High order mode oscillation in a terahertz photonic-band-gap multibeam reflex klystron

Jang, Kyu-Ha; Jeon, Seok-Gy; Kim, Jung-Il; Won, Jong-Hyo; So, Jin-Kyu; Bak, Seung-Ho; Srivastava, Anurag; Jung, Sun-Shin; Park, Gun-Sik
November 2008
Applied Physics Letters;11/24/2008, Vol. 93 Issue 21, p211104
Academic Journal
TM330-like higher order mode was excited in a multibeam reflex klystron oscillator employing a hybrid photonic-band-gap (PBG) cavity using a three-dimensional particle-in-cell simulation. One side of a conventional metal cavity was replaced with a dielectric photonic crystal lattice to form a hybrid PBG resonator that uses lattice band-gap effects resulting in a more uniform field of a higher order mode as well as the exclusion of some conventional-cavity-type modes, thereby reducing mode competition. Simulated reflex klystron in the hybrid PBG cavity produced an output power much higher than could be delivered in a conventional metal cavity.


Related Articles

  • INVESTIGATION ON THE INERTANCE TUBES OF PULSE TUBE CRYOCOOLER WITHOUT RESERVOIR. Liu, Y. J.; Yang, L. W.; Liang, J. T.; Hong, G. T. // AIP Conference Proceedings;4/9/2010, Vol. 1218 Issue 1, p128 

    Phase angle is of vital importance for high-efficiency pulse tube cryocoolers (PTCs). Inertance tube as the main phase shifter is useful for the PTCs to obtain appropriate phase angle. Experiments of inertance tube without reservoir under variable frequency, variable length and diameter of...

  • A NOVEL DESIGN OF LOW PROFILE HIGHLY DIRECTIVE ANTENNA WITH PARTIALLY REFLECTING SURFACE SUPERSTRATE. Xiao-Jing Qi; Yong-Chang Jiao; Gang Zhao; Kai-Lun Liang // Progress in Electromagnetics Research Letters;2013, Vol. 43, p55 

    This paper presents a new design of high-gain low-profile resonant cavity antenna. A novel partially reflecting surface (PRS) is adopted as the superstrate with the characteristics of high-reflection magnitude and low-reflection phase that allows the reduction of cavity height to about λ/8...

  • Multipole-cancellation mechanism for high-Q cavities in the absence of a complete photonic band gap. Johnson, Steven G.; Fan, Shanhui; Mekis, Attila; Joannopoulos, J. D. // Applied Physics Letters;5/28/2001, Vol. 78 Issue 22, p3388 

    We describe and demonstrate a new mechanism for low radiation losses in structures lacking a complete band gap, and show how resonant cavities with Q>10[sup 3] can be achieved without sacrificing strong localization in 3d. This involves a forced cancellation in the lowest-order term(s) of the...

  • Simulation software tackles design of laser resonators. Altmann, Konrad // Laser Focus World;May2000, Vol. 36 Issue 5, p293 

    Reports on the development of software that combines several simulation tools to provide rapid analysis of the complex interactions in a resonator design. Why laser engineers are not inclined to use simulation software for optimizing resonator design; Laser engineering tools; Use of the finite...

  • Predictions of electromagnetic field-induced forces utilizing adiabatic invariance. Ryan, J. D.; Wanis, S. // Journal of Applied Physics;Jun2011, Vol. 109 Issue 11, p114906 

    The Boltzmann-Ehrenfest (BE) principle of adiabatic invariance, a form of energy conservation, is utilized for the purposes of predicting field-induced forces acting on a neutral particle placed in an electromagnetic cavity resonator. In a simulation environment, the force was determined using...

  • Aggregation of theta-polymers in spherical confinement. Zierenberg, Johannes; Mueller, Marco; Schierz, Philipp; Marenz, Martin; Janke, Wolfhard // Journal of Chemical Physics;9/21/2014, Vol. 141 Issue 11, p1 

    We investigate the aggregation transition of theta polymers in spherical confinement with multicanonical simulations. This allows for a systematic study of the effect of density on the aggregation transition temperature for up to 24 monodisperse polymers. Our results for solutions in the dilute...

  • Tunable mid-infrared plasmonic band-pass filter based on a single graphene sheet with cavities. Hong-Ju Li; Ling-Ling Wang; Bin Sun; Zhen-Rong Huang; Xiang Zhai // Journal of Applied Physics;2014, Vol. 116 Issue 22, p224505-1 

    The single graphene sheet with two cavities constructed on substrates is proposed and numerically investigated by using the finite-difference time-domain (FDTD) method. Thanks to the two introduced cavities, the sandwiched graphene strip behaves as a line-shaped plasmonic resonator. The simple...

  • Growth of long wavelength InxGa1-xAsySb1-y layers on GaAs from liquid phase. Kumar, A.; Dutta, P. S. // Applied Physics Letters;10/16/2006, Vol. 89 Issue 16, p162101 

    Lattice mismatched layers of InxGa1-xAsySb1-y with band edge corresponding to a wavelength of 10.9 μm have been grown on GaAs substrates using a self-graded compositionally organized near-equilibrium growth process based on quaternary melt thermochemistry. A variable composition quaternary...

  • Diode, thyristor and triac tests using PSpice and their integration into undergraduate power electronics courses. Altawil, I. A.; Al-Zoubi, Q. M.; Yamin, H. Y. // International Journal of Electrical Engineering Education;Jan2009, Vol. 46 Issue 1, p90 

    This paper describes PSpice implementation of three power electronic devices: diode, thyristor, and triac, performed to identify characteristic curve parameters. Development of these simulation models is used to support and enhance power electronics education at the undergraduate level. The...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics