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N.M. Kroll
Researcher at University of California, San Diego
Publications - 48
Citations - 983
N.M. Kroll is an academic researcher from University of California, San Diego. The author has contributed to research in topics: Photonic crystal & Collider. The author has an hindex of 12, co-authored 48 publications receiving 938 citations.
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Journal ArticleDOI
Photonic band structure and defects in one and two dimensions
TL;DR: In this article, an experimental and numerical study of electromagnetic wave propagation in one-dimensional and two-dimensional (2D) systems composed of periodic arrays of dielectric scatterers is presented.
Journal ArticleDOI
Direct calculation of permeability and permittivity for a left-handed metamaterial
TL;DR: In this article, an electromagnetic metamaterial was fabricated and demonstrated to exhibit a "left-handed" (LH) propagation band at microwave frequencies, a situation never observed in naturally occurring materials or composites.
Journal ArticleDOI
Experimental and theoretical results for a two‐dimensional metal photonic band‐gap cavity
TL;DR: In this paper, the authors demonstrate that a two-dimensional lattice of metal cylinders can form a complete photonic band-gap (PBG) structure, which exhibits a single broad PBG extending from zero frequency to a threshold frequency, above which all modes may propagate in some direction.
Proceedings ArticleDOI
Accelerator structure R&D for linear colliders
J.W. Wang,Chris Adolphsen,Karl Bane,Gordon Bowden,D. L. Burke,H. Deruyter,J. Cornuelle,Z.D. Farkas,W.B. Fowkes,S. S. Hanna,H.A. Hoag,J. Irwin,Roger Jones,K. Ko,N.M. Kroll,Zenghai Li,G. A. Loew,Rod Loewen,Roger H. Miller,C. Ng,J. M. Paterson,C. Pearson,T.O. Raubenhemer,J. Rifkin,Ronald D. Ruth,Sami Tantawi,K.A. Thompson,K.W. Vaillancourt,Arnold Vlieks,Perry B. Wilson,K. Asano,Y. Funahashi,Yasuo Higashi,Toshiyasu Higo,N. Hitomi,Toshio Suzuki,K. Takata,Toshikazu Takatomi,N. Toge,Y. Watanabe,John W. Elmer,J. Klingmann,M. Mugge,K. van Bibber +43 more
TL;DR: In this article, a new type of damped detuned structure with optimized round-shaped cavities (RDDS) was proposed for X-band accelerator structures for the JLC/NLC linear collider.
Proceedings ArticleDOI
A multi-moded rf delay line distribution system for the next linear collider
Sami Tantawi,Gordon Bowden,Z.D. Farkas,J. Irwin,Kwok Ko,N.M. Kroll,T.L. Lavine,Z. Li,Roderick J. Loewen,Robert J. Miller,C. Nantista,Ronald D. Ruth,Jeffrey Rifkin,Arnold Vlieks,Perry B. Wilson,Chris Adolphsen,J.W. Wang +16 more
TL;DR: The Delay Line Distribution System (DLDS) as discussed by the authors is an alternative to conventional pulse compression, which enhances the peak power of rf sources while matching the long pulse of those sources to the shorter filling time of accelerator structures.