Specific intensity profiles for designed light-induced index distributions in photorefractive crystals

Peng Zhang, Jianlin Zhao, Yidong Sun, Honglai Xu, Dexing Yang

科研成果: 期刊稿件会议文章同行评审

摘要

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.

源语言英语
页(从-至)802-806
页数5
期刊OSA Trends in Optics and Photonics Series
99
出版状态已出版 - 2005
活动10th International Conference on Photorefractive, Effects, Materials, and Devices - Hainan, 中国
期限: 19 7月 200523 7月 2005

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