0.395 THz Surface Wave Oscillator for DNP-NMR Applications

MacLachlan, Amy and Robertson, Craig and Cross, Adrian and Phelps, Alan (2021) 0.395 THz Surface Wave Oscillator for DNP-NMR Applications. In: 14th UK-Europe-China Workshop on Millimetre Waves and THz Technologies (UCMMT 2021), 2021-09-13 - 2021-09-15, UK VIRTUAL.

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The simulation and design of an oversized, two-dimensional, periodic surface lattice (2D PSL) interaction cavity used within a 0.395 THz, pulsed radiation source is presented. Powerful, pulsed radiation with good spectral purity is demonstrated. The device is well-suited for use in DNP-NMR spectroscopy and has numerous other applications due to the scalability of the interaction cavity allowing for radiation output at different frequencies. The device exploits the coupling of volume and surface fields in the 2D PSL interaction cavity to excite a single cavity eigenmode. The observed output power is 13.5kW and the efficiency of the device is 27%


MacLachlan, Amy ORCID logoORCID: https://orcid.org/0000-0002-8960-1683, Robertson, Craig ORCID logoORCID: https://orcid.org/0000-0002-3552-466X, Cross, Adrian ORCID logoORCID: https://orcid.org/0000-0001-7672-1283 and Phelps, Alan ORCID logoORCID: https://orcid.org/0000-0002-1100-1012;