Title :
High sensitivity dark mode plasmonic resonance of gold nanoantennas arrays in evanescent waves
Author :
Kuo-Ping Chen ; Yi-Hsun Chen ; Yu-Lun Kuo ; Zhen-hong Yang ; Che-Yuan Chang
Author_Institution :
Coll. of Photonics, Nat. Chiao Tung Univ., Tainan, Taiwan
Abstract :
Plasmonic dark modes of gold nanoantennas are observed in evanescent waves. Comparing with the bright mode for normal incidence of nanoantennas, dark mode resonance not only has a higher extinction coefficient but also achieves higher sensitivity to the surrounding environment. The sensitivity of the dark mode of gold nanoantenna is 4.84 times that of the bright mode in terms of the figure of merit.
Keywords :
extinction coefficients; gold; metamaterial antennas; nanophotonics; optical metamaterials; plasmonics; Au; bright mode; dark mode resonance; dark mode sensitivity; evanescent waves; extinction coefficient; figure of merit; gold nanoantenna arrays; high sensitivity dark mode plasmonic resonance; normal nanoantenna incidence; plasmonic dark modes; surrounding environment; Bonding; Couplings; Gold; Metamaterials; Plasmons; Sensitivity; Surface waves;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
