Abstract
We investigate the THz absorption properties of Fibonacci photonic crystals with graphene by using characteristics matrix method based on conductivity. We demonstrate that the structure can lead to perfect THz absorption because of strong photon localization in the defect layer of Fibonacci photonic crystals with graphene. By adjusting the incident angle, chemical potential, relaxation rate or the period number of Fibonacci photonic crystals, the maximum THz absorptivity can be tailored, and the absorptivity may be tuned continuously from 0 to 100%. The position of the THz absorption peaks can be tuned by changing the center wavelength or the thicknesses of structure layers. Moreover, the position of the THz absorption peaks can be tuned by changing the center wavelength or the thicknesses of structure layers. The proposed structure is easy to implement and has potential application in optoelectronic devices.
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Data Availability Statement
This manuscript has no associated data or the data will not be deposited. [Authors’ comment: The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request].
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Acknowledgements
This work was supported by the Open Research Fund of State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology) No. 2022-KF-15, the Open Research Fund of State Key Laboratory of Millimeter Waves No. K201606, the NSFC Grant Nos. 11664025 and 11964018.
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PZ performed the calculation, under the supervision of HD, HD, HL, JD and JY analyzed the results and prepared the original draft of the manuscript. All authors approved the final version of the manuscript.
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Zhang, P., Deng, XH., Liu, H. et al. Tunable enhanced THz absorption in Fibonacci photonic crystals with graphene. Eur. Phys. J. D 76, 163 (2022). https://doi.org/10.1140/epjd/s10053-022-00488-2
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DOI: https://doi.org/10.1140/epjd/s10053-022-00488-2