The momentum-resolved and time-resolved two-color optical coherence absorption spectrum in the scattering process

TL;DR

This paper demonstrates that the two-color optical coherence absorption spectrum (QUIC-AB) can be used to detect and analyze the amplitude, direction, and scattering details of electron currents in GaAs quantum wells in real time.

Contribution

It introduces a novel application of QUIC-AB for real-time, momentum-resolved detection of scattering currents and their properties in semiconductor quantum wells.

Findings

QUIC-AB depends on electron current amplitude and direction

Real-time detection of scattering current distribution is possible

Phase shift and scattering potential details can be determined

Abstract

The two-color optical coherence absorption spectrum (QUIC-AB) of GaAs quantum well in the presence of a charge current is investigated. We find that the QUIC-AB depends strongly not only on the amplitude of the electron current but also on the direction of the electron current. Thus, the amplitude and the angular distribution of scattering current in the scatter process can be detected directly in real time with the QUIC-AB. The phase shift of scattered waves and the details of the scattering potential can also be determined.