Aaron Wade

Radiative quantum efficiency in an InAs/AlSb intersubband transition

The quantum efficiency of an electroluminescent intersubband emitter based on

Electron Scattering Spectroscopy by High Magnetic Field in Mid‐Infrared Quantum Cascade Lasers

mathrm{In}mathrm{As}∕mathrm{Al}mathrm{Sb}

Quantum efficiency of a 2-level InAs/AlSb quantum cascade structure

has been measured as a function of the magnetic field up to

Electron scattering spectroscopy by a high magnetic field in quantum cascade lasers

20phantom{rule{0.3em}{0ex}}mathrm{T}

High temperature, magnetic field assisted (sub)THz quantum cascade laser

. Two series of oscillations periodic in

Magnetic Field Assisted sub-THz Quantum Cascade Lasers

1∕B

Magnetic field controlled sub-THz emission in Quantum Cascade Lasers

are observed, corresponding to the elastic and inelastic scattering of electrons of the upper state of the radiative transitions. Experimental results are accurately reproduced by a calculation of the excited-state lifetime as a function of the applied magnetic field. The interpretation of these data gives an exact measure of the relative weight of the scattering mechanisms and allows the extraction of material parameters such as the energy-dependent electron effective mass and the optical phonon energy.

Intersubband magnetophonon resonance in InAs/AlSb quantum cascade structures.

We present an experimental and theoretical study of mid infrared quantum cascade lasers submitted to a strong magnetic field along their growth direction. The emitted power shows strong oscillations as a function of the magnetic field, due to a modulation of the excite state lifetime. The analysis of these oscillations allows us to estimate the contribution of the elastic and inelastic scattering to the electron lifetime.

Effects of high magnetic fields on the scattering rates of GaAs/AlGaAs and GaInAs/AlInAs quantum cascade lasers

The quantum efficiency of an electroluminescent intersubband emitter based on InAs/AlSb has been measured as a function of the magnetic field up to 20T. Two series of oscillations periodic in 1/B are observed, corresponding to the elastic and inelastic scattering of electrons of the upper state of the radiative transitions. Experimental results are accurately reproduced by a calculation of the excited state lifetime as a function of the applied magnetic field. The interpretation of these data gives an exact measure of the relative weight of the scattering mechanisms and allows the extraction of material parameters such as the energy dependent electron effective mass and the optical phonon energy.