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Ultrathin broadband nearly perfect absorber with symmetrical coherent illumination
Pu, Mingbo; Feng, Qin; Wang, Min; Hu, Chenggang; Huang, Cheng; Ma, Xiaoliang; Zhao, Zeyu; Wang, Changtao; Luo, Xiangang; Pu, M.
Source PublicationOptics Express
Volume20Issue:3Pages:2246-2254
2012
Language英语
DOI10.1364/OE.20.002246
Indexed ByEi
WOS IDWOS:000300499500033
Subtype期刊论文
AbstractAs highlighted by recent articles [Phys. Rev. Lett. 105, 053901(2010) and Science 331, 889-892(2011)], the coherent control of narrowband perfect absorption in intrinsic silicon slab has attracted much attention. In this paper, we demonstrate that broadband coherent perfect absorber (CPA) can be achieved by heavily doping an ultrathin silicon film. Two distinct perfect absorption regimes are derived with extremely broad and moderately narrow bandwidth under symmetrical coherent illumination. The large enhancement of bandwidth may open up new avenues for broadband applications. Subsequently, interferometric method is used to control the absorption coherently with extremely large contrast between the maximum and minimum absorptance. Compared with the results in literatures, the thin film CPAs proposed here show much more flexibility in both operation frequency and bandwidth. © 2012 Optical Society of America.; As highlighted by recent articles [Phys. Rev. Lett. 105, 053901(2010) and Science 331, 889-892(2011)], the coherent control of narrowband perfect absorption in intrinsic silicon slab has attracted much attention. In this paper, we demonstrate that broadband coherent perfect absorber (CPA) can be achieved by heavily doping an ultrathin silicon film. Two distinct perfect absorption regimes are derived with extremely broad and moderately narrow bandwidth under symmetrical coherent illumination. The large enhancement of bandwidth may open up new avenues for broadband applications. Subsequently, interferometric method is used to control the absorption coherently with extremely large contrast between the maximum and minimum absorptance. Compared with the results in literatures, the thin film CPAs proposed here show much more flexibility in both operation frequency and bandwidth. © 2012 Optical Society of America.
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Cited Times:159[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6801
Collection微细加工光学技术国家重点实验室(开放室)
Corresponding AuthorPu, M.
Affiliation State Key Laboratory of Optical Technologies for Microfabrication, Institute of Optics and Electronics, Chinese Academy of Science, P.O.box 350, Chengdu 610209, China
Recommended Citation
GB/T 7714
Pu, Mingbo,Feng, Qin,Wang, Min,et al. Ultrathin broadband nearly perfect absorber with symmetrical coherent illumination[J]. Optics Express,2012,20(3):2246-2254.
APA Pu, Mingbo.,Feng, Qin.,Wang, Min.,Hu, Chenggang.,Huang, Cheng.,...&Pu, M..(2012).Ultrathin broadband nearly perfect absorber with symmetrical coherent illumination.Optics Express,20(3),2246-2254.
MLA Pu, Mingbo,et al."Ultrathin broadband nearly perfect absorber with symmetrical coherent illumination".Optics Express 20.3(2012):2246-2254.
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