Proposed ultraviolet free-electron laser at Brookhaven Natl. Lab. a source for time-resolved biochemical spectroscopy

Erik D. Johnson, William R. Laws, John C. Sutherland

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Brookhaven National Laboratory is designing an ultraviolet free-electron laser (UV-FEL) user facility that will provide picosecond and subpicosecond pulses of coherent ultraviolet radiation for wavelengths from 300 to 75 nm. Pulse width will be variable from about 7 ps to ≈ 200 fs, with repetition rates as high as 104 Hz, single pulse energies > 1 mJ and, hence, peak pulse power > 200 MW and average beam power > 10 W. The facility will be capable of `pump-probe' experiments utilizing the FEL radiation with: (1) synchronized auxiliary lasers, (2) a second, independently tunable FEL beam or, (3) broad- spectrum, high-repetition rate recirculating superconducting linear accelerator which feeds pulses of electrons to two magnetic wigglers. Within these two devices, photons from tunable `conventional' lasers would be frequency multiplied and amplified. By synchronously tuning the seed laser and modulating the energy of the electron beam, tuning of as much as 60% in wavelength is possible between alternating pulses supplied to different experimental stations, with Fourier transform limited resolution. Thus, up to four independent experiments may operate at one time, each with independent control of the wavelength and pulse duration.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Pages426-432
Number of pages7
ISBN (Print)0819407860
StatePublished - Jan 1 1992
Externally publishedYes
EventTime-Resolved Laser Spectroscopy in Biochemistry III - Los Angeles, CA, USA
Duration: Jan 20 1992Jan 22 1992

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1640
ISSN (Print)0277-786X

Other

OtherTime-Resolved Laser Spectroscopy in Biochemistry III
CityLos Angeles, CA, USA
Period1/20/921/22/92

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Johnson, E. D., Laws, W. R., & Sutherland, J. C. (1992). Proposed ultraviolet free-electron laser at Brookhaven Natl. Lab. a source for time-resolved biochemical spectroscopy. In Proceedings of SPIE - The International Society for Optical Engineering (pp. 426-432). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 1640). Publ by Int Soc for Optical Engineering.