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논문 기본 정보

자료유형
학술저널
저자정보
Feng Li (Shanghai Technical Institute of Electronics & Information) Yulong Tang (Shanghai Jiao Tong University) Qingsong Peng (Shanghai Technical Institute of Electronics & Information) Guosheng Hu (Shanghai Technical Institute of Electronics & Information)
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.7 No.2
발행연도
2023.4
수록면
136 - 146 (11page)

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초록· 키워드

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Based on calculations using the macroscopic Maxwell’s equations with mesoscopic boundary conditions, light absorption by a layered metal-insulator-metal (MIM) metamaterial system embedded in three different environments is investigated. Increasing the top metal thickness shifts the broad absorption band to lower dielectric-constant regions and longer wavelengths, for either TM or TE waves. Boosting the dielectric-layer thickness redshifts the broadband absorption to regions of larger dielectric constant. In air, for the dielectric-constant range of 0.86–3.40, the absorption of the system exceeds 98% across 680–1,033 nm. In seawater with optimized dielectric constant, ≥94% light absorption over 400–1,200 nm can be achieved; particularly in the wavelength range of 480–960 nm and dielectric-constant range of 0.82–3.50, the absorption is greater than 98%. In an environment with even higher refractive index (1.74), ≥98% light absorption over 400–1,200 nm can be achieved, giving better performance. The influence of angle of incidence on light absorption of the MIM system is also analyzed, and the angle tolerance for ≥90% broadband absorption of a TM wave is up to 40° in an environment with large refractive index. While the incident-angle dependence of the absorption of a TE wave is nearly the same for different circumstances, the situation is different for a TM wave.

목차

I. INTRODUCTION
II. MIM CONFIGURATION AND MODEL
III. RESULTS AND DISCUSSIONS
IV. CONCLUSIONS
REFERENCES

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