title: Kinetics of polarization gratings assisted with polarized violet light in bacteriorhodopsin films.
abstract: Polarization gratings can be recorded in bacteriorhodopsin films by an orthogonal pair of linearly or circularly polarized beams. If a linearly polarized auxiliary violet light is added during the grating formation, the grating becomes polarization-sensitive. A theoretical model based on the two-state photochromic theory is proposed to calculate the diffraction efficiency kinetics of these polarization gratings. In both cases, the additional linearly polarized auxiliary violet irradiation improves the steady-state diffraction efficiency and leads to a cosine modulation of the steady-state diffraction efficiency by the polarization orientation of the readout beam. Experiment results demonstrate the correctness of the theoretical model.
authors: Xianghua
authors: X
authors: Yu
authors: Peng
authors: P
authors: Gao
authors: Baoli
authors: B
authors: Yao
authors: Ming
authors: M
authors: Lei
authors: Romano
authors: R
authors: Rupp
mesh_terms: D016880:Anisotropy; D001436:Bacteriorhodopsins / Q000737:chemistry* / Q000235:genetics*; D003116:Color; D019617:Halobacterium salinarum / Q000502:physiology; D006696:Holography / Q000379:methods; D007091:Image Processing, Computer-Assisted; D007700:Kinetics; D008027:Light; D008962:Models, Theoretical; D009154:Mutation; D010777:Photochemistry
chemical_list: D001436:Bacteriorhodopsins