The mechanism of optical chirality enhancement in vertical-cut slant-gap antenna

Yu Yu Chen, Chia Yi Lin, Shih Hui Gilbert Chang

Research output: Contribution to journalArticlepeer-review


The mechanism of optical chirality enhancements (OCE) in slant-gap antenna with vertical-cut configuration by normal and oblique incident light with linear polarization is demonstrated. The main contribution of OCE is originated from the inner product of the incident H field and the localized surface plasmon resonant (LSPR) evanescent E field. The pure LSPR near-field term E·H gives a net zero contribution. Based on these findings, we can accurately count for the asymmetric OCE distribution due to the substrate effect. The detailed analysis of OCE contribution might provide a route for designing a more efficient chiral molecule sensor.

Original languageEnglish
Article number070907
JournalJapanese journal of applied physics
Issue number7
Publication statusPublished - 2021 Jul

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Physics and Astronomy


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