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...

Full description

Saved in:
Bibliographic Details
Published in:Optics letters 2022-07, Vol.47 (14), p.3479-3482
Main Authors: Gao, Frank Y., Zhang, Zhuquan, Liu, Zi-Jie, Nelson, Keith A.
Format: Article
Language:English
Subjects:
Acetonitrile
Multidimensional methods
Rotational spectra
Spectroscopy
Waveforms
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.462624