Abstract

A numerical analysis is performed to investigate the comparative contribution of the mechanisms responsible for electron gain and losses in laser-induced breakdown of the skin tissues. In this regard, we adopted a simple theoretical formulation relying on the numerical solution of a rate equation that describes the growth of the electron density due to the joined effect of multiphoton, cascade and chromophore ionization processes. Here, the rate also includes the effect of electron loss due to diffusion and recombination processes. The analysis considered skin tissue irradiated by a Nd:YAG laser radiation in the 200–550 nm wavelength range with 6 ns pulse duration full-width half-maximum (FWHM).

Graphic abstract

中文翻译：

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纳秒脉冲激光在皮肤组织中形成血浆的数值模拟

摘要

进行了数值分析，以研究在激光引起的皮肤组织破裂中负责电子增益和损耗的机理的相对贡献。在这方面，我们采用了一个简单的理论公式，它依赖于速率方程的数值解，该速率方程描述了由于多光子，级联和生色团电离过程的联合效应而导致的电子密度的增长。在此，速率还包括由于扩散和复合过程引起的电子损失的影响。分析考虑了Nd：YAG激光辐射在200-550 nm波长范围内以6 ns脉冲持续时间全宽半最大值（FWHM）照射的皮肤组织。

图形摘要