Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1594672 | Solid State Communications | 2009 | 6 Pages |
Abstract
We investigate electronic coupling in asymmetric semiconductor double quantum wells using a new spectroscopy method, optical two-dimensional Fourier transform (2D-FT) spectroscopy. Measurements on two samples with different barrier thicknesses show drastically different 2D-FT spectra. We compare these measurements to conventional one-dimensional four-wave-mixing measurements, highlighting the unique advantages of the 2D-FT spectroscopy. An oscillatory behavior in the intensity of the cross peaks as a function of the mixing time is observed. This oscillation is attributed to interference between different quantum mechanical pathways, and its features are determined by the non-radiative Raman coherence between dipole-forbidden states.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Xiaoqin Li, Tianhao Zhang, Shaul Mukamel, Richard P. Mirin, Steven T. Cundiff,