https://scholars.lib.ntu.edu.tw/handle/123456789/396304
標題: | Manipulation of polarization and spatial properties of light beams with chiral metafilms | 作者: | Klimov, V.V. Zabkov, I.V. Pavlov, A.A. Shiu, R.-C. Chan, H.-C. GUANG-YU GUO |
公開日期: | 2016 | 卷: | 24 | 期: | 6 | 起(迄)頁: | 6172-6185 | 來源出版物: | Optics Express | 摘要: | Two-dimensional lattices of chiral nanoholes in a plasmonic film with lattice constants being slightly larger than light wavelength are proposed for effective control of polarization and spatial properties of light beams. Effective polarization conversion and strong circular dichroism in non-zero diffraction orders in these chiral metafilms are demonstrated by electromagnetic simulations. These interesting effects are found to result from interplay between radiation pattern of single chiral nanohole and diffraction pattern of the planar lattice, and can be manipulated by varying wavelength and polarization of incoming light as well as period of metastructure and refractive indexes of substrate and overlayer. Therefore, this work offers a novel paradigm for developing planar chiral metafilm-based optical devices with controllable polarization state, spatial orientation and intensity of outgoing light. © 2016 Optical Society of America. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84964017438&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/396304 |
ISSN: | 10944087 | DOI: | 10.1364/OE.24.006172 | SDG/關鍵字: | Dichroism; Diffraction; Lattice constants; Radiation effects; Refractive index; Diffraction orders; Electromagnetic simulation; Light wavelengths; Polarization conversion; Polarization state; Spatial orientations; Spatial properties; Two-dimensional lattices; Polarization |
顯示於: | 物理學系 |
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