Demonstration of a Quasi-optical Bridge for a 263 GHz TWT-enhanced EPR Spectrometer
A low-loss, quasi-optical bridge is built for a 263 GHz TWT-enhanced, pulsed EPR spectrometer. By enabling free-space propagation via quasi-optical components, the system minimizes signal attenuation and ensures robust isolation for the transmitter and receiver stages. Measurements show a total insertion loss below 3.5 dB from the TWT source to the sample resonator, with up to 35 dB of isolation. This configuration demonstrates efficient, high-power millimeter-wave transmission for advanced EPR/DNP applications.
Authors
- Neville C. Luhmann (ORCID: https://orcid.org/0000-0002-0613-2931)
- David Britt
- Shasha Qiu (ORCID: https://orcid.org/0009-0004-7758-2157)
- Paul A. Stucky (ORCID: https://orcid.org/0000-0001-8010-0332)
Institutions
- University of California, Davis (US)
Publication Details
- Published
- 2025-04-14
- DOI
- https://doi.org/10.1109/ivec63678.2025.11115257
- Primary Topic
- Electron Spin Resonance Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- National Institutes of Health
- Basic Energy Sciences