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Dynamically Tunable Terahertz Multiple Plasmon‐Induced Transparency and Slow Light in Planar Metamaterials With Rectangular Interrupted Graphene.

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Title: Dynamically Tunable Terahertz Multiple Plasmon‐Induced Transparency and Slow Light in Planar Metamaterials With Rectangular Interrupted Graphene.
Authors: Wang, Boyun1,2 (AUTHOR) wangboyun@alumni.hust.edu.cn, Wang, Xialan1 (AUTHOR), Yan, Xiang1 (AUTHOR), Yu, Chunchao3 (AUTHOR), Wang, Tao2 (AUTHOR)
Source: International Journal of Quantum Chemistry. 12/15/2024, Vol. 124 Issue 24, p1-14. 14p.
Subjects: Fermi level, Graphene, Metamaterials, Computer simulation, Terahertz materials, Monomolecular films
Abstract: A novel planar monolayer graphene metamaterial structure containing rectangular interrupted graphene is proposed. Dynamically tunable multiple plasmon‐induced transparency (PIT) and slow light are obtained within the terahertz band through destructive interference between continuous dark and interrupted bright modes. Two distinct graphene types function as the optical dark and bright modes, and continuous graphene array is the nonradiative dark mode, whereas interrupted graphene array is the broad linewidth bright mode, respectively. Given the existence of graphene structure in the continuous state, continuous graphene Fermi level is dynamic tuned through the simple use of the bias voltage. Expressions of n‐order coupled mode theory (CMT) are correctly deduced, with CMT fitting theoretical analysis being identical to finite‐difference time‐domain numerical simulation based on dual‐ and triple‐PIT results for n = 3 and n = 4 cases, respectively. The continuous graphene Fermi level increases within 0.7–1.1 eV; the group index of the dual‐PIT system is maintained within 475.1–801.6, while that of the triple‐PIT system is 583.3–886.3. Additionally, the maximal group index is as high as 886.3 at 1.1 eV, indicating that an outstanding slow light device is established. Consequently, these proposed structures and research outcomes can guide the design of multichannel optical filters, excellent slow light devices, and dynamically tunable optical modulators. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Quantum Chemistry is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
  Group: Ti
  Data: Dynamically Tunable Terahertz Multiple Plasmon‐Induced Transparency and Slow Light in Planar Metamaterials With Rectangular Interrupted Graphene.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Boyun%22">Wang, Boyun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> wangboyun@alumni.hust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Xialan%22">Wang, Xialan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Xiang%22">Yan, Xiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yu%2C+Chunchao%22">Yu, Chunchao</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Tao%22">Wang, Tao</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Quantum+Chemistry%22">International Journal of Quantum Chemistry</searchLink>. 12/15/2024, Vol. 124 Issue 24, p1-14. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Fermi+level%22">Fermi level</searchLink><br /><searchLink fieldCode="DE" term="%22Graphene%22">Graphene</searchLink><br /><searchLink fieldCode="DE" term="%22Metamaterials%22">Metamaterials</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Terahertz+materials%22">Terahertz materials</searchLink><br /><searchLink fieldCode="DE" term="%22Monomolecular+films%22">Monomolecular films</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A novel planar monolayer graphene metamaterial structure containing rectangular interrupted graphene is proposed. Dynamically tunable multiple plasmon‐induced transparency (PIT) and slow light are obtained within the terahertz band through destructive interference between continuous dark and interrupted bright modes. Two distinct graphene types function as the optical dark and bright modes, and continuous graphene array is the nonradiative dark mode, whereas interrupted graphene array is the broad linewidth bright mode, respectively. Given the existence of graphene structure in the continuous state, continuous graphene Fermi level is dynamic tuned through the simple use of the bias voltage. Expressions of n‐order coupled mode theory (CMT) are correctly deduced, with CMT fitting theoretical analysis being identical to finite‐difference time‐domain numerical simulation based on dual‐ and triple‐PIT results for n = 3 and n = 4 cases, respectively. The continuous graphene Fermi level increases within 0.7–1.1 eV; the group index of the dual‐PIT system is maintained within 475.1–801.6, while that of the triple‐PIT system is 583.3–886.3. Additionally, the maximal group index is as high as 886.3 at 1.1 eV, indicating that an outstanding slow light device is established. Consequently, these proposed structures and research outcomes can guide the design of multichannel optical filters, excellent slow light devices, and dynamically tunable optical modulators. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Quantum Chemistry is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/qua.27526
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      – Code: eng
        Text: English
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        PageCount: 14
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      – SubjectFull: Fermi level
        Type: general
      – SubjectFull: Graphene
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      – SubjectFull: Metamaterials
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      – SubjectFull: Computer simulation
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      – SubjectFull: Terahertz materials
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      – SubjectFull: Monomolecular films
        Type: general
    Titles:
      – TitleFull: Dynamically Tunable Terahertz Multiple Plasmon‐Induced Transparency and Slow Light in Planar Metamaterials With Rectangular Interrupted Graphene.
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            NameFull: Wang, Boyun
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            NameFull: Wang, Xialan
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            NameFull: Yan, Xiang
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            – D: 15
              M: 12
              Text: 12/15/2024
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              Y: 2024
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