Journal
OPTICS COMMUNICATIONS
Volume 367, Issue -, Pages 144-148Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2016.01.036
Keywords
Metasurface; Wavefront manipulation; High contrast grating; Subwavelength grating lens; Beam deflecting
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Funding
- Natural Science Foundation of Jiangsu Province of China [BK20130870, BK20130859, BK20150861]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [13KJB510019]
- NUPTSF [NY213008, NY213010, NY214027, NY214030]
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We propose visible-light metasurfaces (VLMs) capable of serving as lens and beam deflecting element based on gallium nitride (GaN) high contrast gratings (HCGs). By precisely manipulating the wavefront of the transmitted light, we theoretically demonstrate an HCG focusing lens with transmissivity of 86.3%, and a VLM with beam deflection angle of 6.09 and transmissivity as high as 91.4%. The proposed all dielectric metasurfaces are promising for GaN-based visible light-emitting diodes (LEDs), which would be robust and versatile for controlling the output light propagation and polarization, as well as enhancing the extraction efficiency of the LEDs. (C) 2016 Elsevier B.V. All rights reserved.
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