Simultaneous operation of a free-electron laser on two harmonically related wavelengths
- California Univ., San Diego, La Jolla, CA (United States). Dept. of Physics
- Los Alamos National Lab., NM (United States)
The interaction of light waves at the fundamental and the third harmonic frequencies in a free-electron laser (FEL) oscillator is explored using the 1-D finite pulse mode-code BFELP. The code, which assumes that only the TEM[sub 00] transverse mode is present at both harmonic frequencies, tracks the temporally-finite pulse electric field amplitudes of the fundamental and the third harmonic which interact with an rf-linac-generated electron micropulse inside a wiggler. The evolution of the pulse profiles, with possibly different mirror reflectivities at each frequency, after many passes through the wiggler and the optical resonator, has been generated for various initial conditions. Results include pulse-dependent third-harmonic coherent-spontaneous emission (CSE) with, and without, multiple-pass interference effects; the effects of sidebands at the fundamental on third-harmonic CSE; and, lasing competition between the fundamental and third harmonic in overlapping spatial regions of the electron micropulse.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 7138246
- Report Number(s):
- LA-UR-92-3441; CONF-9208142-14; ON: DE93003745
- Resource Relation:
- Conference: 14. international free electron laser conference, Kobe (Japan), 23-28 Aug 1992
- Country of Publication:
- United States
- Language:
- English
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FREE ELECTRON LASERS
HARMONICS
H CODES
LINEAR ACCELERATORS
OPERATION
PHASE SPACE
WIGGLER MAGNETS
ACCELERATORS
COMPUTER CODES
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
LASERS
MAGNETS
MATHEMATICAL SPACE
OSCILLATIONS
SPACE
430100* - Particle Accelerators- Design
Development
& Operation