Small-sized long wavelength infrared absorber with perfect ultra-broadband absorptivity

doi:10.1364/oe.382776

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Small-sized long wavelength infrared absorber with perfect ultra-broadband absorptivity
	Y. Zhou,Z. Z. Liang,Z. Qin,E. Z. Hou,X. Y. Shi,Y. H. Zhang,Y. Xiong,Y. H. Tang,Y. D. Fan,F. M. Yang,J. Q. Liang,C. H. Chen and J. J. Lai
刊名	Optics Express
	2020
卷号	28 期号:2 页码:1279-1290
ISSN号	1094-4087
DOI	10.1364/oe.382776
英文摘要	Two types of ultra-broadband long wavelength infrared (LWIR) absorbers with small period and super thin thickness are designed. The absorption with high absorptivity and large bandwidth is achieved through combined propagating and localized surfaced plasmon resonances. We first design a three-layer absorber with a Ti-Ge-Ti configuration, the period of the structure is only 1.4 mu m (nearly 1/8 of the center wavelength), the thickness of its dielectric is only 0.5 mu m (1/22 of the center wavelength), and the average absorption is 87.9% under normal incident from 8 mu m to 14 mu m. Furthermore, the four-layer absorber with a Ti-Ge-Si3N4-Ti configuration is designed to obtain more average absorption increasing to 94.5% from 8 mu m to 14 mu m under normal incident, the period of the structure increases to 1.6 mu m and the total thickness of dielectric increases to 0.6 mu m. The proposed absorber is polarization-independent and possesses a good tolerance of incident angle. We calculate that the average absorption of the four-layer absorber for both TE- and TM-modes still exceeds 90% up to an incident angle of theta = 40 degrees (90.7% for TE-mode, 91.9% for TM-mode), and exceed 80% up to an incident angle of theta = 60 degrees (80.2% for TE-mode, 82.1% for TM-mode). (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64893]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Zhou,Z. Z. Liang,Z. Qin,E. Z. Hou,X. Y. Shi,Y. H. Zhang,Y. Xiong,Y. H. Tang,Y. D. Fan,F. M. Yang,J. Q. Liang,C. H. Chen and J. J. Lai. Small-sized long wavelength infrared absorber with perfect ultra-broadband absorptivity[J]. Optics Express,2020,28(2):1279-1290.
APA	Y. Zhou,Z. Z. Liang,Z. Qin,E. Z. Hou,X. Y. Shi,Y. H. Zhang,Y. Xiong,Y. H. Tang,Y. D. Fan,F. M. Yang,J. Q. Liang,C. H. Chen and J. J. Lai.(2020).Small-sized long wavelength infrared absorber with perfect ultra-broadband absorptivity.Optics Express,28(2),1279-1290.
MLA	Y. Zhou,Z. Z. Liang,Z. Qin,E. Z. Hou,X. Y. Shi,Y. H. Zhang,Y. Xiong,Y. H. Tang,Y. D. Fan,F. M. Yang,J. Q. Liang,C. H. Chen and J. J. Lai."Small-sized long wavelength infrared absorber with perfect ultra-broadband absorptivity".Optics Express 28.2(2020):1279-1290.