| 高功率短脉冲激光照射下生物组织内的热传导研究 |
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| 引用本文： | 周建华,刘登瀛,徐建中,淮秀兰.高功率短脉冲激光照射下生物组织内的热传导研究[J].西安交通大学学报,2002,36(7):684-687. |
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| 作者姓名： | 周建华 刘登瀛 徐建中 淮秀兰 |
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| 作者单位： | 中国科学院工程热物理研究所,100080,北京 |
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| 基金项目： | 国家自然科学基金资助项目 (5 9736 130 )，国家重点基础研究发展规划资助项目 (G2 0 0 0 0 2 6 30 5 ) |
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| 摘 要： | 采用响应时间为1μs的超小型薄膜铂热电阻温度计及日本YOKOGAWA DL2700高速数字示波器，对微秒量级脉冲激光照射下离体动物组织内的热传导进行了实验研究，结果发现：在激光脉宽较短时，组织内出现了非傅时叶导热现象，脉宽越短，组织厚度越薄，非傅时叶导热特征越明显，功率密度和光斑直径只影响温度上升的高低，对是否会出现非傅里叶导热没有影响。
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| 关 键 词： | 热传导 高功率短脉冲激光 生物组织 非傅里叶导热 热效应 温度测量 |
| 文章编号： | 0253-987X(2002)07-0684-04 |
| 修稿时间： | 2001年9月10日 |
Experimental Study on Heat Conduction in Biological Tissue Irradiated by High-Power Short-Pulse Laser |
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| Zhou Jianhua,Liu Dengying,Xu Jianzhong,Huai Xiulan.Experimental Study on Heat Conduction in Biological Tissue Irradiated by High-Power Short-Pulse Laser[J].Journal of Xi'an Jiaotong University,2002,36(7):684-687. |
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| Authors: | Zhou Jianhua Liu Dengying Xu Jianzhong Huai Xiulan |
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| Abstract: | The 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. |
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| Keywords: | high power short pulse laser biological tissue non Fourier heat conduction |
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