation
Ultrafast phenomena
Capillaries
Laser sources
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