Ultrafast Modulation of Optical Metamaterials

Abstract

We show by pump-probe spectroscopy that the optical response of a fishnet metamaterial can be modulated on the femtosecond time scale. The modulation dynamics is dominated by pump-induced changes in the constituting dielectric medium, but the strength of modulation is dramatically enhanced through the plasmon resonance. The pump-induced spectral responses of the metamaterial provide understanding on how the resonance is modified by pump excitation. Our study suggests that metamaterials can be used as high-speed amplitude/phase modulators with terahertz-bandwidth.

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Document Details

Document Type
Technical Report
Publication Date
Sep 28, 2009
Accession Number
ADA531893

Entities

People

  • Alexander M. Bratkovsky
  • David J. Cho
  • Ekaterina Ponizovskaya
  • Feng Wang
  • Pratik Chaturvedi
  • Shih-yuan Wang
  • Wei Wu
  • Xiang Zhang
  • Y. R. Shen

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Electromagnetic Fields
  • Electromagnetic Metamaterials
  • Femtosecond Time
  • Finite Difference Time Domain
  • Materials
  • Materials Science
  • Metamaterials
  • Modulation
  • Modulators
  • Negative Index Metamaterials
  • Optical Properties
  • Optics
  • Phase Modulators
  • Photonic Metamaterials
  • Refractive Index
  • Resonance
  • Surface Plasmon Resonance

Fields of Study

  • Physics

Readers

  • Nanofabrication and Microfabrication.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics