超短脉冲激光在人体皮肤组织光剂量的计算机模拟

Computer Simulation of Ultrashort Laser Pulse Dosimetry in Human Skin

本文用Monte Carlo法模拟超短脉冲激光(630nm)在人体表皮、真皮及皮下组织中的传播,给出了不同时间间隔脉冲激光的透射和反射辐射能量的分布。模拟结果表明,对于这种脉冲激光,光化学中双光子反应主要是由起始时未被充分散射和吸收的脉冲所驱动,而单光子反应是由经散射后的浸射光所驱动。

The time-resolved propagation of ultrashort laser pulse within a three layered model of skin tissue was simulated with Monte Carlo method. The internal distribution of irradiance and reflectance of a δ (t) impulse were specified at different time intervals. For the impulse, the two-photon reactions were dominated by the initial primary (unscattered and unabsorbed) pulse and the single—photon reactions were dominated by the scattered diffuse light.