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Wideband High-Refle...
Wideband High-Reflection Chiral Dielectric Metasurface
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- Hu, Zhipeng (author)
- Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Peoples R China.
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- He, Nan (author)
- Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Peoples R China.;Zhejiang Univ, Shanghai Inst Adv Study, Shanghai 200000, Peoples R China.
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- Sun, Yuwei (author)
- Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Peoples R China.
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- Jin, Yi (author)
- Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Peoples R China.
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- He, Sailing (author)
- KTH,Elektroteknisk teori och konstruktion,Zhejiang-KTH Joint Research Center of Photonics, JORCEP,Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Peoples R China.;Zhejiang Univ, Shanghai Inst Adv Study, Shanghai 200000, Peoples R China.;Royal Inst Technol KTH, Sch Elect Engn, Dept Electromagnet Engn, S-10044 Stockholm, Sweden.
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Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Peoples R China Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Hangzhou 310058, Peoples R China.;Zhejiang Univ, Shanghai Inst Adv Study, Shanghai 200000, Peoples R China. (creator_code:org_t)
- EMW PUBLISHING, 2021
- 2021
- English.
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In: Progress In Electromagnetics Research. - : EMW PUBLISHING. - 1070-4698 .- 1559-8985. ; 172, s. 51-60
- Related links:
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https://doi.org/10.2...
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https://urn.kb.se/re...
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https://doi.org/10.2...
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Abstract
Subject headings
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- Compared to natural materials, artificial subwavelength structures can enhance chiroptical effects in a stronger way, and the requirement of low material loss and wideband operation is desired in many situations. Here, we propose an all-dielectric chiral metasurface as a periodic array of centrosymmetric staggered silicon cuboid pairs to achieve strong circular dichroism in a wide band. As a demonstration, the designed chiral metasurface may strongly reflect the chosen circularly polarized light with the spin preserved in the operating wavelength range of 1.51 ti 1.60 mu m while highly transmit (with an efficiency greater than 95%) the opposite circularly polarized light with the spin flipped. Then, two application cases are given for the designed chiral metasurface. A flat chiral meta-lens is constructed to produce wideband focusing in the transmission/reflection side while the disturbing from the opposite circular polarization is well blocked by high reflection/transmission. A chiral Fabry-Perot cavity is also constructed, which has an extremely high quality factor (2.1E4). The proposed method provides an efficient way to produce strong chiroptical effects and has a promising potential for various applications such as signal processing, sensing, radiation and detection.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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