Problems such as genetic damage should be considered in the medical application of lasers. Photochemical damage to living tissue is caused by high-photon energy light. Changes in the UV-VIS absorbance of amino acids by femtosecond laser irradiation are investigated. The results indicate that changes in UV-VIS absorption appeared at a peak intensity above 40 GW/cm{sup}2, suggesting that a change in the chemical structure was caused by multiphoton absorption during the femtosecond laser irradiation.
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机译：在激光器的医学应用中应考虑遗传损伤等问题。活组织的光化学损伤是由高光子能量光引起的。研究了飞秒激光照射的氨基酸UV-Vis吸光度的变化。结果表明，UV-Vis吸收的变化出现在40 gw / cm {sup} 2以上的峰强度下，表明在飞秒激光照射期间的多光子吸收引起了化学结构的变化。
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