New results of the {open_quotes}CLIO{close_quotes} infrared FEL using the new undulator {open_quotes}OMIR{close_quotes} and a hole coupling extraction

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:238780

Prazeres, R; Berset, J M; Glotin, F ^[1]

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1. Universite de Paris-Sud, Orsay (France); and others

In order to extend the {open_quote}CLIO{close_quote} laser spectral range toward larger wavelength, the previous undulator {open_quotes}POPOO{close_quotes} has been replaced by a new one called {open_quotes}OMIR{close_quotes}. The new undulator has now N=38 periods of {lambda}{sub o}=5.04cm, instead of N=48 and {lambda}{sub o}=4cm. Lasing toward larger wavelength needs also a new larger undulator vacuum chamber to avoid laser diffraction. The ZnSe Brewster plate, which was initially used for laser extraction, has been replaced by a hole coupling extraction in order to allow lasing above 17{mu}m. This paper summarizes the general performances of CLIO with this new configuration, and makes a comparison with the previous results. The laser power has been increased for the users, and the wavelength range has been extended. Two colours operating mode has also been observed with hole coupling.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• OSTI ID: 238780
• Report Number(s): BNL--61982-Absts.; CONF-9508156--Absts.; ON: DE96002729
• Country of Publication: United States
• Language: English

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