非均匀输入图像对基于细菌视紫红质膜的新事物滤波器输出特性的数值模拟  

Simulation of effect of non-uniform input image on characteristics of output image of optical novelty filter based bacteriorhodopsin film

作　　者：杨光[1] 陈桂英[2] 祁胜文[3] 郝召锋[1] 田建国[1] 张春平[1] 

机构地区：[1]南开大学物理科学学院,弱光非线性光子学材料先进技术及制备教育部重点实验室,信息光子材料与技术天津市重点实验室,天津300071 [2]中国科学院南海海洋研究所热带海洋环境动力学重点实验室,广州510301 [3]德州学院物理系,德州253023

出　　处：《物理学报》2007年第12期6954-6960,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60578020;20564001);山东省自然科学基金(批准号:Y2006A01);教育部长江学者和创新团队发展计划(批准号:IRT0419)资助的课题.~~

摘　　要：研究了基于细菌视紫红质(bR)膜的新事物滤波器的非均匀输入图像对输出图像特性的影响.与具有均匀光强分布的输入图像相比,在正弦分布的输入图像情况下,输出图像的光强分布不再呈现单调变化,而是出现两个峰值,其中间有较小的光强.bR膜的M态寿命和物体运动速度对输出图像上蓝光光强的分布有一定影响.M态寿命越大,透过的蓝光光强越小,减小的幅度是随着M态寿命的增加而减小,当M态寿命τ>50s时,减小的幅度几乎为零.在相同的入射光情况下,对于输出图像的相同位置,输入图像的运动速度越大,其输出的蓝光光强越大.Effect of the non-uniform input image on the characteristics of output image for the optical novelty filter based bacteriorhodopsin film was investigated. In contrast to the input image with uniform light distribution, when the incident intensity of the blue and yellow beam changes as the sine function, the light distribution of the output image changes non-monotonically and there are two peaks with weak intensity value between them. The lifetime τ of M state and the velocity of the object also affect the light distribution on the output image. The longer the lifetime τ of M state, the smaller the transmitted intensity of the blue light, and the reduction in intensity decreases with increasing lifetime τ, approaching a value practically equal to zero when τ is longer than 50 s. Under the same incident intensity, the intensity of the blue beam at the corresponding position of the output image increases with the increase of velocity of the input image.

关 键 词：细菌视紫红质膜 新事物滤波器 非均匀输入图像 输出特性 

分 类 号：O484.41[理学—固体物理]