Accession Number : ADD011986

Title :   Novel Methods for Tuning Free Electron Lasers to Multiple Wavelengths.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Colson,William B

Report Date : 14 Aug 1985

Pagination or Media Count : 15

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).

Descriptors :   *PATENT APPLICATIONS, *TUNING, *FREE ELECTRON LASERS, COHERENT OPTICAL RADIATION, HARMONICS, MAGNETIC FIELDS, OUTPUT, AXES, ELECTRON BEAMS, RESONATORS, TILT, TRANSVERSE, TUNABLE LASERS

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE