Band-edge absorption characteristics of semi-insulating indium phosphide under unified Franz-Keldysh and Einstein models

Dynamical Franz-Keldysh effect.

Excitonic Dynamical Franz-Keldysh Effect

Photorefractive quantum wells: transverse Franz-Keldysh geometry

The photorefractive properties of semi-insulating AlGaAs-GaAs multiple quantum wells are described for the transverse Franz-Keldysh geometry with the electric field in the plane of the quantum wells. Combining the strong electroabsorption of quantum-confined excitons with the high resistivity of semi-insulating quantum wells yields large nonlinear optical sensitivities. The photorefractive quan...

Exciton ionization, Franz-Keldysh, and Stark effects in carbon nanotubes.

We calculate the optical properties of carbon nanotubes in an external static electric field directed along the tube axis. We predict strong Franz-Keldysh oscillations in the first and second band-to-band absorption peaks, quadratic Stark effect of the first two excitons, and the field dependence of the bound exciton ionization rate for a wide range of tube chiralities. We find that the phonon-...

Subpicosecond electrical pulse generation by edge illumination of silicon and indium phosphide photoconductive switches

Using a femtosecond pulsed laser, ultrafast electrical pulses were optoelectronically generated on silicon and indium phosphide by edge illumination of a coplanar transmission line. Backing up theory with experiment, we demonstrate that this pulse-generation method is material independent, thus providing a powerful tool for broadband characterization of devices made on a wide range of semicondu...