Towards single-pulse terahertz spectroscopy at MHz rates

Couture N, Lippl M, Cui W, Ostic R, Fandio DJJ, Yalavarthi EK, Vishnuradhan A, Gamouras A, Joly NY, Menard JM (2023)

Publication Type: Conference contribution

Publication year: 2023

Publisher: IEEE Computer Society

Conference Proceedings Title: International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz

Event location: Montreal, QC, CAN

ISBN: 9798350336603

DOI: 10.1109/IRMMW-THz57677.2023.10298917

Abstract

We perform single-pulse time-resolved THz detection at repetition rates up to 1.1 MHz with a table-top system. Our detection scheme combines electro-optic sampling of THz pulses with spectral encoding onto a chirped near-infrared pulse, followed by time-stretch spectroscopy to monitor the oscillating electric field of each THz pulse. We demonstrate the concept by monitoring cumulative carrier injection dynamics in silicon at 50 kHz until a saturation density is reached and investigate signal-to-noise ratio at different repetition rates. This technique paves the way towards fundamental research on fast and non-reproducible phenomena requiring real-time monitoring as well as industrial applications requiring fast data acquisition for non-invasive quality control.

Involved external institutions

University of Ottawa CA Canada (CA) National Research Council / Conseil national de recherches Canada CA Canada (CA)

How to cite

APA:

Couture, N., Lippl, M., Cui, W., Ostic, R., Fandio, D.J.J., Yalavarthi, E.K.,... Menard, J.M. (2023). Towards single-pulse terahertz spectroscopy at MHz rates. In International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz. Montreal, QC, CAN: IEEE Computer Society.

MLA:

Couture, Nicolas, et al. "Towards single-pulse terahertz spectroscopy at MHz rates." Proceedings of the 48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023, Montreal, QC, CAN IEEE Computer Society, 2023.

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