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Design Principles for Infrared Wide-angle Perfect Absorber Based on Plasmonic Structure
Author(s): Pu, MB (Pu, Mingbo); Hu, CG (Hu, Chenggang); Wang, M (Wang, Min); Huang, C (Huang, Cheng); Zhao, ZY (Zhao, Zeyu); Wang, CT (Wang, Changtao); Feng, Q (Feng, Qin); Luo, XG (Luo, Xiangang)
Source: OPTICS EXPRESS Volume: 19 Issue: 18 Pages: 17413-17420 Published: AUG 29 2011
Abstract: An approach for designing a wide-angle perfect absorber at infrared frequencies is proposed. The technique is based on a perfectly impedance-matched sheet (PIMS) formed by plasmonic nanostructure. It is shown that the effective impedance is more physical meaningful and beneficial than effective medium in describing the electromagnetic properties of metamaterial absorber. As a specific implementation of this technique, a wide-angle polarization-independent dual-band absorber is numerically demonstrated at frequencies of 100THz and 280THz with absorption close to 100% simultaneously. Circuit models are utilized to describe the impedance property of localized plasmon modes and the results show good agreement with that retrieved from reflection coefficient at normal incidence. (C)2011 Optical Society of America
Addresses: [Pu, MB; Hu, CG; Wang, M; Huang, C; Zhao, ZY; Wang, CT; Feng, Q; Luo, XG] Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, Chengdu 610209, Peoples R China
Reprint Address: Pu, MB (reprint author), Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, POB 350, Chengdu 610209, Peoples R China
E-mail Address: lxg@ioe.ac.cn
IDS Number: 814XE
Source: OPTICS EXPRESS Volume: 19 Issue: 18 Pages: 17413-17420 Published: AUG 29 2011
Abstract: An approach for designing a wide-angle perfect absorber at infrared frequencies is proposed. The technique is based on a perfectly impedance-matched sheet (PIMS) formed by plasmonic nanostructure. It is shown that the effective impedance is more physical meaningful and beneficial than effective medium in describing the electromagnetic properties of metamaterial absorber. As a specific implementation of this technique, a wide-angle polarization-independent dual-band absorber is numerically demonstrated at frequencies of 100THz and 280THz with absorption close to 100% simultaneously. Circuit models are utilized to describe the impedance property of localized plasmon modes and the results show good agreement with that retrieved from reflection coefficient at normal incidence. (C)2011 Optical Society of America
Addresses: [Pu, MB; Hu, CG; Wang, M; Huang, C; Zhao, ZY; Wang, CT; Feng, Q; Luo, XG] Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, Chengdu 610209, Peoples R China
Reprint Address: Pu, MB (reprint author), Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, POB 350, Chengdu 610209, Peoples R China
E-mail Address: lxg@ioe.ac.cn
IDS Number: 814XE
