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通过实验测定了离体乳猪皮肤组织在多脉冲Nd:YAG激光辐照下径向和轴向不同位置的温度分布,重点研究了激光辐照能量密度、脉冲重复频率以及波长对皮肤组织温升分布的影响。研究结果表明:皮肤组织中的温度分布与探测位置、激光辐照能量密度、脉冲激光的重复频率以及波长密切相关;在激光辐照时间为40s的情况下,同一波长同一频率时组织温度随能量密度的增加而增大,波长1064nm、重复频率10Hz时的安全光剂量阈值为1118.19mJ/cm2;同一波长同一能量密度时,组织温度随脉冲激光重复频率的增加而增大;同一能量密度同一频率时,波长为1064nm的多脉冲激光辐照皮肤组织时的光热效应较532nm波长明显。
The temperature distribution of the isolated suckling pig skin tissues in different radial and axial positions under multi-pulse Nd: YAG laser irradiation was experimentally determined. The effects of laser irradiation energy density, pulse repetition frequency and wavelength on skin temperature rise The impact of distribution. The results show that the temperature distribution in skin tissue is closely related to the detection position, the energy density of laser irradiation, the repetition frequency and the wavelength of pulsed laser. Under the same laser irradiation time of 40s, Density of 1064nm and the repetition rate of 10Hz when the safe light dose threshold of 1118.19mJ / cm2; the same wavelength with the same energy density, the tissue temperature increases with the pulse laser repetition frequency increases; the same energy density at the same frequency , The photothermal effect of multi-pulsed laser with wavelength of 1064nm on skin tissue is more obvious than that of 532nm.