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Proceedings Paper

Retinal damage thresholds for 40-fs laser pulses
Author(s): Benjamin A. Rockwell; Cynthia A. Toth; David J. Stolarski; Gary D. Noojin; Paul K. Kennedy; Jesse H. Shaver; Gavin D. Buffington; Robert J. Thomas
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Paper Abstract

We have shown in previous work that the threshold for laser- induced breakdown is higher than the threshold for ophthalmoscopically visible retinal damage, but they approach each other as pulse duration decreased form several nanoseconds to 100 femtoseconds. We discuss the most recent data collected for sub-50 fs laser induced breakdown thresholds and retinal damage thresholds. With these short pulse durations, the chromatic dispersion effect on the pulse should be considered to gain a full understanding of the mechanisms for damage. We discuss the most likely damage mechanisms operative in this pulse width regime and discuss relevance to laser safety.

Paper Details

Date Published: 9 July 2001
PDF: 8 pages
Proc. SPIE 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical, (9 July 2001); doi: 10.1117/12.434694
Show Author Affiliations
Benjamin A. Rockwell, Air Force Research Lab. (United States)
Cynthia A. Toth, Duke Univ. Eye Ctr. (United States)
David J. Stolarski, The Analytical Sciences Corp. (United States)
Gary D. Noojin, The Analytical Sciences Corp. (United States)
Paul K. Kennedy, Air Force Research Lab. (United States)
Jesse H. Shaver, Fort Hays State Univ. (United States)
Gavin D. Buffington, Fort Hays State Univ. (United States)
Robert J. Thomas, The Analytical Sciences Corp. (United States)


Published in SPIE Proceedings Vol. 4257:
Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical
Donald Dean Duncan; Peter C. Johnson; Donald Dean Duncan; Steven L. Jacques; Peter C. Johnson, Editor(s)

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