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Conference on Lasers and Electro-Optics

Pulse delay and speed-up of ultra fast pulses in an absorbing quantum well medium

Per Lunnemann, Mike van der Poel, Kresten Yvind, Jesper Mørk

Published May 1, 2008• 1 citation
Publisher

Abstract

Slow down and speed-up of 180 fs pulses in an absorbing semiconductor beyond the existing models is observed. Cascading gain and absorbing sections give us significant temporal pulse shifting at almost constant output pulse energy.
DOI
10.1109/cleo.2008.4551863

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•Oct 31, 2010•0 citations
Time shifting of optical pulses with duration in the range from 100 fs to a few ps represents one extreme of slow light, where THz bandwidth for the slow down or speed up is necessary. The physics of the time shifting of such very short pulses involves the gain saturation of the optical medium and is different from the slow-light mechanisms responsible for time shifting of pulses of narrower bandwidth. Experimental and theoretical results with semiconductor components are presented, emphasizing the physics as well as the limitations imposed by the dynamical processes.
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