摘要

In order to investigate the influence of water environment on fiber-guided holmium laser ablation of hard tissues, high-speed photography is performed to accurately record the dynamic evolutions of vaporization bubbles and ablation plumes, and optical coherence microscopy is also used to measure the crater morphology. Experimental results indicate that under the same condition, the ablation performances in air and in water for a single long-pulse laser are comparable when the used fibers are in perpendicular contact with the tissues. But for multiple-pulses ablation, the ablation performances such as ablation efficiency and surface morphology in water become better than those in air because of more and more significant vaporization effect for bigger ablation craters. Optical coherence microscopy is an effective tool for the morphological measurement of craters.

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