Frequency-domain electron spin resonance spectroscopy using continuously frequency-tunable terahertz photomixers

被引：7
作者：
Ohmichi, Eiji [1 ]
Shoji, Yuto [1 ]
Takahashi, Hideyuki [1 ,2 ,3 ]
Ohta, Hitoshi [1 ,2 ]
机构：
[1] Kobe Univ, Grad Sch Sci, Nada Ku, 1-1 Rokkodai, Kobe, Hyogo 6578501, Japan
[2] Kobe Univ, Mol Photosci Res Ctr, Nada Ku, 1-1 Rokkodai, Kobe, Hyogo 6578501, Japan
[3] JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 3320012, Japan
来源：
APPLIED PHYSICS LETTERS | 2021年 / 119卷 / 16期
基金：
日本科学技术振兴机构;
关键词：
ANTIFERROMAGNETIC-RESONANCE; SPECTROMETER; STANDARD; BEHAVIOR; RANGE; MODE; DPPH; EPR; ESR;
D O I：
10.1063/5.0065649
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Frequency-domain electron spin resonance (FDESR) spectroscopy in the terahertz (THz) region using continuously tunable photomixers was demonstrated. Spectral resolution was greatly improved with the use of a pair of fiber stretchers. In this setup, the amplitude of the THz electric field was determined at each frequency by externally sweeping the optical path difference, resulting in a spectral resolution of about 1 MHz. With this technique, we observed narrow ESR spectra with a 20-MHz linewidth, enabling high-resolution FDESR spectroscopy in a broad frequency range. Published under an exclusive license by AIP Publishing.
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页数：5
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