Wave profile modification (optical guiding) induced by free-electron laser interaction
Journal Article
·
· Phys. Rev. Lett.; (United States)
Modification of the transverse intensity profile of a single electromagnetic waveguide mode during the free-electron laser (FEL) interaction has been measured. This effect is the waveguide analog to free-space optical guiding. The studies were carried out at microwave frequencies (8--12 GHz) in a FEL with use of a mildly relativistic electron beam of approx. =200 kV energy and approx. =1.0 A current. The probing of the rf fields was accomplished by small electric dipole antennas inserted in the interaction region. The observed intensity profiles are compared with the measured FEL-induced phase shifts (wave refractive index).
- Research Organization:
- Department of Physics and Plasma Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
- OSTI ID:
- 6186743
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:11; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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