Novel Methods for Tuning Free Electron Lasers to Multiple Wavelengths.
Abstract
The tuning of the output of a free electron laser to different wavelengths is accomplished using a tilting resonator. In a free electron laser, relativistic electrons travel through a periodic magnetic field and oscillate to amplify coherent optical radiation within a resonator with the same polarization as the magnet. Usually, the electron beam is parallel with the resonator axis and the fundamental harmonic is ordinarily used in the transverse magnetic field. By tilting the resonator axis with respect to the electron beam and transverse magnetic field, the free electron laser's output is tuned to different wavelengths. By using higher harmonics (f = 3,5,7,...) the free electron laser produces lasing in several wavelengths simultaneously. These several wavelengths are also tuned by the tilting resonator. (Patent application).
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 14, 1985
- Accession Number
- ADD011986
Entities
People
- William B. Colson
Organizations
- United States Department of the Air Force