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Proceedings Paper

Superradiant generation of femtosecond pulses in low-dimensional semiconductor heterostructures
Author(s): A. A. Belyanin; V. V. Kocharovsky; Vl. V. Kocharovsky; N. G. Kalugin
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Paper Abstract

A new type of accessible source of ultrashort optical pulses, based on the phenomenon of collective coherent recomination (superfluorescence) of electrons and holes in semiconductor heterostructures is proposed. The novel regime of an ultrafast operation of quantum-well semiconductor lasers with a low-Q cavity of length approximately 30 $min 100(mu) is analyzed, in which a quasiperiodic sequence of superradiant pulses of duration up to 30 fs and peak intensity exceeding 100 MW/cm2 is emitted under continuous pumping, with typical current density of order 104 A/cm2. It is shown that the same process of femtosecond superradiant recombination can be used for the room-temperature generation of optical coherent emission in multiple quantum-well or quantum dot GeSi/Ge structures, employing direct radiative transitions from the T-valley.

Paper Details

Date Published: 25 February 1999
PDF: 9 pages
Proc. SPIE 3736, ICONO '98: Quantum Optics, Interference Phenomena in Atomic Systems, and High-Precision Measurements, (25 February 1999);
Show Author Affiliations
A. A. Belyanin, Institute of Applied Physics (United States)
V. V. Kocharovsky, Institute of Applied Physics (Russia)
Vl. V. Kocharovsky, Institute of Applied Physics (Russia)
N. G. Kalugin, Institute for Physics of Microstructures (Russia)

Published in SPIE Proceedings Vol. 3736:
ICONO '98: Quantum Optics, Interference Phenomena in Atomic Systems, and High-Precision Measurements
Anatoli V. Andreev; Sergei N. Bagayev; Anatoliy S. Chirkin; Vladimir I. Denisov, Editor(s)

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