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High-contrast, all-optical switching in bacteriorhodopsin films

机译：细菌视紫红质膜中的高对比度全光切换

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摘要

We report experiments with nonlinear-absorption-based, high-contrast, all-optical switching in photochromic bacteriorhodopsin (BR) films. The switching action is accomplished by control of the transmission of a weak probe beam through a BR sample with the help of strong pump beam illumination at 532 nm wavelength. We found that the switching properties of BR films depend on several experimentally controllable parameters such as probe wavelength, pump beam intensity, and excitation rate. A comparative study of the switching behavior and other parameters of practical use was carried out at three probe wavelengths (543, 594, and 633 nm) and various beam powers and pump excitation rates. The results are presented for commercially available wild-type and D96N variant BR films.
机译：我们报告了在光致变色细菌视紫红质（BR）膜中基于非线性吸收，高对比度，全光学开关的实验。借助532 nm波长的强泵浦光束照明，通过控制弱的探测光束通过BR样品的传输来完成切换操作。我们发现BR薄膜的开关特性取决于几个实验可控制的参数，例如探针波长，泵浦光束强度和激发速率。在三种探头波长（543、594和633 nm）以及各种光束功率和泵浦激发速率下，对开关行为和其他实际使用参数进行了比较研究。给出了可商购的野生型和D96N变异BR膜的结果。

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