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Updated: May 12, 2026

Fabricating Metamaterials Using the Fiber Drawing Method

Fabricating Metamaterials Using the Fiber Drawing Method

Published on: October 18, 2012

Terahertz optically tunable dielectric metamaterials without microfabrication.

Carlo Rizza¹, Alessandro Ciattoni, Lorenzo Columbo

¹Dipartimento di Scienza e Alta Tecnologia, Università dell’Insubria, via Valleggio 11, Como I-22100, Italy.

|April 19, 2013

Summary

This study explores terahertz dielectric response in semiconductor gratings. Researchers demonstrate tunable optical properties, achieving exotic metamaterial behaviors without complex fabrication.

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Area of Science:

Solid-state physics
Metamaterials
Terahertz optics

Background:

Semiconductor slabs can exhibit unique optical properties.
Photogenerated gratings offer tunable responses.
Terahertz (THz) dielectric response is crucial for advanced optics.

Purpose of the Study:

To theoretically investigate the THz dielectric response of a semiconductor slab with a tunable photogenerated grating.
To explore the potential for creating novel optical metamaterials without microfabrication.

Main Methods:

Theoretical investigation using electromagnetic full-wave simulation.
Coupling simulations with charge carrier dynamics excited by infrared (IR) radiation.
Numerical evaluation of the effective permittivity tensor components.

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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

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Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Published on: March 23, 2017

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Fabricating Metamaterials Using the Fiber Drawing Method

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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Published on: March 23, 2017

Main Results:

The grating period was significantly smaller than the THz wavelength.
The photo-induced metamaterial optical response was tunable.
Observed responses ranged from birefringent to hyperbolic to anisotropic negative dielectric.

Conclusions:

Tunable photogenerated gratings in semiconductor slabs offer a versatile platform for THz metamaterials.
This approach allows for tailoring dielectric properties without microfabrication.
The findings pave the way for novel THz optical devices.