Corneal damage thresholds for multiple-pulse exposures to 2.02 μm radiation from a Tm: YAG laser

R. L. McCally, C. B. Bargeron

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Corneal epithelial damage thresholds were determined for exposures to sequences of pulses from a Tm:YAG laser (wavelength 2.02 μm). Pulse repetition frequencies were 1, 10, 20, and 100 Hz and individual pulse durations were 0.300 sec at 1 Hz, 0.025 sec at 10 and 20 Hz, and 0.005 sec at 100 Hz. Threshold damage is correlated by an empirical power law of the from Ith = CN in which Ith is the threshold irradiance and N is the number of pulses. The constant C differs depending on the pulse repetition frequency and individual pulse duration. The exponent α varies between 0.22 and 0.29. For some exposure conditions the empirical power law underestimates the damage threshold for small numbers of pulses.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsB.E. Stuck, M. Belkin
Pages97-103
Number of pages7
Volume4246
DOIs
StatePublished - 2001
EventLaser and Noncoherent Light Ocular Effects:Epidemiology, Prevention, and Treatment - San Jose, CA, United States
Duration: Jan 22 2001Jan 22 2001

Other

OtherLaser and Noncoherent Light Ocular Effects:Epidemiology, Prevention, and Treatment
CountryUnited States
CitySan Jose, CA
Period1/22/011/22/01

Fingerprint

yield point
YAG lasers
Laser pulses
Radiation
Lasers
radiation
pulses
repetition
pulse duration
Wavelength
irradiance
exponents
thresholds
wavelengths

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

McCally, R. L., & Bargeron, C. B. (2001). Corneal damage thresholds for multiple-pulse exposures to 2.02 μm radiation from a Tm: YAG laser. In B. E. Stuck, & M. Belkin (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4246, pp. 97-103) https://doi.org/10.1117/12.426708

Corneal damage thresholds for multiple-pulse exposures to 2.02 μm radiation from a Tm : YAG laser. / McCally, R. L.; Bargeron, C. B.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / B.E. Stuck; M. Belkin. Vol. 4246 2001. p. 97-103.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

McCally, RL & Bargeron, CB 2001, Corneal damage thresholds for multiple-pulse exposures to 2.02 μm radiation from a Tm: YAG laser. in BE Stuck & M Belkin (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4246, pp. 97-103, Laser and Noncoherent Light Ocular Effects:Epidemiology, Prevention, and Treatment, San Jose, CA, United States, 1/22/01. https://doi.org/10.1117/12.426708
McCally RL, Bargeron CB. Corneal damage thresholds for multiple-pulse exposures to 2.02 μm radiation from a Tm: YAG laser. In Stuck BE, Belkin M, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4246. 2001. p. 97-103 https://doi.org/10.1117/12.426708
McCally, R. L. ; Bargeron, C. B. / Corneal damage thresholds for multiple-pulse exposures to 2.02 μm radiation from a Tm : YAG laser. Proceedings of SPIE - The International Society for Optical Engineering. editor / B.E. Stuck ; M. Belkin. Vol. 4246 2001. pp. 97-103
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