Picosecond pulses from an actively mode-locked quantum cascade laser (Conference Presentation)

Benedikt Schwarz; Johannes Hillbrand; Marco Piccardo; Aaron Maxwell Andrews; Hermann Detz; Harald Schneider; Gottfried Strasser; Federico Capasso

doi:10.1117/12.2546465

10 March 2020 Picosecond pulses from an actively mode-locked quantum cascade laser (Conference Presentation)

Benedikt Schwarz, Johannes Hillbrand, Marco Piccardo, Aaron Maxwell Andrews, Hermann Detz, Harald Schneider, Gottfried Strasser, Federico Capasso

Author Affiliations +

Proceedings Volume 11288, Quantum Sensing and Nano Electronics and Photonics XVII; 112881O (2020) https://doi.org/10.1117/12.2546465
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

The generation of short pulses with quantum cascade lasers (QCLs) remains challenging to date due to their ultrafast gain dynamics. Here, we report on active mode-locking of mid-infrared QCLs. For the first time we show, that picosecond pulses can be generated also at room-temperature using high-performance QCL material. Mounted epi-up, the QCLs emit a train of pulses as short as a 7ps with an average power of 100mW. The nonlinear autocorrelation shows reveals the famous 8:1 ratio, which proves unambiguously that the QCL operates in the mode-locked regime. This result is further verified using the beatnote spectroscopy technique SWITS.

Conference Presentation

Citation Download Citation

Benedikt Schwarz, Johannes Hillbrand, Marco Piccardo, Aaron Maxwell Andrews, Hermann Detz, Harald Schneider, Gottfried Strasser, and Federico Capasso "Picosecond pulses from an actively mode-locked quantum cascade laser (Conference Presentation)", Proc. SPIE 11288, Quantum Sensing and Nano Electronics and Photonics XVII, 112881O (10 March 2020); https://doi.org/10.1117/12.2546465

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