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Conferences > UEO > 1999 > UFB > UFB4

Coupled carrier-photon dynamics in gain clamped semiconductor optical amplifiers: Dark pulse propagation

P. E. Selbmann, T. P. Hessler, J. L. Pleumeekers, M.-A. Dupertuis, B. Deveaud, B. Dagens, and J.-Y. Emery

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Abstract

We have performed ultrafast cross gain modulation experiments on a gain clamped semiconductor amplifier. Time-resolved observation of the lasing mode intensity after excitation with a strong, detuned pump pulse of 150 fs duration reveals the instantaneous formation of a dark pulse that repeats itself with a period given by the cavity round- trip time. A simultaneously measured cw probe signal at gain maximum shows pronounced relaxation oscillations. The experimental results are in reasonable agreement with numerical simulations.

© 1999 Optical Society of America

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