Optical Yagi-Uda nanoantennas

Nanophotonics

article

Ivan S. Maksymov¹  Isabelle Staude¹  Andrey E. Miroshnichenko¹  Yuri S. Kivshar¹ 

[1]Nonlinear Physics Center and Center for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, The Australian National University

关键词: Optical nanoantennas;    Yagi-Uda antennas;    all-dielectric nanoantennas;    plasmonics;    nanoparticles;    spectral tuning;    Purcell factor;   

DOI  :  10.1515/nanoph-2012-0005

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Conventional antennas, which are widely employed to transmit radio and TV signals, can be used at optical frequencies as long as they are shrunk to nanometer-size dimensions. Optical nanoantennas made of metallic or high-permittivity dielectric nanoparticles allow for enhancing and manipulating light on the scale much smaller than wavelength of light. Based on this ability, optical nanoantennas offer unique opportunities regarding key applications such as optical communications, photovoltaics, nonclassical light emission, and sensing. From a multitude of suggested nanoantenna concepts the Yagi-Uda nanoantenna, an optical analogue of the well-established radio-frequency Yagi-Uda antenna, stands out by its efficient unidirectional light emission and enhancement. Following a brief introduction to the emerging field of optical nanoantennas, here we review recent theoretical and experimental activities on optical Yagi-Uda nanoantennas, including their design, fabrication, and applications. We also discuss several extensions of the conventional Yagi-Uda antenna design for broadband and tunable operation, for applications in nanophotonic circuits and photovoltaic devices.

【 授权许可】

CC BY