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Nonlinear BLOCH-wave interaction and bragg scattering in optically induced lattices.
Andrey A Sukhorukov1, Dragomir Neshev, Wieslaw Krolikowski
1Nonlinear Physics Group and Laser Physics Center, Center for Ultra-high bandwidth Devices for Optical Systems (CUDOS), Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia.
Physical Review Letters
|April 20, 2004
Summary
This study explores light Bragg scattering in photonic lattices, revealing mechanisms for nonlinear beam self-action. These findings enable selecting specific effective dispersion bands in optical materials.
Area of Science:
- Optics and Photonics
- Nonlinear Optics
- Condensed Matter Physics
Background:
- Bragg scattering is a fundamental phenomenon in periodic structures.
- Photonic lattices offer tunable optical properties.
- Nonlinear self-action affects light propagation in optical media.
Purpose of the Study:
- To investigate the interplay between Bragg scattering and diffraction in photonic lattices.
- To elucidate the physical mechanisms governing nonlinear beam self-action.
- To demonstrate the selection of specific effective dispersion bands.
Main Methods:
- Theoretical modeling of light propagation.
- Experimental realization of optically induced photonic lattices.
- Analysis of narrow beam dynamics under nonlinear effects.
Main Results:
- Identified key physical mechanisms for nonlinear self-action.
- Demonstrated control over effective dispersion bands.
- Validated theoretical predictions through experimental observations.
Conclusions:
- Bragg scattering and diffraction synergistically control nonlinear beam behavior.
- Photonic lattices provide a versatile platform for manipulating light dispersion.
- The study offers insights into designing advanced optical materials and devices.