Dark Pulse Formation in a Quantum Dot Laser

Published

July 1, 2001

Author(s)

Jonathan Zimmerman, Steven T. Cundiff, G von Plessen, J Feldmann, M Arzberger, J Bohm, M C. Amann, G Abstreiter

Abstract

The laser emission of an InAS/GaAs quantum dot laser after injection of a non-resonant optical pulse is time resolved using femtosecond upconversion. The injected pulse burns a spectral hole into the gain spectrum that leads to an ultrafast redistribution of carriers away from the lasing wavelength, thereby generating a spatial domain of reduced laser intensity. This domain propagates through the laser, is reflected at the facets, and thus repeats periodically in the output of the quantum dot laser, forming a train of dark pulses. As a slower response to the optically induced perturbation, gigahertz-frequency relaxation oscillations are observed.

Citation

Applied Physics Letters

Volume

79

Pub Type

Journals

Keywords

laser, quantum dot, semiconductor, ultrafast

Citation

Zimmerman, J. , Cundiff, S. , von Plessen, G. , Feldmann, J. , Arzberger, M. , Bohm, J. , Amann, M. and Abstreiter, G. (2001), Dark Pulse Formation in a Quantum Dot Laser, Applied Physics Letters (Accessed October 22, 2025)