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  • Controlling Light with Light: Photorefractive Effects, Photosensitivity, Fiber Gratings, Photonic Materials and More
  • OSA Technical Digest (CD) (Optica Publishing Group, 2007),
  • paper TuB3
  • https://doi.org/10.1364/PR.2007.TuB3

Real-time Photoinduced Waveguides in Sn2P2S6 Bulk Crystals with Visible or Near Infrared Light

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Abstract

The dynamic creation of waveguides in photorefractive Sn2P2S6 is investigated in the case of a lateral properly shaped illumination, as well as in the case of a longitudinal soliton-like propagation of a self-focused near-infrared wave. It is shown that in this crystal lateral visible light can induce efficiently one-dimensional waveguides by means of conventional or interband photorefraction. A short waveguide formation time of the order of 0.1 ms is reached in the interband case. Efficient self-focusing for longitudinal propagation of a light wave at 1.06 µm wavelength in Te-doped crystals is also demonstrated. The corresponding response time of the self-focused waveguide is of the order of 1 to several milliseconds.

© 2007 Optical Society of America

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