s41598-017-08705-4.pdf (4.88 MB)
Cherenkov radiation control via self-accelerating wave-packets
journal contribution
posted on 2023-06-09, 07:39 authored by Yi Hu, Zhili Li, Benjamin Wetzel, Roberto Morandotti, Zhigang Chen, Jingjun XuCherenkov 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.
History
Publication status
- Published
File Version
- Published version
Journal
Scientific ReportsISSN
2045-2322Publisher
Nature Publishing GroupExternal DOI
Issue
8695Volume
7Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Atomic, Molecular and Optical Physics Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes