Detail Information

Efficient terahertz oscillation using a half-period staggered grating resonator

Kwon O., Sattorov M.A., Min S.-H., Baek I.-K., Kim S., Bera A., Barik R.K., Bhattacharya R., Jeong J.-Y., Won J.-H., Park G.-S.
Japanese Journal of Applied Physics, 53(6), 066201(2014)
DOI: 10.7567/JJAP.53.066201

Abstract

A highly efficient terahertz (THz) radiation mechanism is studied with the use of strong interaction between convection electrons and a half-period phase-shifted grating resonator. The large fraction of the fundamental TE mode is longitudinally polarized, and it excites the intense plasma- terahertz wave coupling at the shallow grating, which enables highly efficient RF generation at a relatively low operating voltage. A particle-in-cell (PIC) simulation predicts that the half-period phase-staggered grating resonator generates 0.22THz wave with output power exceeding 100Wand interaction efficiency of more than 15% at a low beam acceleration voltage of 5.2 kV. © 2014 The Japan Society of Applied Physics.