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Electrifying photonic metamaterials for tunable nonlinear optics
Lei Kang1, Yonghao Cui1, Shoufeng Lan2
11] School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA [2].
Nature Communications
|August 12, 2014
Summary
Researchers developed active metamaterials with tunable optical properties. These novel nonlinear metamaterials demonstrate electrically controlled light frequency conversion, paving the way for dynamic electro-optic systems.
Area of Science:
- Photonics and Nanotechnology
- Materials Science
Background:
- Metamaterials offer unique optical properties beyond natural materials.
- Active and nonlinear metamaterials enable tunable and intensity-dependent optical responses, respectively.
Purpose of the Study:
- To explore the synergy between active and nonlinear metamaterials.
- To demonstrate electrically controlled nonlinear optical processes in nanostructured metamaterials.
Main Methods:
- Leveraging simultaneous electrical and optical functions in nanostructured metals.
- Utilizing metamaterial absorbers to enhance nonlinear optical effects.
- Modulating nonlinear processes with applied voltage signals.
Main Results:
- Demonstrated electrically controlled second harmonic generation.
- Showcased voltage-modulated optical rectification.
- Observed enhancement of nonlinear processes due to metamaterial resonance.
Conclusions:
- Optical metamaterials can function as integrated electro-optic systems.
- Embedded electrical functions and optical nonlinearities offer dynamic control.
- Presents a new avenue for designing self-contained, tunable optical devices.
