Broadband angular selectivity of light at the nanoscale: Progress, applications, and outlook
Name
Soljacic_Broadband angular selectivity.pdf
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3.34 MB
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Adobe PDF
Checksum (MD5)
ac49740dbadf4678a098b054794048b7
Author(s)
Shen, Yichen
Hsu, Chia Wei
Yeng, Yi Xiang
Joannopoulos, John D.
Soljačić, Marin
Yeng, YiXiang
Joannopoulos, John
Soljacic, Marin
Date Issued
February 2016
Journal
Applied Physics Reviews
Publisher
American Institute of Physics (AIP)
Citation
Shen, Yichen; Hsu, Chia Wei; Yeng, Yi Xiang; Joannopoulos, John D. and Soljačić, Marin. "Broadband angular selectivity of light at the nanoscale: Progress, applications, and outlook." Applied Physics Reviews 3, no 1 (February 2016).
Version
Original manuscript
Abstract
Humankind has long endeavored to control the propagation direction of light. Since time immemorial, shades, lenses, and mirrors have been used to control the flow of light. In modern society, with the rapid development of nanotechnology, the control of light is moving toward devices at micrometer and even nanometer scales. At such scales, traditional devices based on geometrical optics reach their fundamental diffraction limits and cease to work. Nano-photonics, on the other hand, has attracted wide attention from researchers, especially in the last decade, due to its ability to manipulate light at the nanoscale. This review focuses on the nano-photonics systems that aim to select light based on its propagation direction. In the first half of this review, we survey the literature and the current state of the art focused on enabling optical broadband angular selectivity. The mechanisms we review can be classified into three main categories: (i) microscale geometrical optics, (ii) multilayer birefringent materials, and (iii) Brewster modes in plasmonic systems, photonic crystals, and metamaterials. In the second half, we present two categories of potential applications for broadband angularly selective systems. The first category aims at enhancing the efficiency of solar energy harvesting, through photovoltaic process or solar thermal process. The second category aims at enhancing light extracting efficiency and detection sensitivity. Finally, we discuss the most prominent challenges in broadband angular selectivity and some prospects on how to solve these challenges.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
https://doi.org/10.1063/1.4941257
