Tunable terahertz plasmonic lenses based on semiconductor microslits

Meng Ku Chen, Yun Ching Chang, Chia En Yang, Yaohui Guo, John Mazurowski, Stuart Yin, Paul Ruffin, Christina Brantley, Eugene Edwards, Claire Luo

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


A theoretical investigation of tunable terahertz (THz) plasmonic lenses on the basis of InSb microslits is presented. First, it is demonstrated that the surface plasmon polaritons propagating in an InSb microslit array with variant slit widths would face different phase retardations, which, by design, can produce a focusing wavefront. The extraordinary transmission of THz radiation through the InSb subwavelength slit array is also observed. Second, a method for tuning the focal lengths of InSb plasmonic lenses is proposed. The results in this article provide a potential way to realize a tunable terahertz plasmonic lens with high transmission, which can be applied to the application of rapid 3D z-scanning based THz imaging and sensing.

Original languageEnglish (US)
Pages (from-to)979-981
Number of pages3
JournalMicrowave and Optical Technology Letters
Issue number4
StatePublished - Apr 2010

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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