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arXiv · 2305.12245

Bloch-Wave Interferometry of Driven Quasiparticles in Bulk GaAs

Seamus D. O'Hara·Joseph B. Costello·Qile Wu·Ken West·Loren Pfeiffer·Mark S. Sherwin
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Abstract

We report that the polarizations of sidebands emitted from bulk gallium arsenide (GaAs) driven by a strong terahertz (THz) laser while probed with a weak near-infrared laser can be viewed as interferograms from a Michelson-like interferometer for Bloch waves. A simple analytical model is introduced to calculate the difference in quantum mechanical phases accumulated by Bloch waves associated with electron-heavy hole and electron-light hole pairs in their respective interferometer arms. The measured and calculated spectra are in good quantitative agreement, including scaling with THz field strength. Our results indicate a simple way to extract material parameters in future experiments

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Seamus D. O'Hara, Joseph B. Costello, Qile Wu, Ken West, Loren Pfeiffer, Mark S. Sherwin. 2023-05-20. Bloch-Wave Interferometry of Driven Quasiparticles in Bulk GaAs. https://arxiv.org/abs/2305.12245

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