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Journal of Biomedical Optics

Consideration of dynamic photothermal effect for evaluation of scanning light sources in optical devices using pulsed source criteria
Author(s): Do-Hyun Kim
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Paper Abstract

Quantitative evaluation of the potential radiation hazards of scanning light sources in medical optical devices is critical. Currently, point scanning light sources of continuous radiation are treated as pulsed sources, where the dwell time at each point is equal to the pulse duration. This study compares the photothermal effects from scanning light and pulsed sources using numerical calculation for scanning without restricting aperture and with various spot sizes. The calculation results show that the thermal damage threshold of scanning source not restricted by measurement aperture does not significantly differ from that of pulsed source. Temporal temperature response and size-dependent photothermal effect also confirm the similarity between scanning and pulsed sources.

Paper Details

Date Published: 25 April 2014
PDF: 7 pages
J. Biomed. Opt. 19(4) 045004 doi: 10.1117/1.JBO.19.4.045004
Published in: Journal of Biomedical Optics Volume 19, Issue 4
Show Author Affiliations
Do-Hyun Kim, U.S. Food and Drug Administration (United States)


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