Angular steering of the free-electron-laser far-field radiation beam
- Faculty of Engineering, Tel Aviv University, Ramat Aviv 69978, Israel (IL) Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (USA)
The free-electron laser (FEL) is presented theoretically in this paper as an angularly directed radiation source. Features of phased-array antenna are incorporated in known FEL schemes to provide the angular steering of the FEL radiation in the far field. Various methods for FEL angular steering are proposed. These are classified in this paper as {ital end}-{ital fire} and {ital broadside} schemes. A unified two-dimensional linear model for the FEL angular steering is derived and implemented to demonstrate the performances of the various steering methods. It is shown that by using a miniature wiggler, a considerable angular steering range is feasible in the broadside FEL scheme in the {ital millimeter} wave range. Possible applications for the FEL angular steering features, considering their limitations, are proposed.
- OSTI ID:
- 6834149
- Journal Information:
- Physical Review, A (General Physics); (USA), Vol. 41:7; ISSN 0556-2791
- Country of Publication:
- United States
- Language:
- English
Similar Records
A Waveguide Antenna with an Extended Angular Range for Remote Steering of Wave-Beam Direction
Free-electron generators of coherent radiation