PHOTON DRAG EFFECT IN TUNNEL-COUPLED QUANTUM-WELLS

Resonant photon drag current caused by transfer of momentum from absor bed far-infrared photons to electrons is calculated for transitions be tween coupled states in double quantum wells with nonsymmetric scatter ing. This system is found to exhibit both the reversal of current and complicated dependencies of the current on the level splitting and non symmetry of scattering. Numerical estimate demonstrates a possibility of application of-this effect both for studies of the momentum-transfe r kinetics and for detection of ultrafast pulses in the submillimeter spectral region.