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Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
Published on: May 27, 2020
Interface solitons excited between a simple lattice and a superlattice
Yi Hu1, Robert Egger, Peng Zhang
1Department of Physics and Astronomy, San Francisco State University, San Francisco, CA 94132, USA.
Optics Express
|July 20, 2010
Summary
We found new nonlinear surface states at the interface of photonic lattices. These interface solitons, including mixed-band gap solitons, exhibit unique phase structures under self-focusing conditions.
Area of Science:
- Nonlinear optics
- Condensed matter physics
- Photonics
Background:
- Photonic lattices offer a platform to study light propagation phenomena.
- Interface states in engineered materials are crucial for novel device functionalities.
- Nonlinear effects in periodic structures can lead to exotic wave phenomena.
Purpose of the Study:
- To investigate nonlinear surface states at the interface between simple and super photonic lattices.
- To identify and characterize different types of interface solitons.
- To explore the role of excitation conditions and self-focusing nonlinearity.
Main Methods:
- Numerical simulations of light propagation in photonic lattices.
- Experimental observation of interface states.
- Analysis of soliton phase structures.
Main Results:
- Demonstration of nonlinear surface states at the simple-super photonic lattice interface.
- Identification of various interface solitons, including dipole-like 'mixed-band' interface gap solitons.
- Correlation of soliton types with interface excitation conditions.
Conclusions:
- Nonlinear surface states can be engineered at the interface of dissimilar photonic lattices.
- Interface solitons exhibit distinct phase structures influenced by lattice properties and excitation.
- The findings open avenues for controlling light localization and propagation in complex optical systems.
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