Locally Enhanced and Tunable Optical Chirality in Helical Metamaterials
نویسندگان
چکیده
منابع مشابه
Locally Enhanced and Tunable Optical Chirality in Helical Metamaterials
We report on a numerical study of optical chirality. Intertwined gold helices illuminated with plane waves concentrate right and left circularly polarized electromagnetic field energy to sub-wavelength regions. These spots of enhanced chirality can be smoothly shifted in position and magnitude by varying illumination parameters, allowing for the control of light-matter interactions on a nanomet...
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Tang and Cohen [Phys. Rev. Lett.104, 163901 (2010)] recently demonstrated a scheme to enhance the chiral response of molecules, which relies on the use of circularly polarized light in a standing wave configuration. Here we show a new type of light that possesses orbital angular momentum and enhanced chiral response. In the locations where the beams show enhanced optical chirality, only the lon...
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ژورنال
عنوان ژورنال: Photonics
سال: 2016
ISSN: 2304-6732
DOI: 10.3390/photonics3040060