Drag current of electrons in a semiconductor superlattice by intraband absorption of electromagnetic wave

The photon-drag effect by intraband absorption of the electromagnetic wave in superlattices is considered. The multiphoton drag in the superlattices must be taken into account under the conditions a = eEd/(h) over bar greater than or equal to 1. The numerical analysis shows that the drag current decreases non monotonously with the growth of a. The quasiclassical approximation in the case of high intensity of electromagnetic wave leads to the saturation of drag current with the field increase, whereas in the quantum case the drag current first increases and then decreases.