Powerful radiation source at 0.35 THz based on overmoded, periodic cavities

MacLachlan, Amy Jane and Robertson, Craig and Cross, Adrian and Ronald, Kevin and Phelps, Alan; (2021) Powerful radiation source at 0.35 THz based on overmoded, periodic cavities. In: International Vacuum Electronics Conference. IEEE, NLD. (In Press)

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We present the design of a cylindrical, two-dimensional periodic surface lattice structure intended for use as the interaction region of an electron beam driven, pulsed Cherenkov source. We demonstrate production of high peak power radiation output at 0.35 THz. The interaction region is oversized and mode selection is achieved by the coupling of volume and surface fields to form a coupled cavity eigenmode. The work is also applicable to different frequencies, and the diameter of the cavity can be increased to achieve higher output powers.


MacLachlan, Amy Jane 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, Ronald, Kevin ORCID logoORCID: https://orcid.org/0000-0002-8585-0746 and Phelps, Alan ORCID logoORCID: https://orcid.org/0000-0002-1100-1012;