Broadband non-polarizing terahertz beam splitters with variable split ratio

Handle URI:
http://hdl.handle.net/10754/625360
Title:
Broadband non-polarizing terahertz beam splitters with variable split ratio
Authors:
Wei, Minggui; Xu, Quan; Wang, Qiu; Zhang, Xueqian; Li, Yanfeng ( 0000-0002-7966-8219 ) ; Gu, Jianqiang ( 0000-0001-8130-4329 ) ; Tian, Zhen; Zhang, Xixiang ( 0000-0002-3478-6414 ) ; Han, Jiaguang ( 0000-0001-9425-9635 ) ; Zhang, Weili
Abstract:
Seeking effective terahertz functional devices has always aroused extensive attention. Of particular interest is the terahertz beam splitter. Here, we have proposed, designed, manufactured, and tested a broadband non-polarizing terahertz beam splitter with a variable split ratio based on an all-dielectric metasurface. The metasurface was created by patterning a dielectric surface of the N-step phase gradient and etching to a few hundred micrometers. The conversion efficiency as high as 81% under the normal incidence at 0.7 THz was achieved. Meanwhile, such a splitter works well over a broad frequency range. The split ratio of the proposed design can be continuously tuned by simply shifting the metasurface, and the angle of emergences can also be easily adjusted by choosing the step of phase gradients. The proposed design is non-polarizing, and its performance is kept under different polarizations.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Wei M, Xu Q, Wang Q, Zhang X, Li Y, et al. (2017) Broadband non-polarizing terahertz beam splitters with variable split ratio. Applied Physics Letters 111: 071101. Available: http://dx.doi.org/10.1063/1.4986538.
Publisher:
AIP Publishing
Journal:
Applied Physics Letters
Issue Date:
15-Aug-2017
DOI:
10.1063/1.4986538
Type:
Article
ISSN:
0003-6951; 1077-3118
Sponsors:
This work was supported by the National Key Basic Research Program of China (Grant No. 2014CB339800), the National Science Foundation of China (Grant Nos. 61422509, 61420106006, and 61427814), and the U.S. National Science Foundation (Grant No. ECCS-1232081).
Additional Links:
http://aip.scitation.org/doi/10.1063/1.4986538
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorWei, Mingguien
dc.contributor.authorXu, Quanen
dc.contributor.authorWang, Qiuen
dc.contributor.authorZhang, Xueqianen
dc.contributor.authorLi, Yanfengen
dc.contributor.authorGu, Jianqiangen
dc.contributor.authorTian, Zhenen
dc.contributor.authorZhang, Xixiangen
dc.contributor.authorHan, Jiaguangen
dc.contributor.authorZhang, Weilien
dc.date.accessioned2017-08-21T06:28:04Z-
dc.date.available2017-08-21T06:28:04Z-
dc.date.issued2017-08-15en
dc.identifier.citationWei M, Xu Q, Wang Q, Zhang X, Li Y, et al. (2017) Broadband non-polarizing terahertz beam splitters with variable split ratio. Applied Physics Letters 111: 071101. Available: http://dx.doi.org/10.1063/1.4986538.en
dc.identifier.issn0003-6951en
dc.identifier.issn1077-3118en
dc.identifier.doi10.1063/1.4986538en
dc.identifier.urihttp://hdl.handle.net/10754/625360-
dc.description.abstractSeeking effective terahertz functional devices has always aroused extensive attention. Of particular interest is the terahertz beam splitter. Here, we have proposed, designed, manufactured, and tested a broadband non-polarizing terahertz beam splitter with a variable split ratio based on an all-dielectric metasurface. The metasurface was created by patterning a dielectric surface of the N-step phase gradient and etching to a few hundred micrometers. The conversion efficiency as high as 81% under the normal incidence at 0.7 THz was achieved. Meanwhile, such a splitter works well over a broad frequency range. The split ratio of the proposed design can be continuously tuned by simply shifting the metasurface, and the angle of emergences can also be easily adjusted by choosing the step of phase gradients. The proposed design is non-polarizing, and its performance is kept under different polarizations.en
dc.description.sponsorshipThis work was supported by the National Key Basic Research Program of China (Grant No. 2014CB339800), the National Science Foundation of China (Grant Nos. 61422509, 61420106006, and 61427814), and the U.S. National Science Foundation (Grant No. ECCS-1232081).en
dc.publisherAIP Publishingen
dc.relation.urlhttp://aip.scitation.org/doi/10.1063/1.4986538en
dc.rightsThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Applied Physics Letters and may be found at http://doi.org/10.1063/1.4986538.en
dc.titleBroadband non-polarizing terahertz beam splitters with variable split ratioen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalApplied Physics Lettersen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionCenter for Terahertz waves and College of Precision Instrument and Optoelectronics Engineering, Key Laboratory of Optoelectronics Information and Technical Science, Ministry of Education, Tianjin University, Tianjin 300072, People's Republic of Chinaen
dc.contributor.institutionSchool of Electrical and Computer Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, USAen
kaust.authorZhang, Xixiangen
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