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MEASUREMENTS OF HOLOGRAPHIC PROPERTIES OF BACTERIORHODOPSIN FILMS

机译：细菌视紫红质膜的全息性能的测量

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摘要

Several different bacteriorhodopsin (BR) films are characterized with respect to general holographic properties. Experimental measurements include diffraction efficiency and sensitivity as functions of the writing intensity and grating frequency, hologram thermal-decay behavior, diffraction efficiency as a function of the grating tilt within the film and the modulation depth, and estimates of the refractive-index change from the diffraction-efficiency data. The films studied include those made from wildtype BR and the genetic variants D96N and D96N/T46V. The film holographic properties were found to be relatively insensitive to the grating frequency and the grating-tilt angle. The diffraction efficiency dropped off more sharply as a function of the modulation depth than did a purely linear medium, and only the hydrated wildtype film exhibited significant behavior variation with different writing intensities because of its short M-state lifetime. The maximum diffraction efficiency measured was approximately 7.5% for a hydrated D96N BR film. We also find that the hydrated BR films exhibit significantly higher refractive-index modulation than do dry films. [References: 17]
机译：关于一般全息性质，表征了几种不同的细菌视紫红质（BR）膜。实验测量包括作为写入强度和光栅频率的函数的衍射效率和灵敏度，全息图的热衰减行为，作为膜内光栅倾斜度和调制深度的函数的衍射效率，以及根据折射率估算的折射率变化衍射效率数据。研究的电影包括由野生型BR和遗传变异D96N和D96N / T46V制成的电影。发现膜的全息特性对光栅频率和光栅倾斜角相对不敏感。与纯线性介质相比，衍射效率作为调制深度的函数下降得更为明显，并且只有水合的野生型膜由于其M态寿命短而在不同的写入强度下表现出明显的行为变化。对于水合D96N BR膜，测得的最大衍射效率约为7.5％。我们还发现，水合的BR薄膜比干薄膜具有更高的折射率调制。 [参考：17]

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