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Proceedings Paper

Biomedical applications of free-electron lasers: generation of ultrashort high-peak-power optical pulses
Author(s): Eric B. Szarmes; John M. J. Madey
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Paper Abstract

The Mark III free-electron laser (FEL) is an rf linac-driven infrared laser continuously tunable from 2 to 9 microns which delivers diffraction-limited optical pulses with durations of several picoseconds and peak output powers of several megaWatts. By driving the laser with electron pulses which exhibit a linear energy chirp over time, one can create broadband optical pulses which exhibit a linear frequency chirp and are susceptible to pulse compression in an external dispersive delay line. Numerical simulations of the Mark III FEL at 3.35 μm using electron pulses with only a 2% energy chirp over 4 ps have demonstrated subsequent optical pulse compression from 3.4 ps to 230 fs, and compressed peak output powers of 30 MW; such pulses can be focused to intensities greater than 1013 W/cm2. We review the extension of the technique to other wavelengths, and describe the design of prism compressors in the wavelength ranges of 2.5-4.1 μm and 7.5-9.1 μm which have been procured for applications in a user-oriented program at Duke University.

Paper Details

Date Published: 7 August 1992
PDF: 11 pages
Proc. SPIE 1646, Laser-Tissue Interaction III, (7 August 1992); doi: 10.1117/12.142544
Show Author Affiliations
Eric B. Szarmes, Duke Univ. (United States)
John M. J. Madey, Duke Univ. (United States)

Published in SPIE Proceedings Vol. 1646:
Laser-Tissue Interaction III
Steven L. Jacques, Editor(s)

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