Linearly dichroic plasmonic lens and hetero-chiral structures

Optics Express
Grisha SpektorMeir Orenstein

Abstract

We present an experimental study of Hetero-Chiral (HC) plasmonic lenses, comprised of constituents with opposite chirality, demonstrating linearly dichroic focusing. The lenses focus only light with a specific linear polarization and result in a dark focal spot for the orthogonal polarization state. We introduce the design concepts and quantitatively compare several members of the HC family, deriving necessary conditions for linear dichroism and several comparative engineering parameters. The HC lenses were experimentally investigated using aperture-less near field scanning microscope collecting the amplitude of the plasmonic near-field. Our results exhibit an excellent match to the simulation predictions. The demonstrated ability for linearly dichroic functional focusing could lead to novel sensing applications.

References

Dec 20, 2003·Physical Review Letters·A S SchwaneckeN I Zheludev
Sep 15, 2005·Nano Letters·Zhaowei LiuXiang Zhang
Jun 20, 2006·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·P LalanneJ C Rodier
Sep 4, 2008·Physical Review Letters·Y GorodetskiE Hasman
Jun 27, 2009·Nano Letters·Yuri GorodetskiErez Hasman
Oct 20, 2009·Optics Letters·Shuangyang YangQiwen Zhan
Dec 29, 2010·Nano Letters·Zheyu FangXing Zhu
Jan 26, 2012·Optics Express·K A BachmanR E Hollingsworth
Aug 5, 2015·Nano Letters·Grisha SpektorMeir Orenstein

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Citations

Aug 27, 2016·Scientific Reports·Qingrui GuoXinhua Hu
Aug 13, 2021·Science Advances·Grisha SpektorMeir Orenstein

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