Analysis on the surface-enhanced circular dichroism spectroscopy

Seojoo Lee, Seok Jae Yoo, Q. Han Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Circular dichroism (CD), the difference in absorption of two opposite circularly polarized light by chiral molecules. Based on the generalized Poynting's theorem for chiral media, we reveal the origin of the CD in the chiral molecule/ nanostructure system. We find that CD enhancement arises through two distinct CD channels - inherent and induced. The inherent CD channel is direct molecular CD enhanced by strongly localized optical helicity density near the nanostructure. The induced CD channel, previously ignored, is asymmetric excitation and absorption of electromagnetic fields inside nanostructures surrounded by chiral molecules. We demonstrate that the induced CD channel can be significant in CD signals of entire system.

Original languageEnglish
Title of host publicationConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017
PublisherOptica Publishing Group (formerly OSA)
ISBN (Print)9781509062904
Publication statusPublished - 2017
EventConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 - Singapore, Singapore
Duration: 2017 Jul 312017 Aug 4

Publication series

NameOptics InfoBase Conference Papers
VolumePart F122-CLEOPR 2017
ISSN (Electronic)2162-2701


OtherConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017

Bibliographical note

Funding Information:
‡These authors contributed equally. This work was supported by the Samsung Science and Technology Foundation under Project No. SSTF- BA1401-05.

Publisher Copyright:
© 2018 Optics InfoBase Conference Papers. All rights reserved.


  • Biosensing
  • Chirality
  • Circular dichroism
  • Component

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials


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