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Soliton mobility in nonlocal optical lattices
Zhiyong Xu1, Yaroslav V Kartashov, Lluis Torner
1ICFO-Institut de Ciencies Fotoniques and Universitat Politecnica de Catalunya, Barcelona, Spain.
Physical Review Letters
|October 4, 2005
Summary
Nonlocality significantly impacts soliton mobility in nonlinear optical lattices. Increased nonlocality reduces the Peierls-Nabarro potential, enabling nearly radiationless soliton propagation.
Area of Science:
- Nonlinear Optics
- Condensed Matter Physics
Background:
- Solitons are self-reinforcing wave packets.
- Kerr-type nonlinear media exhibit intensity-dependent refractive indices.
- Optical lattices create periodic potential landscapes for light.
Purpose of the Study:
- To investigate the influence of nonlocality on soliton behavior.
- To analyze the effect of nonlinear response nonlocality on soliton mobility.
- To explore the implications for soliton propagation in optical lattices.
Main Methods:
- Theoretical analysis of solitons in nonlinear media.
- Modeling of nonlinear response with varying degrees of nonlocality.
- Investigation of the Peierls-Nabarro potential for soliton motion.
Main Results:
- Nonlocality profoundly affects soliton mobility and related phenomena.
- Increased nonlocality significantly reduces the Peierls-Nabarro potential.
- This reduction facilitates nearly radiationless soliton propagation.
Conclusions:
- Nonlocality is a critical factor in soliton dynamics within optical lattices.
- Tailoring nonlocality offers a pathway to control soliton propagation.
- The findings suggest possibilities for robust, low-loss optical soliton transmission.