28 October 2009 Experimental research of two-wavelength laser ablation biological tissue
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Laser ablation biologic tissue is an important performance of laser application. Based on the combination function of two-wavelength laser to biologic tissue ablation, the semi-continuous two-wavelength laser at 532nm and 1064nm ablating blood tissue was investigated by experiment. The fresh pork and pig liver specimens were ablated at different laser power density and different laser power proportion in water conditions and ablation depth and thermo-damage thickness were measured. The experiment results indicate that there is no effective ablation but deeper thermo-damage of the 1064 nm laser to biologic tissue in water conditions when the 532nm laser power is little but the ablation efficiency sharp inc- reases and the thermo-damage sharp decreases when the 532nm laser power arrives to a threshold. The combination function of two wavelength laser to tissue ablation is appeared here. It indicates that the ablation efficiency and hemostatic function in laser surgery can be adjusted by the two-wavelength laser power proportion.
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Yucheng Yao, Yucheng Yao, Chuyun Huang, Chuyun Huang, Yanyan He, Yanyan He, Xia Chen, Xia Chen, "Experimental research of two-wavelength laser ablation biological tissue", Proc. SPIE 7519, Eighth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2009), 75190I (28 October 2009); doi: 10.1117/12.844662; https://doi.org/10.1117/12.844662


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