# Two-dimensional double-quantum spectroscopy: peak shapes as a sensitive probe of carrier interactions in quantum wells

@article{Tollerud2016TwodimensionalDS, title={Two-dimensional double-quantum spectroscopy: peak shapes as a sensitive probe of carrier interactions in quantum wells}, author={Jonathan O. Tollerud and Jeffrey A. Davis}, journal={Journal of The Optical Society of America B-optical Physics}, year={2016}, volume={33} }

We identify carrier scattering at densities below that which has previously been observed in semiconductor quantum wells. These effects are evident in the peak shapes of 2D double-quantum spectra, which change as a function of excitation density. At high excitation densities (>109 excitons/cm2), we observe untilted peaks similar to those reported in previous experiments. At low excitation densities (<108 excitons/cm2), we observe narrower tilted peaks. Using a simple simulation, we show that…

## 12 Citations

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