Broad Palettes of Polarizing Structural Color Filter Based on Subwavelength Metallic Nanograting
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Broad Palettes of Polarizing Structural Color Filter Based on Subwavelength Metallic Nanograting Sixian Ren 1 & Lei Zhou 1,2
&
Jinpeng Yang 1 & Yun Zhou 3,4
Received: 6 May 2020 / Accepted: 24 August 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract We propose a new polarizing color filter (CF) design based on one-dimensional subwavelength grating. The proposed CF only allows the transverse magnetic (TM)–polarized light transmission with the desired colors, and broad palettes can be acquired by only tuning the geometric parameter of period. Specifically, the transmittances of 74.7%, 87.9%, and 84.5% are obtained for the blue, green, and red polarizing filters. Furthermore, the corresponding full width at half-maximum is less than 58 nm for the designed tricolor filters. Theoretical analyses demonstrate that cavity modes and guide mode resonant contribute to the enhanced optical TM polarized light transmission. Keywords Color filter . Polarization . Metal grating . Surface plasmons
Introduction Structural color filters (CFs), which usually take advantage of geometry-dependent spectra resonance at the nanoscale, have gained amount of interest in numerous fields, such as display technology, photorealistic color printing, anticounterfeiting, decorative applications, light-emitting products, and so forth [1–4]. Compared with the conventional toxic colors generated from chemical dye/pigments via light emission or absorption, the structural color filters exhibit attractive merits including high resolution, cost effectiveness, fine compactness, environment friendliness, and superior durability [5–7]. Specifically, polarizing
* Lei Zhou [email protected] * Jinpeng Yang [email protected] 1
College of Physical Science and Technology, Yangzhou University, Yangzhou 225009, People’s Republic of China
2
Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huai’an 223003, People’s Republic of China
3
School of Optoelectronics Science and Technology & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, People’s Republic of China
4
BOE Optical Science and Technology Co., Ltd, Suzhou 215021, People’s Republic of China
structural transmission color filters delivered dual functions as a polarizer and a color filter, which is among the various structural color filters, have also received considerable attention in recent years due to various potential applications encompassing liquid crystal displays (LCDs), projection systems, and so on [8]. For example, Kanamori et al. reported polarizing transmission color filters using onedimensional (1D) silicon subwavelength grating on quartz substrates, achieving transmittances of 71.1%, 58.1%, and 59.3% for the red, green, and blue filters, respectively [9]. Huu and co-workers designed a double-layer grating architecture using a hybrid scheme comprising the rigorous coupled-wave analysis (RCWA) method and a genetic algorithm, realizing a transmission of ~ 50% and corresponding ex
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