The mechanisms of photoinduced microstructures in an azobenzene polymer film are presented.They are based on the spatial periodic modulation of optical intensity and the photoisomerization of azobenzene molecules with...The mechanisms of photoinduced microstructures in an azobenzene polymer film are presented.They are based on the spatial periodic modulation of optical intensity and the photoisomerization of azobenzene molecules with the movement of main chains.Experiment and theory jointly point out the possibility of photoinducing desired spatial microstructures in azobenzene organic polymer via adequate optical lattices and adequately polarized‘writing’beams.展开更多
Optical storage caused by photo-induced anisotropy in poly[3-methyl-4-bis(N,N-oxyethylene)imino-4-nitro-azobenzene sebacoyl]film is studied by degenerate four-wave mixing.Molecule orientation gratings which are stable...Optical storage caused by photo-induced anisotropy in poly[3-methyl-4-bis(N,N-oxyethylene)imino-4-nitro-azobenzene sebacoyl]film is studied by degenerate four-wave mixing.Molecule orientation gratings which are stable for three months are produced.The grating in the sample can be“erased”by using circular polarized light.So an azobenzene polymer thin film can be used many times to restore optical information.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.19604015Natural Science Foundation of Guangdong Province under Grant No.980279.
文摘The mechanisms of photoinduced microstructures in an azobenzene polymer film are presented.They are based on the spatial periodic modulation of optical intensity and the photoisomerization of azobenzene molecules with the movement of main chains.Experiment and theory jointly point out the possibility of photoinducing desired spatial microstructures in azobenzene organic polymer via adequate optical lattices and adequately polarized‘writing’beams.
基金Supported by the Natural Science Foundation of Guangdong ProvinceSpecial Research Foundation of Doctorate Station in University of China.
文摘Optical storage caused by photo-induced anisotropy in poly[3-methyl-4-bis(N,N-oxyethylene)imino-4-nitro-azobenzene sebacoyl]film is studied by degenerate four-wave mixing.Molecule orientation gratings which are stable for three months are produced.The grating in the sample can be“erased”by using circular polarized light.So an azobenzene polymer thin film can be used many times to restore optical information.
