Measurement of fiber optic transmission and ablation of tissue using a near-IR free-electron laser

Ronald W. Waynant; Glenn N. Merberg

doi:10.1117/12.148036

14 July 1993 Measurement of fiber optic transmission and ablation of tissue using a near-IR free-electron laser

Ronald W. Waynant, Glenn N. Merberg

Proceedings Volume 1854, Free-Electron Laser Spectroscopy in Biology, Medicine, and Materials Science; (1993) https://doi.org/10.1117/12.148036
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

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.

Citation Download Citation

Ronald W. Waynant and Glenn N. Merberg "Measurement of fiber optic transmission and ablation of tissue using a near-IR free-electron laser", Proc. SPIE 1854, Free-Electron Laser Spectroscopy in Biology, Medicine, and Materials Science, (14 July 1993); https://doi.org/10.1117/12.148036

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