Metasurfaces for Optical Antireflection and Bandpass Filters

Hou Tong Chen*, Chun Chieh Chang, Beibei Zeng, Li Huang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


We experimentally demonstrate bilayer metasurfaces for optical antireflection. The metasurfaces consist of a square array of silicon pillars with self-aligned top gold resonators and complementary bottom gold slots, enabling near-zero reflection and simultaneously close-to-unity transmission at designed operational frequencies in the terahertz and mid-infrared spectral regions. We further demonstrate THz bandpass filters based on stacked bilayer metasurfaces, allowing fairly narrow, fast roll-off, and high-transmission bandpass performance, with an extremely clean background outside the passband.

Original languageEnglish
Pages (from-to)485-486
Number of pages2
JournalInternational Conference on Metamaterials, Photonic Crystals and Plasmonics
Publication statusPublished - 2019
Externally publishedYes
Event10th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2019 - Lisbon, Portugal
Duration: 2019 Jul 232019 Jul 26

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Materials Science (miscellaneous)
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry


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