Circularly polarized light detection with hot electrons in chiral plasmonic metamaterials

Wei Li, Zachary J. Coppens, Lucas V. Besteiro, Wenyi Wang, Alexander O. Govorov and Jason Valentine ()
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Wei Li: Vanderbilt University
Zachary J. Coppens: Vanderbilt University
Lucas V. Besteiro: Ohio University
Wenyi Wang: Vanderbilt University
Alexander O. Govorov: Ohio University
Jason Valentine: Vanderbilt University

Nature Communications, 2015, vol. 6, issue 1, 1-7

Abstract: Abstract Circularly polarized light is utilized in various optical techniques and devices. However, using conventional optical systems to generate, analyse and detect circularly polarized light involves multiple optical elements, making it challenging to realize miniature and integrated devices. While a number of ultracompact optical elements for manipulating circularly polarized light have recently been demonstrated, the development of an efficient and highly selective circularly polarized light photodetector remains challenging. Here we report on an ultracompact circularly polarized light detector that combines large engineered chirality, realized using chiral plasmonic metamaterials, with hot electron injection. We demonstrate the detector’s ability to distinguish between left and right hand circularly polarized light without the use of additional optical elements. Implementation of this photodetector could lead to enhanced security in fibre and free-space communication, as well as emission, imaging and sensing applications for circularly polarized light using a highly integrated photonic platform.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9379

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DOI: 10.1038/ncomms9379

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