TY - JOUR
T1 - The mechanism of optical chirality enhancement in vertical-cut slant-gap antenna
AU - Chen, Yu Yu
AU - Lin, Chia Yi
AU - Gilbert Chang, Shih Hui
N1 - Funding Information:
We thank the Taiwan Ministry of Science and Technology for funding this study under Grant No. MOST-109-2112-M-006-017.
Publisher Copyright:
© 2021 The Japan Society of Applied Physics
PY - 2021/7
Y1 - 2021/7
N2 - 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.
AB - 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.
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U2 - 10.35848/1347-4065/ac0d14
DO - 10.35848/1347-4065/ac0d14
M3 - Article
AN - SCOPUS:85110474964
SN - 0021-4922
VL - 60
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 7
M1 - 070907
ER -