Stable Mode‐Locked Pulses from Mid‐Infrared Quantum Cascade Lasers

Wang, C. Y.; Kuznetsova, Lyuba; Diehl, Laurent; Kärtner, Franz; Belkin, Mikhail; Schneider, Harald; Liu, H. C.; Capasso, Federico

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Stable Mode‐Locked Pulses from Mid‐Infrared Quantum Cascade Lasers

Wang, C. Y.; Kuznetsova, L.; Diehl, L.; Kärtner, F.; Belkin, M.; Schneider, H.; Liu, H. C.; Capasso, F.

Abstract

We report direct evidence of active mode‐locking of quantum cascade lasers from second‐order interferometric autocorrelation measurements with a non‐linear quantum well infrared photodetector. A FWHM of 3ps was deduced for the stable train of pulses.

Keywords: quantum cascade laser; QCL; modelocking; QWIP; autocorrelation

Lecture (Conference)
Conference on Lasers and Electro-Optics, Quantum Electronics and Laser Science Conference, 04.-09.05.2008, San Jose, United States

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