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Nonlinear compression of an ultrashort-pulse thulium-based fiber laser to sub-70 fs in Kagome photonic crystal fiber

2015; Optica Publishing Group; Volume: 40; Issue: 12 Linguagem: Inglês

10.1364/ol.40.002770

1539-4794

Martin Gebhardt, Christian Gaida, Steffen Hädrich, Fabian Stutzki, César Jáuregui, Jens Limpert, Andreas Tünnermann,

Photonic Crystal and Fiber Optics

Nonlinear pulse compression of ultrashort pulses is an established method for reducing the pulse duration and increasing the pulse peak power beyond the intrinsic limits of a given laser architecture. In this proof-of-principle experiment, we demonstrate nonlinear compression of the pulses emitted by a high-repetition-rate thulium-based fiber CPA system. The initial pulse duration of about 400 fs has been shortened to <70 fs with 19.7 μJ of pulse energy, which corresponds to about 200 MW of pulse peak power.