Chin S L, Lagacé S
Appl Opt. 1996 Feb 20;35(6):907-11. doi: 10.1364/AO.35.000907.
An intense femtosecond Ti-sapphire laser pulse was focused into water, leading to self-focusing. Apart from generating a white light (supercontinuum), the intense laser field in the self-focusing regions of the laser pulse dissociated the water molecules, giving rise to hydrogen and oxygen gas as well as hydrogen peroxide. Our analysis shows that the formation of free radicals O, H, and OH preceded the formation of the stable products of H(2), O(2), and H(2)O(2). Because O radicals and H(2)O(2) are strong oxydizing agents, one can take advantage of this phenomenon to design a laser scheme for sterilization in medical and biological applications.
一个强飞秒钛宝石激光脉冲聚焦到水中，导致自聚焦。除了产生白光（超连续谱）外，激光脉冲自聚焦区域中的强激光场使水分子解离，产生氢气、氧气以及过氧化氢。我们的分析表明，自由基O、H和OH的形成先于稳定产物H₂、O₂和H₂O₂的形成。由于O自由基和H₂O₂是强氧化剂，人们可以利用这一现象设计一种激光方案，用于医学和生物学应用中的杀菌。
