论文信息 - Highly Overmoded MM-wave Oscillator Experiments

Highly Overmoded MM-wave Oscillator Experiments

Overmoded oscillator research has been an active area of interest at the University of Strathclyde for several years. Interaction structures based on complex electrodynamic structures can facilitate higher powers from overmoded mm-wave sources. The gain media used can be vacuum electronic, or condensed matter. The present work reports on the most recent experimental results using a vacuum electronic overmoded source in W-band (75–110 GHz). A two dimensional cylindrical slow wave interaction region is excited by an annular electron beam. Whereas in conventional sources the transverse dimensions of the slow wave structure (SWS) are comparable with the free space wavelength, in these experiments the structure diameter is approximately five free space wavelengths. Recent experimental progress is presented.

[1] A. Phelps,et al. Mode coupling in periodic surface lattice and metamaterial structures for mm-wave and THz applications , 2019, SN Applied Sciences.

[2] I. Konoplev,et al. Resonant Excitation of Volume and Surface Fields on Complex Electrodynamic Surfaces , 2019, Physical Review Applied.

[3] A. Phelps,et al. Volume and surface mode coupling experiments in periodic surface structures for use in mm-THz high power radiation sources , 2018, AIP Advances.

[4] I. Konoplev,et al. Electron beam excitation of coherent sub-terahertz radiation in periodic structures manufactured by 3D printing , 2017 .

[5] I. Konoplev,et al. Cylindrical, periodic surface lattice—Theory, dispersion analysis, and experiment , 2012 .

[6] I. Konoplev,et al. Cylindrical periodic surface lattice as a metadielectric : concept of a surface-field Cherenkov source of coherent radiation , 2011 .

[7] M. Thumm,et al. Excitation of surface field cavity and coherence of electromagnetic field scattering on two-dimensional cylindrical lattice , 2010 .

[8] I. Konoplev,et al. Surface wave Cherenkov maser based on a periodic lattice , 2010 .

[9] Adrian W. Cross,et al. The use of a hybrid resonator consisting of one-dimensional and two-dimensional Bragg reflectors for generation of spatially coherent radiation in a coaxial free-electron laser , 2002 .