TY - JOUR
T1 - Specific intensity profiles for designed light-induced index distributions in photorefractive crystals
AU - Zhang, Peng
AU - Zhao, Jianlin
AU - Sun, Yidong
AU - Xu, Honglai
AU - Yang, Dexing
PY - 2005
Y1 - 2005
N2 - The anisotropic features of the refractive index changes induced by a Gaussian beam and a top-flat square beam with different orientations are investigated both theoretically and experimentally. After that, an approach to obtain designed index distributions in photorefractive crystals by illuminations of light beams with specific intensity profiles is presented. By solving the reversed problem of the photorefractive process, the intensity distributions of the writing beams for obtaining a preassigned index profiles can be derived. Employing the writing beams with specific intensity profiles, various designed index distributions could be obtained. Gaussian type index distributions with circular symmetry are experimentally demonstrated in a slice of LiNbO3:Fe crystal by employing specific writing beams formed by the aid of a projector.
AB - The anisotropic features of the refractive index changes induced by a Gaussian beam and a top-flat square beam with different orientations are investigated both theoretically and experimentally. After that, an approach to obtain designed index distributions in photorefractive crystals by illuminations of light beams with specific intensity profiles is presented. By solving the reversed problem of the photorefractive process, the intensity distributions of the writing beams for obtaining a preassigned index profiles can be derived. Employing the writing beams with specific intensity profiles, various designed index distributions could be obtained. Gaussian type index distributions with circular symmetry are experimentally demonstrated in a slice of LiNbO3:Fe crystal by employing specific writing beams formed by the aid of a projector.
UR - http://www.scopus.com/inward/record.url?scp=33645236198&partnerID=8YFLogxK
M3 - 会议文章
AN - SCOPUS:33645236198
SN - 1094-5695
VL - 99
SP - 802
EP - 806
JO - OSA Trends in Optics and Photonics Series
JF - OSA Trends in Optics and Photonics Series
T2 - 10th International Conference on Photorefractive, Effects, Materials, and Devices
Y2 - 19 July 2005 through 23 July 2005
ER -