Compressively strained 2 m GaInAsSb quantum well lasers with large valence band offsets and broadened waveguides display a record characteristic temperature, T0=140 °K for a 4-QW laser and a differential efficiency of 0.74 for a pulsed 2-QW device. The T0 of these antimonide lasers is 65% more than that reported for phosphide-based lasers operating at 2 m wavelength. A room-temperature threshol...

Articles you may be interested in InAs/AlSb widely tunable external cavity quantum cascade laser around 3.2 μm Room temperature single-mode terahertz sources based on intracavity difference-frequency generation in quantum cascade lasers Appl. Terahertz sources based on intracavity frequency mixing in mid-infrared quantum cascade lasers with passive nonlinear sections Appl. Surface-emitting tera...

A model for quantitative analysis of microdisk laser emission spectra is presented. Conformal mapping is used to determine radial and azimuthal eigenvalues, eigenvectors, and cavity Q corresponding to leaky optical resonances in an optically transparent dielectric disk. The effects of gain and loss in a microcavity active medium are also included in the model. Our results compare well with expe...

The effect of doping and temperature on the gain characteristics of GaInNAs/GaAs quantum well lasers emitting at 1.3 μm are investigated. The unusual band structure of dilute nitrides is analyzed using the band-anti-crossing model (BAC), effective mass and simple approximate expressions for carrier density and optical gain. A significant reduction in the transparency carrier density by p-type d...

For the first time a detailed study of hybrid mode-locking in two-section InAs/InP quantum dot Fabry-Pérot-type lasers is presented. The output pulses have a typical upchirp of approximately 8 ps/nm, leading to very elongated pulses. The mechanism leading to this typical pulse shape and the phase noise is investigated by detailed radio-frequency and optical spectral studies as well as time-doma...