自上世纪70年代激光开始应用于医学,依赖于如波长、脉宽、脉冲能量、峰值功率以及聚焦性能等激光参数,激光物质相互作用的机制显著不同。超短脉冲激光的脉冲宽度在皮秒以下,可以用相对小的脉冲能量实现相当大的峰值功率,其激光物质相互作用过程为光致破裂。超短脉冲激光对组织特殊的相互作用过程在时间标尺上远远短于经典的热传导或声波的传播过程:当脉冲能量尚局限在焦点范 Lasers have been used in medicine since the 1970s and rely on laser parameters such as wavelength, pulse width, pulse energy, peak power, and focusing performance. The mechanism of laser material interaction is significantly different. The pulse width of the ultra-short pulse laser is less than picoseconds, which can achieve relatively large peak power with a relatively small pulse energy, and the interaction process of the laser material is photodisruption. Ultrashort pulse laser on tissue specific interaction process in the time scale is much shorter than the classical heat conduction or sound wave propagation process: When the pulse energy is still limited to the focus of the fan