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physics.optics2026
Room-temperature THz photon detection via nonlinear upconversion with 2% full-system efficiency
Aswin Vishnuradhan, Wei Cui, Hesam Heydarian +5
Sensitive detection of terahertz (THz) radiation is fundamental to progress in spectroscopy, advanced wireless communication, and the realization of emerging quantum technologies.…
physics.optics2026
Broadband THz spectroscopy system beyond 25 THz using BNA crystals and a tunable single-ring-fiber compressor
Wei Cui, Aswin Vishnuradhan, Markus Lippl +4
We present a terahertz (THz) time-domain spectroscopy (THz-TDS) system which accesses a broadband spectrum, efficiently covering the so-called "new THz gap" between 5 and 15 THz an…