corner
corner
APS » Journals » Phys. Rev. E » Volume 74 » Issue 5
< Previous Article | Next Article >

Phys. Rev. E 74, 056601 (2006) [4 pages]

Exotic radiation from a photonic crystal excited by an ultrarelativistic electron beam

Download: PDF (776 kB) Buy this article Export: BibTeX or EndNote (RIS)

N. Horiuchi1, T. Ochiai2, J. Inoue2, Y. Segawa1, Y. Shibata3, K. Ishi3, Y. Kondo4, M. Kanbe4, H. Miyazaki4, F. Hinode5, S. Yamaguti6, and K. Ohtaka7
1Photodynamics Research Center, The Institute of Physical and Chemical Research (RIKEN), Sendai 980-0845, Japan
2Quantum Dot Research Center, National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
3Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
4Department of Applied Physics, Tohoku University, Sendai 980-8579, Japan
5Laboratory of Nuclear Science, Tohoku University, Sendai 982-0826, Japan
6Graduate School of Science and Technology, Chiba University, Chiba 263-8522, Japan
7Center for Frontier Science, Chiba University, Chiba 263-8522, Japan

Received 7 October 2005; published 1 November 2006

We report the observation of an exotic radiation (unconventional Smith-Purcell radiation) from a one-dimensional photonic crystal. The physical origin of the exotic radiation is direct excitation of the photonic bands by an ultrarelativistic electron beam. The spectrum of the exotic radiation follows photonic bands of a certain parity, in striking contrast to the conventional Smith-Purcell radiation, which shows solely a linear dispersion. Key ingredients for the observation are the facts that the electron beam is in an ultrarelativistic region and that the photonic crystal is finite. The origin of the radiation was identified by comparison of experimental and theoretical results.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.74.056601
DOI:
10.1103/PhysRevE.74.056601
PACS:
42.70.Qs, 41.60.−m, 41.75.Ht
 
< Previous Article | Next Article >