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- Title
Emission of a spatially modulated resonant medium excited with superluminal velocity.
- Authors
Arkhipov, M.; Arkhipov, R.; Tolmachev, Yu.
- Abstract
Specific characteristics of the radiation of a resonant medium excited by an ultrashort light pulse propagating through the medium with a superluminal velocity are considered. The medium is assumed to consist of identical linear harmonic oscillators with a spatial density periodically modulated along the direction of propagation of the superluminal excitation. The field of radiation of the resonant medium under these conditions is calculated. It is shown that, under the superluminal excitation, the radiation spectrum of the medium shows, along with the fundamental frequency of the oscillators, new frequencies that depend on the spatial frequency of the distribution of oscillators and on the angle of observation. Possible application of the effect is discussed.
- Subjects
RADIATION; RESONANCE; ULTRASHORT laser pulses; HARMONIC oscillators; EXCITATION spectrum; SPECIAL relativity (Physics); ELECTROMAGNETIC fields
- Publication
Optics & Spectroscopy, 2012, Vol 112, Issue 2, p243
- ISSN
0030-400X
- Publication type
Article
- DOI
10.1134/S0030400X12020038