Effect of scanned quasi-cw CO2 laser irradiation on tissue thermal damage

Yacov Domankevitz; Dominic Bua; Jina Chung; Edward Hanel; Geoffrey Silver M.D.; Norman S. Nishioka

doi:10.1117/12.182944

17 August 1994 Effect of scanned quasi-cw CO2 laser irradiation on tissue thermal damage

Yacov Domankevitz, Dominic Bua, Jina Chung, Edward Hanel, Geoffrey Silver M.D., Norman S. Nishioka

Proceedings Volume 2134, Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards; (1994) https://doi.org/10.1117/12.182944
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

Residual thermal damage produced by a scanned quasi cw CO₂ laser was measured in pig skin. The effects of scan speed on thermal damage distribution for laser dwell times ranging between 1 and 150 msec were examined. Significantly larger thermal damage zones were produced along the crater wall for laser dwell times longer than 50 msec. Thermal damage along the crater base was constant independent of dwell time. The preliminary experimental results suggest that quasi cw CO₂ can consistently produce less than 200 micrometers zones of thermal damage if laser parameters are carefully chosen.

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Yacov Domankevitz, Dominic Bua, Jina Chung, Edward Hanel, Geoffrey Silver M.D., and Norman S. Nishioka "Effect of scanned quasi-cw CO2 laser irradiation on tissue thermal damage", Proc. SPIE 2134, Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards, (17 August 1994); https://doi.org/10.1117/12.182944

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KEYWORDS

Carbon dioxide lasers

Laser tissue interaction

Carbon monoxide

Continuous wave operation

Gas lasers

Laser induced damage

Ranging

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