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Proceedings Paper

Measurement of fiber optic transmission and ablation of tissue using a near-IR free-electron laser
Author(s): Ronald W. Waynant; Glenn N. Merberg
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Paper Abstract

Sapphire and fluoride glass fiber optics were tested for their ability to deliver pulsed infrared laser energy. Commercial fluorozirconate fibers were found to deteriorate under pulsed laser irradiation when the wavelength was near the absorption peak of water at 2.94 micrometers. Irradiation of these fibers with modest fluences (30 mJ/cm2) of Er:YAG at 2.94 micrometers (200 microsecond(s) pulses at 6 Hz) or free electron laser (FEL) pulses (2 ps pulses in 2 microsecond(s) bursts delivered at 10 Hz) caused damage to the end faces within 30 minutes. The observations suggest a process capable of integrating energy. Because of the high transmission, no heat builds up in the fiber, but small (sub-micron) absorption sites may form due to possible chemical reactions.

Paper Details

Date Published: 14 July 1993
PDF: 9 pages
Proc. SPIE 1854, Free-Electron Laser Spectroscopy in Biology, Medicine, and Materials Science, (14 July 1993); doi: 10.1117/12.148036
Show Author Affiliations
Ronald W. Waynant, FDA Ctr. for Devices and Radiological Health (United States)
Glenn N. Merberg, FDA Ctr. for Devices and Radiological Health (United States)


Published in SPIE Proceedings Vol. 1854:
Free-Electron Laser Spectroscopy in Biology, Medicine, and Materials Science
H. Alan Schwettman, Editor(s)

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