Mid-infrared femtosecond pulses from a quantum cascade laser

P. Täschler; M. Bertrand; B. Schneider; M. Singleton; P. Jouy; F. Kapsalidis; M. Beck; J. Faist

doi:10.1117/12.2608076

4 March 2022 Mid-infrared femtosecond pulses from a quantum cascade laser

P. Täschler, M. Bertrand, B. Schneider, M. Singleton, P. Jouy, F. Kapsalidis, M. Beck, J. Faist

Proceedings Volume 11991, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXII; 1199106 (2022) https://doi.org/10.1117/12.2608076
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

In recent years, quantum cascade lasers have matured to become compact, powerful sources of coherent midinfrared light. Yet, the ultrafast carrier dynamics in these sources has so far restricted the formation of highintensity ultrashort pulses. In this work, we demonstrate the formation of ∼ 630 fs QCL pulses with a peak power of ∼ 4.3 W. We break the picosecond barrier in an approach similar to chirped pulse amplification, where we externally recompress the maximally chirped output of a quantum cascade laser frequency comb. Ultrashort pulse formation is confirmed with a novel asynchronous optical sampling technique. These results emphasise the potential of quantum cascade lasers also as sources for non-linear experiments in the mid-infrared.

Conference Presentation

Citation Download Citation

P. Täschler, M. Bertrand, B. Schneider, M. Singleton, P. Jouy, F. Kapsalidis, M. Beck, and J. Faist "Mid-infrared femtosecond pulses from a quantum cascade laser", Proc. SPIE 11991, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXII, 1199106 (4 March 2022); https://doi.org/10.1117/12.2608076

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