Abstract
Recent studies of the transient behavior of absorption saturation in low temperature Multiple Quantum Wells (MQW) samples have revealed a surprisingly fast recovery of absorption (within 10 ps at 15 K) after excitation by intense ultrashort light pulses1. This has been attributed to the effect of the large stimulated recombination rate caused by amplified spontaneous luminescence guided along the MQW structure, as confirmed by streak camera observations of the edge-emitted luminescence1, and by measurements of time-resolved luminescence spectra with subpicosecond resolution2. This effect could be used to increase the speed of optical gates based on absorption saturation or carrier-induced nonlinear refraction, but a more complete understanding of the mechanisms involved is clearly needed in order to evaluate the interest of this approach.
© 1988 Optical Society of America
PDF ArticleMore Like This
Y. J. Chen and G. J. Sonek
MA5 Integrated and Guided Wave Optics (IGWO) 1988
B. Sermage, K. Satzke, C. Dumas, N. Roy, B. Deveaud, F. Clérot, and D. S. Katzer
TUC27 International Conference on Ultrafast Phenomena (UP) 1992
Duncan G. Steel, Hailin Wang, M. D. Webb, Ming Jiang, and S. T. Cundiff
CWL3 Conference on Lasers and Electro-Optics (CLEO:S&I) 1991