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Demonstration of Coherent Terahertz Transition Radiation from Relativistic Laser-Solid Interactions.
- Source :
-
Physical Review Letters . May2016, Vol. 116 Issue 20, p1-1. 1p. - Publication Year :
- 2016
-
Abstract
- Coherent transition radiation in the terahertz (THz) region with energies of sub-mJ/pulse has been demonstrated by relativistic laser-driven electron beams crossing the solid-vacuum boundary. Targets including mass-limited foils and layered metal-plastic targets are used to verify the radiation mechanism and characterize the radiation properties. Observations of THz emissions as a function of target parameters agree well with the formation-zone and diffraction model of transition radiation. Particle-in-cell simulations also well reproduce the observed characteristics of THz emissions. The present THz transition radiation enables not only a potential tabletop brilliant THz source, but also a novel noninvasive diagnostic for fast electron generation and transport in laser-plasma interactions. [ABSTRACT FROM AUTHOR]
- Subjects :
- *TRANSITION radiation
*LASER-plasma interactions
*SUBMILLIMETER waves
Subjects
Details
- Language :
- English
- ISSN :
- 00319007
- Volume :
- 116
- Issue :
- 20
- Database :
- Academic Search Index
- Journal :
- Physical Review Letters
- Publication Type :
- Academic Journal
- Accession number :
- 116939081
- Full Text :
- https://doi.org/10.1103/PhysRevLett.116.205003