Optically tunable split-ring resonators controlled lead sulfide quantum dots modulator for wide THz radiation-Reference-Cited by-同舟云学术

Optically tunable split-ring resonators controlled lead sulfide quantum dots modulator for wide THz radiation

Published:2022-03-02 Issue:8 Volume:11 Page:1619-1628
ISSN:2192-8614
Container-title:Nanophotonics
language:en
Short-container-title:

Author:

Xu Yifei¹,Song Qi¹^ORCID,Li Enen²,Zhang Min¹,Sun Zhenhua¹,Wang Tianwu³,Liu Fang⁴,Yan Peiguang¹

Affiliation:

1. College of Physics and Optoelectronic Engineering , Shenzhen University , Shenzhen 518060 , China

2. Aerospace Information Research Institute , Chinese Academy of Sciences , Beijing 100094 , China

3. GBA branch of Aerospace Information Research Institute , Chinese Academy of Sciences , Guangzhou 510700 , China

4. Beijing Key Laboratory of Passive Safety Technology for Nuclear Energy, School of Nuclear Science and Engineering , North China Electric Power University , Beijing 102206 , China

Abstract

Abstract It is particularly appealing for efficient active terahertz (THz) modulators using photonic structures to enhance light–matter interaction. Here, an optical controlled THz modulator is proposed that combines lead sulfide (PbS) quantum dots with subwavelength metallic split-ring resonators (SRRs) for providing field enhancement. The modulation depth reaches 60.3%, which is approximately 3 times larger than the PbS quantum dots film without SRRs (as reference) in the frequency range of 0.1–1.1 THz. Such significant enhanced THz modulation is mainly due to the local THz field enhancement caused by the SRRs, which is consistent with the simulation result.

Funder

State Key Laboratory of Advanced Optical Communication Systems and Networks, China

National Natural Science Foundation of China

Science, Technology and Innovation Commission of Shenzhen Municipality

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biotechnology

Link

https://www.degruyter.com/document/doi/10.1515/nanoph-2021-0808/pdf

Reference51 articles.

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