Exotic radiation from a photonic crystal excited by an ultrarelativistic electron beam.
Phys Rev E Stat Nonlin Soft Matter Phys
; 74(5 Pt 2): 056601, 2006 Nov.
Article
em En
| MEDLINE
| ID: mdl-17280000
ABSTRACT
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.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev E Stat Nonlin Soft Matter Phys
Assunto da revista:
BIOFISICA
/
FISIOLOGIA
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Japão