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Journal of the Korean Physical Society

, Volume 74, Issue 2, pp 164–167 | Cite as

Extraordinary Transmission of Light Through Freestanding Au Films with Subwavelength Apertures and Double Slits

  • Hyuntae Kim
  • Soobong ChoiEmail author
  • Seong Soo Choi
  • Woongkyu Park
  • Clare Chisu Byeon
Article
  • 5 Downloads

Abstract

We demonstrated the extraordinary transmission of light through a freestanding Au thin film with a 7×7 subwavelength aperture array and double slits. Firstly, we observed the dependence of the change in the light transmission through a plasmonic structure on the pitch size of the aperture array. Also, we fabricated a freestanding Au thin film to avoid the effects of absorption and reflection of the substrate. We perforated the 7×7 subwavelength hole array on the Au film for extraordinary optical transmission caused by the electric field enhancement from the structures. Additionally, we designed a hybrid structure composed of 7×7 subwavelength apertures and double slits to enhance the transmission of the light. The normalized-to-area transmission of the hybrid structures was approximately five times greater than that of the structures without double slits.

Keywords

Freestanding metal film Plasmonics Double slits Optical waveguiding 

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Copyright information

© The Korean Physical Society 2019

Authors and Affiliations

  • Hyuntae Kim
    • 1
  • Soobong Choi
    • 1
    Email author
  • Seong Soo Choi
    • 2
  • Woongkyu Park
    • 3
  • Clare Chisu Byeon
    • 4
  1. 1.Department of PhysicsIncheon National UniversityIncheonKorea
  2. 2.Research Center for Nanobio ScienceSunMoon UniversityAhsanKorea
  3. 3.Department of Physics and Astronomy and Center for Atom Scale ElectromagnetismSeoul National UniversitySeoulKorea
  4. 4.School of Mechanical EngineeringKyungpook National UniversityDaeguKorea

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