Effect of various outcoupling options on free-electron ring laser performance

Journal Article · Wed Nov 01 04:00:00 EST 1989 · IEEE (Institute of Electrical and Electronics Engineers) Journal of Quantum Electronics; (USA)

DOI:https://doi.org/10.1109/3.42062· OSTI ID:5233889

Kennedy, P K; Sun, K C; Labbe, R H; Cover, R A ^[1]

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1. Rockwell International Corp., Canoga Park, CA (USA). Rocketdyne Div.

Power extraction and lowest order transverse mode structure of a free-electron ring laser with hyperboloid-paraboloid grazing incidence telescopes were studied as a function of the method used to outcouple the beam. Four different resonator configurations, with various outcoupling and intracavity optics, were modeled using a free-electron laser, wave optics computer code. A stable ring with a diffraction grating outcoupler gave better power extraction and transverse mode structure than unstable rings with scrapers which outcoupled either an annular ring or a central spot. Efforts to reshape the intracavity beam after scraper outcoupling, in order to improve interaction with the electron beam in the wiggler, did not produce power extraction equivalent to that of the stable ring.

• OSTI ID: 5233889
• Journal Information: IEEE (Institute of Electrical and Electronics Engineers) Journal of Quantum Electronics; (USA), Journal Name: IEEE (Institute of Electrical and Electronics Engineers) Journal of Quantum Electronics; (USA) Vol. 25:11; ISSN 0018-9197; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
640301 -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAM EXTRACTION
BEAM SHAPING
BEAMS
CAVITY RESONATORS
COMPUTER CODES
CONFIGURATION
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
EQUIPMENT
FREE ELECTRON LASERS
GRATINGS
GRAZING
INTERACTIONS
LASERS
LEPTON BEAMS
MAGNETS
OPTICS
PARTICLE BEAMS
PERFORMANCE
RESONATORS
WIGGLER MAGNETS