细菌视紫红质激子的饱和密度及激子长度的研究  

Study on Saturation Density and Length of Excitons in Bacteriorhodopsin

作　　者：黄燕萍[1] 陈树德[1] 王祖赓[1] 李庆国[2] 

机构地区：[1]国家教委华东师范大学量子光学开放实验室,华东师范大学物理系上海200062 [2]复旦大学生物物理系,上海200433

出　　处：《中国激光》2001年第3期269-271,共3页Chinese Journal of Lasers

基　　金：国家自然科学基金! (编号 :39870 193)资助课题

摘　　要：对光能转换生物分子细菌视紫红质 (bR)作前向立体简并四波混频实验所测得的三阶非线性电极化率和它们的时间响应 ,用光循环结构模拟的三能级模型予以解释 ,并用位相空间充满理论模拟得到激子饱和密度和激子长度。The three-energy model simulated with photocycle characteristics used to explain bacteriorhodopsin's 3-order nonlinear susceptibility and its time response, which was measured with four-wave mixing technique. The saturation density and length of excitons in bacteriorhodopsin are obtained with fitting to the phase-space filling model. The possible mechanism for generating the 3rd nonlinear optical susceptibility χ(3) and response time are discussed.

关 键 词：细菌视紫红质 光敏生物分子 激子 饱和密度 激子长度 

分 类 号：TN241[电子电信—物理电子学]