Retinal damage thresholds for 40-fs laser pulses

Benjamin A. Rockwell; Cynthia A. Toth M.D.; David J. Stolarski; Gary D. Noojin; Paul K. Kennedy; Jesse H. Shaver; Gavin D. Buffington; Robert J. Thomas

doi:10.1117/12.434694

9 July 2001 Retinal damage thresholds for 40-fs laser pulses

Benjamin A. Rockwell, Cynthia A. Toth M.D., David J. Stolarski, Gary D. Noojin, Paul K. Kennedy, Jesse H. Shaver, Gavin D. Buffington, Robert J. Thomas

Author Affiliations +

Proceedings Volume 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical; (2001) https://doi.org/10.1117/12.434694
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

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.

Citation Download Citation

Benjamin A. Rockwell, Cynthia A. Toth M.D., David J. Stolarski, Gary D. Noojin, Paul K. Kennedy, Jesse H. Shaver, Gavin D. Buffington, and Robert J. Thomas "Retinal damage thresholds for 40-fs laser pulses", Proc. SPIE 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical, (9 July 2001); https://doi.org/10.1117/12.434694

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