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Proceedings Paper

Laser safety standard for skin at 1540 nm: new experiment and estimations
Author(s): Alexei V. Lukashev; Sergey E. Sverchkov; Valery P. Solovyev; Boris I. Denker; Victor V. Engovatov
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Paper Abstract

Radiant exposure of an Er-glass laser producing 50 percent probability (ED50) of a minimum erythema on porcine skin was measured in vivo for laser pulses 100 ns and 2.5 ms pulse duration. ED50 at 24 hours post-exposure was found 3.5 J/cm2 for short laser pulses and 6.5 J/cm2 for long ones. The single pulse dose in a chain of repetitive pulses producing minimum erythema were determined for 2n(n equals 16) pulses. The minimum reaction of skin on laser irradiance were studied for different beam diameter. The reaction of skin is mostly considered as local super heating. THe data obtained in the study are adequate to update safety standards for cutaneous injury.

Paper Details

Date Published: 2 May 1997
PDF: 9 pages
Proc. SPIE 2974, Laser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment, (2 May 1997); doi: 10.1117/12.275236
Show Author Affiliations
Alexei V. Lukashev, General Physics Institute (Russia)
Sergey E. Sverchkov, General Physics Institute (Russia)
Valery P. Solovyev, Institute of Biophysics (Russia)
Boris I. Denker, General Physics Institute (Russia)
Victor V. Engovatov, Institute of Biophysics (Russia)

Published in SPIE Proceedings Vol. 2974:
Laser and Noncoherent Ocular Effects: Epidemiology, Prevention, and Treatment
Bruce E. Stuck; Michael Belkin M.D., Editor(s)

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