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APS » Journals » Phys. Rev. Lett. » Volume 86 » Issue 24
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Phys. Rev. Lett. 86, 5628–5631 (2001)

Photonic-Band-Gap Resonator Gyrotron

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J. R. Sirigiri*, K. E. Kreischer, J. Machuzak, I. Mastovsky, M. A. Shapiro, and R. J. Temkin
Plasma Science and Fusion Center, Massachusetts Institute of Technology, 167 Albany Street, Cambridge, Massachusetts 02139

Received 15 February 2001; published in the issue dated 11 June 2001

See accompanying Physics Focus

We report the design and experimental demonstration of a gyrotron oscillator using a photonic-band-gap (PBG) structure to eliminate mode competition in a highly overmoded resonator. The PBG cavity supports a TE041-like mode at 140 GHz and is designed to have no competing modes over a minimum frequency range δω/ω of 30% about the design mode. Experimental operation of a PBG gyrotron at 68 kV and 5 A produced 25 kW of peak power in the design mode. No other modes were observed over the full predicted operating range about the design mode. PBG cavities show great promise for applications in vacuum electron devices in the millimeter- and submillimeter-wave bands.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.86.5628
DOI:
10.1103/PhysRevLett.86.5628
PACS:
84.40.Ik, 07.57.Hm, 42.70.Qs, 84.40.Fe

*Electronic address: jags@psfc.mit.edu

 
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