1 July 2010 Cavitation effect of holmium laser pulse applied to ablation of hard tissue underwater
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Abstract
To overcome the inconsecutive drawback of shadow and schlieren photography, the complete dynamics of cavitation bubble oscillation or ablation products induced by a single holmium laser pulse [2.12μm , 300μs (FWHM)] transmitted in different core diameter (200, 400, and 600μm ) fibers is recorded by means of high-speed photography. Consecutive images from high-speed cameras can stand for the true and complete process of laser-water or laser-tissue interaction. Both laser pulse energy and fiber diameter determine cavitation bubble size, which further determines acoustic transient amplitudes. Based on the pictures taken by high-speed camera and scanned by an optical coherent microscopy (OCM) system, it is easily seen that the liquid layer at the distal end of the fiber plays an important role during the process of laser-tissue interaction, which can increase ablation efficiency, decrease heat side effects, and reduce cost.
© (2010) Society of Photo-Optical Instrumentation Engineers (SPIE)
Tao Lu, Tao Lu, Qing Xiao, Qing Xiao, Danqing Xia, Danqing Xia, Kai Ruan, Kai Ruan, Zhengjia Li, Zhengjia Li, } "Cavitation effect of holmium laser pulse applied to ablation of hard tissue underwater," Journal of Biomedical Optics 15(4), 048002 (1 July 2010). https://doi.org/10.1117/1.3470092 . Submission:
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