Chinese Optics Letters, 2010, 8 (1): 18, Published Online: Mar. 1, 2010
Investigation on the phase shifts of extinction and phase gratings in polymethyl methacrylate Download: 534次
PMMA 光栅相移 光致聚合 090.0090 Holography 090.2900 Optical storage materials 160.0160 Materials 160.5470 Polymers
Abstract
The phase shifts of the extinction and refractive index gratings to the illumination pattern are revealed in doped polymethyl methacrylate (PMMA). The dynamic process of these shifts is studied via two-wave coupling at 351 nm. It is shown that these shifts are from the strain and the shrinkage inside the sample and accompanied with the photo-repolymerization process during the building process of the holographic grating. Such shifts will cause obvious energy exchange between the two recording beams and enough attention should be paid to the nonlocal property of the holographic gratings of the material in the application.
Wei Li, Baiquan Tang, Xinzheng Zhang, Feng Gao, Longchang Liu, Qiang Wu, Leiting Pan, Cibo Lou, Shangyu Guo, Romano A. Rupp, Jingjun Xu. Investigation on the phase shifts of extinction and phase gratings in polymethyl methacrylate[J]. Chinese Optics Letters, 2010, 8(1): 18.