A technique based on self-imaging at finite conjugates has been experimentally demonstrated for visualization of laser-induced photorefractive gratings in BSO. A simple model theory has been used to provide the correct rules of geometrical optics of self-imaging. A novel technique has been used for photoinducing the periodic structure. An application has been made to determine the harmonic components of the nonsinusoidal refractive index modulation in the BSO for a grating period of 10 μm and for external DC voltages of 6.0 and 3.0 kV. The technique is directly applicable to the visualization and study of laser-induced gratings (LIG) in thin nonlinear optical media.
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Som, S.C., Ghorai, S.K. & Satpathi, A. Visualization of the photorefractive grating in BSO. Optical and Quantum Electronics 25, 241–253 (1993). https://doi.org/10.1007/BF00419001
- Refractive Index
- Simple Model
- Communication Network
- Model Theory
- Periodic Structure