Cherenkov radiation control via self-accelerating wave-packets

Hu, Yi, Li, Zhili, Wetzel, Benjamin, Morandotti, Roberto, Chen, Zhigang and Xu, Jingjun (2017) Cherenkov radiation control via self-accelerating wave-packets. Scientific Reports, 7 (8695). ISSN 2045-2322

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Cherenkov radiation is a ubiquitous phenomenon in nature. It describes electromagnetic radiation from a charged particle moving in a medium with a uniform velocity larger than the phase velocity of light in the same medium. Such a picture is typically adopted in the investigation of traditional Cherenkov radiation as well as its counterparts in different branches of physics, including nonlinear optics, spintronics and plasmonics. In these cases, the radiation emitted spreads along a “cone”, making it impractical for most applications. Here, we employ a self-accelerating optical pump wave-packet to demonstrate controlled shaping of one type of generalized Cherenkov radiation - dispersive waves in optical fibers. We show that, by tuning the parameters of the wave-packet, the emitted waves can be judiciously compressed and focused at desired locations, paving the way to such control in any physical system.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Atomic, Molecular and Optical Physics Research Group
Subjects: Q Science > QC Physics
Q Science > QC Physics > QC0350 Optics. Light
Depositing User: Benjamin Wetzel
Date Deposited: 21 Aug 2017 11:31
Last Modified: 21 Aug 2017 11:39

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