Sideband suppression by an intracavity optical filter in the Los Alamos free-electron laser oscillator

Conference · Thu Jan 01 04:00:00 EST 1987

DOI:https://doi.org/10.1016/0168-9002(88)90214-8· OSTI ID:6249450

Goldstein, J C; Newnam, B E; Warren, R W

Experiments at the Los Alamos free-electron laser oscillator were performed with a 7.35% (..delta gamma../sub r//..gamma../sub r/) tapered wiggler. Multilayer dielectric mirrors with wavelength-dependent reflectivity and phase shift functions were used to provide high reflectivity at the fundamental wavelength but to introduce losses at expected sideband wavelengths. The electron-beam energy was varied to tune the fundamental optical wavelength. Experimental measurements are compared with results of 1-d time-dependent simulations. For the particular wiggler, optics, and e-beam conditions of this experiment, spectral sidebands were reduced only with a concomitant reduction of the total optical output of the laser. 18 refs., 12 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6249450
• Report Number(s): LA-UR-87-2147; CONF-8709110-1; ON: DE87011740
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
COMPUTER CALCULATIONS
DESIGN
FILTERS
FREE ELECTRON LASERS
LASER MIRRORS
LASERS
MIRRORS
ONE-DIMENSIONAL CALCULATIONS
OPTICAL FILTERS
OPTICAL PROPERTIES
PHASE SHIFT
PHYSICAL PROPERTIES
REFLECTIVITY
SPECTRA
SPECTRAL RESPONSE
SURFACE PROPERTIES
TESTING