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Evaluation of the potential eye hazard at visible wavelengths of the supercontinuum generated by an ultrafast NIR laser in water

Authors
  • Peralta, Xomalin G.1
  • Clary, Joseph E.1
  • Peterson, Amanda M.1
  • Noojin, Gary D.1
  • Lund, Brian J.1
  • Echeverria, Francesco J.2
  • Rockwell, Benjamin A.2
  • 1 SAIC, USA , (United States)
  • 2 Air Force Research Laboratory, USA , (United States)
Type
Published Article
Journal
Biomedical Optics Express
Publisher
The Optical Society
Publication Date
Feb 01, 2021
Volume
12
Issue
2
Pages
1167–1180
Identifiers
DOI: 10.1364/BOE.415044
PMID: 33680565
PMCID: PMC7901319
Source
PubMed Central
License
Unknown

Abstract

Lasers with ultrashort pulse durations have become ubiquitous in various applications, including ocular surgery. Therefore, we need to consider the role of nonlinear optical effects, such as supercontinuum generation during propagation within the ocular media, when evaluating their potential hazard. We used a NIR femtosecond laser to generate a supercontinuum within an artificial eye. We recorded the visible spectra of the supercontinuum generated and calculated the energy contained within the visible band. Our results indicate that for wavelengths between 1350 nm and 1450 nm the energy contained within the visible band of the generated white light supercontinuum may surpass current safety exposure limits, and pose a risk of injury to the retina.

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