Transient Cherenkov radiation from an inhomogeneous string excited by an ultrashort laser pulse at superluminal velocity

An optical response of one-dimensional string made of dipoles with a periodically varying density excited by a spot of light moving along the string at superluminal (sub-luminal) velocity is studied. We consider in details the spectral and temporal dynamics of the Cherenkov radiation, which occurs in such system in the transient regime. We point out the resonance character of radiation and the appearance of a new Doppler-like frequency in the spectrum of the transient Cherenkov radiation. Possible applications of the effect as well as different string topologies are discussed.

Keywords

Cherenkov radiation, superluminal pulse propagation, ultrashort laser pulse, diffraction of ultrashort laser pulses

URI

https://doi.org/10.34657/3404
https://oa.tib.eu/renate/handle/123456789/3275

Citation

Arkhipov, R., Babushkin, I., Lebedev, M. K., Tolmachev, Y. A., & Arkhipov, M. V. (2013). Transient Cherenkov radiation from an inhomogeneous string excited by an ultrashort laser pulse at superluminal velocity (Vol. 1852). Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik.

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Mathematik
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