High-Resolution Frequency-Domain Terahertz Spectroscopy and its Application to Electron Paramagnetic Resonance

被引：1
|
作者：
Shoji, Yuto [1 ]
Ohmichi, Eiji [1 ]
Takahashi, Hideyuki [2 ,3 ]
Ohta, Hitoshi [2 ]
机构：
[1] Kobe Univ, Grad Sch Sci, Nada Ku, 1-1 Rokkodai Cho, Kobe, Hyogo 6578501, Japan
[2] Kobe Univ, Mol Photosci Res Ctr, Nada Ku, 1-1 Rokkodai Cho, Kobe, Hyogo 6578501, Japan
[3] JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 3320012, Japan
来源：
2021 46TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ) | 2021年
关键词：
D O I：
10.1109/IRMMW-THz50926.2021.9567312
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Frequency-domain terahertz (THz) spectroscopy using a continuously tunable photomixer is a powerful analytical technique, offering unique advantages such as high frequency resolution. Here, we report an improved method to increase the spectral resolution using a pair of fiber stretchers. In this method, the amplitude of transmitted THz waves was determined at each frequency by modulating the optical path difference. As a result, the spectral resolution of about 1 MHz was achieved in this study. We applied this technique to frequency-domain electron paramagnetic resonance (EPR) spectroscopy, and successfully observed EPR spectra with a 20-MHz line width.
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页数：2
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