光致变色菌紫质薄膜的动态光学响应特性  

OPTICAL DYNAMIC RESPONSE OF PHOTOCHROMIC BACTERIORHODOPSIN FILMS

作　　者：郑媛[1] 姚保利[1] 王英利[1] 雷铭[1] 

机构地区：[1]中国科学院西安光学精密机械研究所瞬态光学技术国家重点实验室,西安710068

出　　处：《光子学报》2002年第1期10-14,共5页Acta Photonica Sinica

基　　金：国家自然科学基金 (批准号 :6 0 0 0 70 0 9);中国科学院院长基金 (批准号 :4 0 0 0 70 5 9)资助项目

摘　　要：用二能级光致变色模型 ,理论分析了菌紫质薄膜在 570 nm单光束和 570 nm与 41 2 nm双光束作用下光致变色的动态光学响应特性 .计算表明 ,M态寿命越长 ,入射光强越大 ,则透过光的响应越快 ,入射光透过率饱和值越大 .在双光束的作用下 ,可以用 570 nm的黄光调制41 2 nm紫光的透射光强 ,实现以光控光操作 .根据计算结果分析了 bWith two-level photochromic model,the optical dynamic response of bacteriorhodopsin films under illumination of single beam (570nm) or double beams (570nm and 412nm) is theoretically analyzed.Numeric calculations indicate the longer the lifeting of M state and the higher the incident light intensity,the faster the response of transmissive light and the higher the saturate transmittance of the incident light.Under the illumination of double beams,the transmissive intensity of the 412nm purple light can be modulated by the 570nm yellow light,which can realize the so called light-controlled-by-light operation.The characteristics of the bR film in the application of motion detection are analyzed according to the calculating results.

关 键 词：菌紫质 光致变色 动态光学响应 运动探测 薄膜 光敏蛋白质 

分 类 号：Q51[生物学—生物化学] Q632