Nonlocality-induced polarization beam splitting via metal-dielectric composites
Received:November 25, 2018  Revised:May 29, 2019  download
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Author NameAffiliationE-mail
Dunjian Wang School of Physical Science and Technology,Soochow University djvanoliver@163.com 
Sucheng Li Shenzhen Kuang-Chi Institute of Advanced Technology  
Wenjie Ji School of Physical Science and Technology,Soochow University  
Wei Xiong Shenzhen Kuang-Chi Institute of Advanced Technology  
Lei Zhang Shenzhen Kuang-Chi Institute of Advanced Technology  
Yuanfang Shang Shenzhen Kuang-Chi Institute of Advanced Technology  
Jie Luo School of Physical Science and Technology,Soochow University  
Abstract:Nonlocality excited by surface plasmons in metal-dielectric composites leads to many interesting effects and applications. Here, we show that by using a simple metal-dielectric multilayered structure with strong nonlocality, three kinds of polarization beam splitters can be designed. It is found that the equal frequency contour for the transverse electric polarization is a small circle when the average permittivity is close to zero. At the same time, the equal frequency contour for the transverse magnetic polarization turns be two branches of parabolas due to surface plasmon-induced nonlocal effect. Based on the dramatic difference between dispersions of the two polarizations, three kinds of polarization beam splitters are demonstrated, including the ultrathin ones, which may have important applications in polarization-sensitive absorbers and compact optical devices.
keywords:Nonlocality  Polarization beam splitters  Zero-index media  Metal-dielectric composites
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Copyright:《Journal of Infrared And Millimeter Waves》