High-speed two-dimensional terahertz spectroscopy with echelon-based shot-to-shot balanced detection

By using a reflective-echelon-based electro-optic sampling technique and a fast detector, we develop a two-dimensional terahertz (THz) spectrometer capable of shot-to-shot balanced readout of THz waveforms at a full 1-kHz repetition rate. To demonstrate the capabilities of this new detection scheme...

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Veröffentlicht in:	Optics letters 2022-07, Vol.47 (14), p.3479-3482
Hauptverfasser:	Gao, Frank Y., Zhang, Zhuquan, Liu, Zi-Jie, Nelson, Keith A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Acetonitrile Multidimensional methods Rotational spectra Spectroscopy Waveforms
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container_end_page	3482
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container_title	Optics letters
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creator	Gao, Frank Y. Zhang, Zhuquan Liu, Zi-Jie Nelson, Keith A.
description	By using a reflective-echelon-based electro-optic sampling technique and a fast detector, we develop a two-dimensional terahertz (THz) spectrometer capable of shot-to-shot balanced readout of THz waveforms at a full 1-kHz repetition rate. To demonstrate the capabilities of this new detection scheme for high-throughput applications, we use gas-phase acetonitrile as a model system to acquire two-dimensional THz rotational spectra. The results show a two-order-of-magnitude speedup in the acquisition of multidimensional THz spectra when compared to conventional delay-scan methods while maintaining accurate retrieval of the nonlinear THz signal. Our report presents a feasible solution for bringing the technique of multidimensional THz spectroscopy into widespread practice.
doi_str_mv	10.1364/OL.462624
format	Article
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subjects	Acetonitrile Multidimensional methods Rotational spectra Spectroscopy Waveforms
title	High-speed two-dimensional terahertz spectroscopy with echelon-based shot-to-shot balanced detection
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