Publications

We experimentally determine the density dependence of the transport lifetime (tt) obtained from low field Hall measurements and the quantum lifetime (tq) derived from analysis of the amplitude of S

A four-wave mixer model is presented for which exact analytic results can be obtained in a regime where the usual perturbation procedures no longer apply.

Two dimensional electron gas (2DEG) in a quantum well or an inversion layer, unlike an ordinary grounded metallic plane, does not completely screen an applied transverse electric field.

A high responsivity GaAs/AlGaAs quantum cascade detector is demonstrated at a wavelength of 15 mu m.

Summary form only given.

A quantum cascade (QC) laser with a heterogeneous cascade containing two substacks previously optimized to emit at 5.2 mum and 8.0 mum wavelengths, respectively, is presented.

Quantum cascade (QC) lasers with double metal-semiconductor waveguide resonators are reported for operating wavelengths of 19, 21, and 24 mum.

A quantum-cascade laser using a double-quantum-well graded superlattice as the active region is presented.

Quantum cascade (QC) lasers have recently been demonstrated with stacked, interdigitated or collaborative cascades.

Quantum cascade lasers have been fabricated with chalcogenide lateral waveguide claddings.