Femtosecond superradiant emission in AlGaInAs quantum-well semiconductor laser structures.

Xia, M and Penty, RV and White, IH and Vasil'ev, PP (2012) Femtosecond superradiant emission in AlGaInAs quantum-well semiconductor laser structures. Opt Express, 20. pp. 8755-8760.

Abstract

Ultrashort superradiant pulse generation from a 1580 nm AlGaInAs multiple quantum-well (MQW) semiconductor structure has been experimentally demonstrated for the first time. Superradiance is confirmed by analyzing the evolution of the optical temporal waveforms and spectra. Superradiant trends and regimes are studied as a function of driving condition. An optical pulse train is obtained at 1580 nm wavelength, with pulse durations as short as 390 fs and pulse peak powers of 7.2 W.