A Experimental Study on Heat Conduction in Biological Tissue Irradiated by High-Power Short-Pulse Laser
Zhou Jianhua,Liu Dengying,Xu Jianzhong,Huai Xiulan
(Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100080,China)

Abstract£ºThe heat conduction in biological tissue irradiated by high-power short-pulse laser was investigated experimentally. The micro-scale film resistance thermometer with 1 microsecond response time was used to measure temperature. The output of the film resistance thermometer was recorded dynamically by a YOKOGAWA DL2700 digital oscilloscope. The experimental results show that, when the pulse duration is short, the heat conduction in biological tissue is of non-Fourier behavior. The shorter the pulse duration is and the thinner the biological tissue is, the more notable the non-Fourier heat conduction is. The power density and spot size will influence the maximum value of temperature during laser heating, and have nothing to do with the problem whether the non-Fourier heat conduction can take place.
Keywords£ºhigh-power short-pulse laser;biological tissue;non¡MFourier heat conduction