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High intensity gap light coupling of nano-antenna to high Purcell factor photonic crystal nano cavity



  1. Department of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
  2. School of Engineering-Emerging Technologies, University of Tabriz, Tabriz, Iran


An efficient hybrid photonic-plasmonic structure which combines the resonant mode of an ultrahigh Purcell factor photonic crystal nano-cavity with plasmonic resonance of a bowtie nano-antenna with a high accuracy has been presented in this article. The consequential enormous light intensity enhancement of ~3×106 times in the gap region of the bowtie nanoantenna (in the coupled structure with respect to the incoming exciting light), originated from the effective optical resonance combination, is realized by subtle optimization of nano-cavity’s geometrical parameters. The designed coupled structure holds great promise for many applications and purposes trusting on strong confinement and enhancement of o ptical field in the volumes of nano-scale, including antennas, optical trapping and manipulation, sensors, data storage, nonlinear optics, lasers, etc.


Photonic crystal nano-cavity, High Purcell factor, Nano-antenna, Coupling.

Submitted at: Feb. 28, 2017
Accepted at: Aug. 9, 2017


N. EBADI, R. YADIPOUR, H. BAGHBAN, High intensity gap light coupling of nano-antenna to high Purcell factor photonic crystal nano cavity, Journal of Optoelectronics and Advanced Materials Vol. 19, Iss. 7-8, pp. 454-458 (2017)