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Proceedings Paper • Open Access

Ultrafast gain dynamics in quantum cascade lasers: new coherent phenomena and their applications (Conference Presentation)
Author(s): Federico Capasso

Paper Abstract

Thanks to their ultrafast gain dynamics, a unique feature among semiconductor lasers, quantum cascade lasers exhibit strong coherent oscillations of the population inversion with concomitant formation of mode skipping frequency combs (harmonic state) and time dependent spatial hole burning leading to new microwave transmitters (laser-radios). Finally we show that the frequency comb formation in QCLs obeys a simple variational principle, that relies on the maximization of the laser output power.

Paper Details

Date Published: 17 March 2020
Proc. SPIE 11301, Novel In-Plane Semiconductor Lasers XIX, 1130115 (17 March 2020); doi: 10.1117/12.2548650
Show Author Affiliations
Federico Capasso, Harvard John A. Paulson School of Engineering and Applied Sciences (United States)

Published in SPIE Proceedings Vol. 11301:
Novel In-Plane Semiconductor Lasers XIX
Alexey A. Belyanin; Peter M. Smowton, Editor(s)

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