Thermal tunability in terahertz metamaterials fabricated on strontium titanate single-crystal substrates.

We report an experimental demonstration of thermal tuning of resonance frequency in a planar terahertz metamaterial consisting of a gold split-ring resonator array fabricated on a bulk single-crystal strontium titanate (SrTiO₃) substrate. Cooling the metamaterial starting from 409 K down to 150 K causes about a 43% shift in resonance frequency, and there is very little variation in resonance strength. The resonance shift is due to the temperature-dependent dielectric constant of the strontium titanate. The experiment opens up avenues for designing tunable terahertz devices by exploiting the temperature-sensitive characteristic of high dielectric constant substrates and complex metal oxide materials.

• Publication year

  2011

• Venue

  Optics Letters

• Publication date

  2011-02-17

• Fields of study

  Medicine, Materials Science, Physics

• Identifiers
  DOI 10.1364/OL.36.001230arXiv 1102.3507PMID 21479039
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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