Optical properties of mid-infrared FELs from the FELI Facility I

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

OSTI ID:238778

Kobayashi, A; Okuma, S; Oshita, E ^[1]

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1. Free Electron Laser Research Institute, Inc., Osaka (Japan); and others

The FELI Facility I has succeeded in mid-infrared FEL oscillation at 6 {mu} m using a 30-MeV, 42-A electron beam from the FELI S-band linac in October 31, 1994. The FELI Facility I is composed of a 2-m vertical type undulator ({lambda}u=3.4cm, N=58, K m a x = 55, gap length{ge}14mm) and a 6.72-m optical cavity. It can cover the wavelength range of 5-20{mu}m. The FELs can be delivered from the optical cavity to the diagnostics room through a 50-m evacuated optical pipeline. Wavelength and cavity length dependences of optical properties such as peak power, average power, spectrum width, subpulses in FEL macropulse, FEL transverse profile are reported.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• OSTI ID: 238778
• Report Number(s): BNL--61982-Absts.; CONF-9508156--Absts.; ON: DE96002729
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
43 PARTICLE ACCELERATORS
BEAM PROFILES
FREE ELECTRON LASERS
INFRARED RADIATION
LINEAR ACCELERATORS
OPTICAL PROPERTIES