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题名:
Truncated spherical voids for nearly omnidirectional optical absorption
作者: Wang, Min; Hu, Chenggang; Pu, Mingbo; Huang, Cheng; Zhao, Zeyu; Feng, Qin; Luo, Xiangang
刊名: OPTICS EXPRESS
出版日期: 2011-10-10
卷号: 19, 期号:21, 页码:20642-20649
文章类型: Article
英文摘要: Truncated spherical voids nanostructured tungsten films are shown to have nearly perfect absorption with characteristics of broad-band, polarization-independent and wide-incidence angle in near infrared and visible regime. Through optimizing material and structural parameters, we can achieve the absorbance above 90% from 420THz to 600THz within incidence angle from 0 degrees to 60 degrees for TE polarization and from 450THz to 800THz within incidence angle from 0 degrees to 75 degrees for TM polarization. In particular, absorbance can achieve 99.9% at 550.5THz for both polarizations under normal incidence. Such strong absorption is explained using multilayer effective media theory and cavity resonance. (C)2011 Optical Society of America
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Optics
研究领域[WOS]: Optics
关键词[WOS]: ABSORBERS ; GRATINGS ; DESIGN
收录类别: SCI
语种: 英语
WOS记录号: WOS:000296065700087
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3439
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, Chengdu 610209, Peoples R China

Recommended Citation:
Wang, Min,Hu, Chenggang,Pu, Mingbo,et al. Truncated spherical voids for nearly omnidirectional optical absorption[J]. OPTICS EXPRESS,2011,19(21):20642-20649.
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