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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Saddle solitons: a balance between bi-diffraction and hybrid nonlinearity
1The Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education and TEDA Applied Physics School, Nankai University, Tianjin 300457, China.
Optics Letters
|November 3, 2009
Summary
Researchers achieved self-trapping of light by balancing diffractions and nonlinearities in photonic lattices. This led to the creation of novel two-dimensional "saddle solitons" with unique properties.
Area of Science:
- Nonlinear optics
- Photonics
- Condensed matter physics
Background:
- Spatial solitons are fundamental in nonlinear optics, exhibiting self-trapping of light.
- Photonic lattices offer a platform to control light propagation.
- Hybrid nonlinearities combine different optical effects.
Purpose of the Study:
- To demonstrate self-trapping of light in optically induced ionic-type photonic lattices.
- To compensate simultaneously for normal and anomalous diffractions.
- To establish novel two-dimensional gap solitons with unique characteristics.
Main Methods:
- Utilizing hybrid nonlinearity (self-focusing and self-defocusing) in photonic lattices.
- Inducing ionic-type photonic lattices optically.
- Analyzing the formation and properties of two-dimensional gap solitons.
Main Results:
- Achieved simultaneous compensation of normal and anomalous diffractions.
- Demonstrated self-trapping of light.
- Established innovative two-dimensional gap solitons, termed "saddle solitons."
- Observed distinct phase and spectrum characteristics for saddle solitons compared to previous spatial solitons.
Conclusions:
- Self-trapping of light is possible through simultaneous diffraction compensation and hybrid nonlinearities.
- "Saddle solitons" represent a new class of spatial solitons with unique optical properties.
- Optically induced ionic-type photonic lattices provide a versatile platform for fundamental optical research.
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