| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1540464 | Optics Communications | 2007 | 5 Pages |
Abstract
A comprehensive technique has been used to detect diffraction from the second and the third nonlinear spatial harmonic components, along with the fundamental harmonic of volume photorefractive gratings recorded in a channel waveguide in a LiNbO3 substrate. For the first time to our knowledge, efficient diffraction from the higher spatial harmonic components of a photorefractive grating has been detected in reflection geometry. The dependence of a Bragg wavelength shift on the order of nonlinearity is also reported.
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Authors
P. Arora, V.M. Petrov, J. Petter, T. Tschudi,