基于琼斯矩阵和菌紫质分子光循环的简化光循环模型,建立了紫光诱导同圆偏振记录光栅的理论模型,采用四波耦合光路测量菌紫质光栅的衍射效率.理论模拟和实验结果表明:加入线偏振的辅助紫光,线偏振再现光与线偏振辅助紫光相互平行时,菌紫质光栅的衍射效率最大;线偏振再现光与线偏振辅助紫光相互垂直时,菌紫质光栅的衍射效率最小;菌紫质薄膜中同圆偏振记录光栅的稳态衍射效率随线偏振再现光偏振方向和线偏振辅助紫光偏振方向之间的夹角按余弦规律变化.线偏振紫光能诱导同圆偏振记录光栅由非偏振光栅转化为偏振光栅.

A theoretical model for calculating the diffraction efficiency kinetics of the grating recorded by two parallel circular polarized recording beams was proposed,based on Jones-matrix and photochromic two-state theory.The diffraction efficiency of bacteriorhodopsin grating was measured by system of four-wave coupled light path.The theoreical analysis and the experimental results show that,in the condition of adding linearly polarized auxiliary violet light,when linearly polarized reconstruction light parallel with linearly polarized auxiliary violet light,the diffraction efficiency of bacteriorhodopsin grating is maximum;when linearly polarized reconstruction light perpendicular to linearly polarized auxiliary violet light,the diffraction efficiency of bacteriorhodopsin grating is minimum.The angle between linearly polarized reconstruction light and linearly polarized auxiliary violet light produces a cosine modulation on the kinetics of the diffraction efficiency.It indicates that parallel circular polarization recorded grating in bacteriorhodopsin induced by polarized violet light became polarizing grating.