Frequency-domain electron spin resonance spectroscopy using continuously frequency-tunable terahertz photomixers
- 18 October 2021
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 119 (16), 162404
- https://doi.org/10.1063/5.0065649
Abstract
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.Funding Information
- Japan Science and Technology Agency (JPMJSK1615)
- Amada Foundation
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