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Updated: May 10, 2026
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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
Negative refraction, gain and nonlinear effects in hyperbolic metamaterials.
Christos Argyropoulos1, Nasim Mohammadi Estakhri, Francesco Monticone
1Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas 78712, USA.
Optics Express
|June 22, 2013
Summary
This study analyzes layered metamaterials for negative refraction and evanescent-wave canalization. Findings pave the way for improved hyperlenses and tunable nonlinear imaging devices.
Area of Science:
- Metamaterials
- Plasmonics
- Optics
Background:
- Layered metamaterials exhibit negative refraction and evanescent-wave canalization.
- These effects are crucial for subwavelength imaging and advanced optical devices.
Purpose of the Study:
- To theoretically analyze negative refraction and evanescent-wave canalization in layered metamaterials.
- To develop a rapid analysis method for negative refraction bandwidth broadening.
- To explore active and nonlinear layers for loss compensation and tunability.
Main Methods:
- Transmission-line analysis for rapid evaluation of negative refraction.
- Modeling of layered dielectric and plasmonic structures.
- Inclusion of active layers for loss compensation and nonlinear dielectrics for tunability.
Main Results:
- A method to rapidly analyze negative refraction and broaden its operational bandwidth.
- Demonstrated potential for loss compensation using active layers.
- Explored tunable optical responses (positive-to-zero-to-negative refraction) using nonlinear dielectrics.
Conclusions:
- Enhanced understanding of negative refraction and subwavelength imaging in metamaterials.
- Potential for designing gain-assisted hyperlenses and tunable nonlinear imaging devices.
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