Measurement of fluorescence spectra and quantum yields of 193nm ArF laser photoablation of the cornea and synthetic lenticules

Peter J. Milne, Rod G. Zika, Jean-Marie A Parel, David B. Denham, C. Murray Penney

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

Abstract

Photorefractive keratomileusis procedures are currently being evaluated for both direct ablation of the human cornea and for the shaping of synthetic lenticules, with the ArF excimer laser offering the promise of reduced photochemical damage of underlying tissues due to the non-penetrative nature of 193nm radiation. In order to better consider the possible effects of any secondary luminescence produced by the interaction of 193nm radiation with these materials, an optical system based on a gated diode array spectrometer was constructed and used to record their fluorescence spectra at known laser fluences. A broadband fluorescence peak centered around 290-330nm was observed upon irradiation of corneal buttons and collagen based biopolymers. The optical efficiency of the fluorescence cell was calibrated by the use of a scattering material of known reflectivity allowing estimates of the fluorescence quantum yield of this process to be made.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsCarmen A. Puliafito
PublisherPubl by Int Soc for Optical Engineering
Pages122-128
Number of pages7
Volume1423
StatePublished - 1991
EventProceedings of Ophthalmic Technologies - Los Angeles, CA, USA
Duration: Jan 21 1991Jan 22 1991

Other

OtherProceedings of Ophthalmic Technologies
CityLos Angeles, CA, USA
Period1/21/911/22/91

Fingerprint

cornea
Quantum yield
Fluorescence
fluorescence
Lasers
lasers
buttons
Radiation
biopolymers
Biopolymers
Excimer lasers
optical materials
radiation
collagens
Ablation
Collagen
Optical systems
excimer lasers
ablation
Spectrometers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Milne, P. J., Zika, R. G., Parel, J-M. A., Denham, D. B., & Penney, C. M. (1991). Measurement of fluorescence spectra and quantum yields of 193nm ArF laser photoablation of the cornea and synthetic lenticules. In C. A. Puliafito (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 1423, pp. 122-128). Publ by Int Soc for Optical Engineering.

Measurement of fluorescence spectra and quantum yields of 193nm ArF laser photoablation of the cornea and synthetic lenticules. / Milne, Peter J.; Zika, Rod G.; Parel, Jean-Marie A; Denham, David B.; Penney, C. Murray.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / Carmen A. Puliafito. Vol. 1423 Publ by Int Soc for Optical Engineering, 1991. p. 122-128.

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

Milne, PJ, Zika, RG, Parel, J-MA, Denham, DB & Penney, CM 1991, Measurement of fluorescence spectra and quantum yields of 193nm ArF laser photoablation of the cornea and synthetic lenticules. in CA Puliafito (ed.), Proceedings of SPIE - The International Society for Optical Engineering. vol. 1423, Publ by Int Soc for Optical Engineering, pp. 122-128, Proceedings of Ophthalmic Technologies, Los Angeles, CA, USA, 1/21/91.
Milne PJ, Zika RG, Parel J-MA, Denham DB, Penney CM. Measurement of fluorescence spectra and quantum yields of 193nm ArF laser photoablation of the cornea and synthetic lenticules. In Puliafito CA, editor, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 1423. Publ by Int Soc for Optical Engineering. 1991. p. 122-128
Milne, Peter J. ; Zika, Rod G. ; Parel, Jean-Marie A ; Denham, David B. ; Penney, C. Murray. / Measurement of fluorescence spectra and quantum yields of 193nm ArF laser photoablation of the cornea and synthetic lenticules. Proceedings of SPIE - The International Society for Optical Engineering. editor / Carmen A. Puliafito. Vol. 1423 Publ by Int Soc for Optical Engineering, 1991. pp. 122-128
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