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

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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.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Optically tunable split-ring resonators controlled lead sulfide quantum dots modulator for wide THz radiation ; volume:11 ; number:8 ; year:2022 ; pages:1619-1628 ; extent:10
Nanophotonics ; 11, Heft 8 (2022), 1619-1628 (gesamt 10)

Urheber
Xu, Yifei
Song, Qi
Li, Enen
Zhang, Min
Sun, Zhenhua
Wang, Tianwu
Liu, Fang
Yan, Peiguang

DOI
10.1515/nanoph-2021-0808
URN
urn:nbn:de:101:1-2022120813262846359169
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:38 MESZ

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Beteiligte

  • Xu, Yifei
  • Song, Qi
  • Li, Enen
  • Zhang, Min
  • Sun, Zhenhua
  • Wang, Tianwu
  • Liu, Fang
  • Yan, Peiguang

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