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Conference on Lasers and Electro-Optics

Information velocity in ultraslow and fast light media

Matthew S. Bigelow, Nick N. Lepeshkin, Robert W. Boyd

Published Jan 1, 2004• 0 citations
Publisher

Abstract

We consider the effect of large normal or anomalous dispersion on the information velocity. We also experimentally study how pulse shapes are distorted as the pulse bandwidth becomes comparable to the region of steep dispersion
DOI
10.1364/iqec.2004.imp1

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We show in theory that SBS slow- and fast-light can propagate in a cascaded system without group-velocity-dispersion (GVD) broadening and low gain broadening by use of dispersion compensation. The two GVD parameters in the normal and anomalous dispersion regions can be modulated to counteract so that we can get a zero-GVD-broadening pulse by using two broadband pumps with different powers and spectral widths. Using the method of dispersion compensation, the third-order dispersion (TOD) effect can also be canceled out simultaneously. Besides, the pulse compression occurs in the anomalous dispersion region, which contributes a low gain-broadening pulse. Therefore, this method could have the potential for different pump beam spectra.
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