非线性光吸收的动力学
The dynamics of non-linear optical absorption
摘要：
在穿过具有吸收染料的材料时，弱光束形成Beer（指数）轮廓，而强光束形成空间上最初的线性轮廓，然后最终形成指数轮廓。由于表面层的光漂白而导致的这种异常的深穿透对于重染料负载和强光束是重要的，例如在光致动中。我们解决的问题，在时间上的演变，从最初的比尔定律，深入渗透的染料光学配置文件。我们的解决方案的耦合，非线性，偏微分方程的时空衰减的坡印亭通量和非线性动力学的\textit{trans-cis}转换适用于一般系统的光活性分子在强烈的照射下，例如在生物学，光谱学和光机械设备。
英文摘要：
On traversing materials with absorbing dyes, weak optical beams develop a Beer (exponential) profile, while intense beams develop a spatially initially linear and then finally an exponential profile. This anomalous, deep penetration due to photo-bleaching of surface layers is important for heavy dye-loading and intense beams, for instance in photo-actuation. We address the problem of the evolution in time from initial Beer's Law to deeply penetrating optical profiles in dyes. Our solution of the coupled, non-linear, partial differential equations governing the spatio-temporal decay of the Poynting flux and the non-linear dynamics of the \textit{trans-cis} conversion is applicable to general systems of photo-active molecules under intense irradiation, for instance in biology, in spectroscopy and in opto-mechanical devices.
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