Two-dimensional Fourier transform spectroscopy of exciton-polaritons and their interactions

Abstract

Two-dimensional Fourier transform (2DFT) spectroscopy is a cutting-edge technique to investigate nonlinear many-body physics in semiconductor nanostructures. This paper reports an experimental and theoretical study of 2DFT on a high-quality GaAs-based semiconductor microcavity to gain an understanding of polariton self-interactions and polariton cross-interactions and their effects on the 2D spectra.