First lasing, capabilities, and flexibility of FIREFLY
- Stanford Univ., CA (United States)
FIREFLY is a free electron laser that was designed to produce picosecond pulses of light in the range between 15 and 100 microns. It uses an inexpensive electromagnetic wiggler and variable outcoupling to provide maximum flexibility for user experiments. FIREFLY first lased on November 23, 1994, and has now operated from 15 to 65 microns. It has lased in both a traditional undulator configuration and as an optical klystron, and has also lased on the third harmonic between 9 and 11 microns. We present measurements of optical spectral width and pulse width at a range of wavelengths in both configurations. We also compare direct measurements of electron beam extraction efficiency with observed optical power for fundamental, third harmonic, and optical klystron operation. We discuss wavelength switching between adjacent peaks in the gain spectrum of an optical klystron, observed for the first time in FIREFLY. Finally, we focus on issues relevant to experimentation with FIREFLY, including continuously variable outcoupling, optical mode quality, and beam handling in the far-infrared.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- OSTI ID:
- 238781
- Report Number(s):
- BNL-61982-Absts.; CONF-9508156-Absts.; ON: DE96002729; CNN: Grant N00014-94-1-1024; TRN: 96:013270
- Resource Relation:
- Journal Volume: 375; Journal Issue: 1-3; Conference: 17. international free electron laser conference, New York, NY (United States), 21-25 Aug 1995; Other Information: PBD: [1995]; Related Information: Is Part Of 17th international free electron laser conference and 2nd international FEL users` workshop. Program and abstracts; PB: 300 p.
- Country of Publication:
- United States
- Language:
- English
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