1998/03/30 by C. Ellmers, A. Girndt, Martin R. Hofmann +7 · 2 citations
Physics and Astronomy · Computer Science · Engineering · #Semiconductor Quantum Structures and Devices #Neural Networks and Reservoir Computing #Photonic and Optical Devices
paper · doi:10.1063/1.121140
openalex publication_date 1998/03/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11
The gain spectrum of a (GaIn)As/(AlGa)As single-quantum-well laser diode is precisely measured at various currents in order to quantitatively check the predictions of a microscopic model. The theory includes carrier—carrier and carrier—LO-phonon collisions which lead to optical dephasing and screening of the Coulomb interaction. The measurements are based on a transmission technique using the broad spectrum of a 10 fs Ti:sapphire laser to obtain sufficient signal to noise ratio over a wide spectral range. We obtain excellent agreement between theoretical and experimental gain spectra and thus can clearly demonstrate the predictive capability of our microscopic model.