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13 March 2023 Single-shot time-domain spectrometers and THz digitizers using Diversity Electro-Optic Sampling (DEOS): principles and limitations
Eléonore Roussel, Christophe Szwaj, Clément Evain, Bernd Steffen, Christopher Gerth, Bahram Jalali, Serge Bielawski
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Proceedings Volume PC12420, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI; PC124200H (2023) https://doi.org/10.1117/12.2651884
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
There is an increasing need for techniques allowing a whole Terahertz spectrum (or a electric field time-evolution) to be recorded at each shot of a pulsed source. We review here the principles and performances of the recently introduced DEOS single-shot Time-Domain Spectroscopy method [1]. A key point of DEOS is a novel conceptual approach of a classic electro-optic detection method, that uses chirped laser pulse probes. This novel point of view led to a new type of design that allows a numerical reconstruction of the input THz signal, from a single-shot measurement, with unprecedented bandwidth and time-resolution. We present here the theoretical framework, experimental tests, as well as numerical investigations aiming at exploring the bandwidth and resolution limits of DEOS. [1] Roussel et al., Light Science & Applications 11, 14 (2022) https://doi.org/10.1038/s41377-021-00696-2
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Eléonore Roussel, Christophe Szwaj, Clément Evain, Bernd Steffen, Christopher Gerth, Bahram Jalali, and Serge Bielawski "Single-shot time-domain spectrometers and THz digitizers using Diversity Electro-Optic Sampling (DEOS): principles and limitations", Proc. SPIE PC12420, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI, PC124200H (13 March 2023); https://doi.org/10.1117/12.2651884
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KEYWORDS
Terahertz radiation
Electro optics
Spectrometers
Laser beam diagnostics
Light emitting diodes
Pulsed laser operation
Spectroscopy
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