Consideration of dynamic photothermal effect for evaluation of scanning light sources in optical devices using pulsed source criteria

Do-Hyun Kim

doi:10.1117/1.JBO.19.4.045004

25 April 2014 Consideration of dynamic photothermal effect for evaluation of scanning light sources in optical devices using pulsed source criteria

Do-Hyun Kim

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Journal of Biomedical Optics, Vol. 19, Issue 4, 045004 (April 2014). https://doi.org/10.1117/1.JBO.19.4.045004

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.

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Do-Hyun Kim "Consideration of dynamic photothermal effect for evaluation of scanning light sources in optical devices using pulsed source criteria," Journal of Biomedical Optics 19(4), 045004 (25 April 2014). https://doi.org/10.1117/1.JBO.19.4.045004

Published: 25 April 2014

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KEYWORDS

Laser damage threshold

Photothermal effect

Light sources

Optical components

Thermal effects

Tissue optics

Tissues

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