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Pressure-dependent terahertz time-domain spectroscopy

MetadataDetails
Publication Date2016-09-01
AuthorsW. Zhang, Daniel V. Nickel, Daniel M. Mittleman
InstitutionsBrown University, Rice University

We implemented pressure-dependent terahertz time-domain spectroscopy. Compared with traditional far-IR spectroscopy with a diamond anvil cell, we can measure at much lower frequencies, down to 0.1 THz, giving us access to many interesting dynamics. The pressure tuning range is from room pressure to 5 kpsi, while the temperature tuning range is from 77 to 473 K. With this large range of tuning parameters, we are able to map out phase diagrams of materials based on their THz spectrum. Pressure-dependent THz-TDS results for R-camphor are shown as an example.

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