Terahertz spectroscopy and imaging up to 20 THz based on organic crystals

Carolina Medrano; Tobias Bach; Peter Günter; Uros Puc; Michael Auer; Mojca Jazbinsek

doi:10.1117/12.3000136

11 March 2024 Terahertz spectroscopy and imaging up to 20 THz based on organic crystals

Carolina Medrano, Tobias Bach, Peter Günter, Uros Puc, Michael Auer, Mojca Jazbinsek

Proceedings Volume 12885, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVII; 1288509 (2024) https://doi.org/10.1117/12.3000136
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

We present THz time-domain spectroscopy and imaging covering a wide frequency range up to 20 THz. Our approach uses highly efficient organic nonlinear optical crystals (DSTMS, OH1) and a compact femtosecond pump laser (1560 nm) with MHz repetition rate and ultrashort pulse width (<40 fs). By optimizing the optical geometry, we achieve high SNR (>80 dB at 4 THz, >70 dB at 10 THz). Our theoretical model agrees well with experiments. We validate our system by obtaining high-resolution THz spectra of water vapor and various solid substances. Additionally, we present THz imaging with sub-50 μm spatial and sub-10 fs temporal resolution.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Carolina Medrano, Tobias Bach, Peter Günter, Uros Puc, Michael Auer, and Mojca Jazbinsek "Terahertz spectroscopy and imaging up to 20 THz based on organic crystals", Proc. SPIE 12885, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVII, 1288509 (11 March 2024); https://doi.org/10.1117/12.3000136

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