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Applied Optics

Applied Optics


  • Vol. 35, Iss. 19 — Jul. 1, 1996
  • pp: 3386–3391

Corneal-tissue absorption coefficients for 193- and 213-nm ultraviolet radiation

G. H. Pettit and M. N. Ediger  »View Author Affiliations

Applied Optics, Vol. 35, Issue 19, pp. 3386-3391 (1996)

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The small-signal absorption coefficients of 193- and 213-nm nanosecond laser pulses in bovine corneal tissue have been studied. The absolute reflectance of a planar quartz–cornea interface was measured at various angles of incidence for low-intensity laser irradiation (i.e., pulse fluences 3 orders of magnitude below the ablation threshold). The reflectance-versus-angle data were analyzed by the use of Fresnel theory to estimate the effective complex index of refraction of the tissue. This analysis indicated corneal absorption coefficients of 39,900 ± 9800 cm−1 at 193 nm and 21,400 ± 4900 cm−1 at 213 nm.

© 1996 Optical Society of America

Original Manuscript: October 16, 1995
Revised Manuscript: January 25, 1996
Published: July 1, 1996

G. H. Pettit and M. N. Ediger, "Corneal-tissue absorption coefficients for 193- and 213-nm ultraviolet radiation," Appl. Opt. 35, 3386-3391 (1996)

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