Affiliation:
1. University of Hamburg
2. Chinese Academy of Sciences
3. Songshan Lake Materials Laboratory
Abstract
The generation of few-femtosecond pulses with high energy and tunable spectrum in the ultraviolet region is an ongoing challenge in ultrafast optics. Harnessing the cross-phase modulation between an intense near-infrared pulse and its third-harmonic, co-propagating in a gas-filled hollow-core fiber, we demonstrate spectral tuning, broadening, and temporal compression in the ultraviolet range. Ultraviolet pulses with negative chirp, leading to self-compression down to 6 fs during propagation in air, and energy >10µJ were characterized. This technique opens a way towards the realization of few-fs pulses with high energy, tunable over most of the ultraviolet range.
Funder
Deutsche Forschungsgemeinschaft
Deutsches Elektronen-Synchrotron
Cited by
6 articles.
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