Optimization of bull’s eye structures for transmission enhancement

Mahboub, O.; Carretero‐Palacios, Sol; Genet, Cyriaque; García‐Vidal, F. J.; Rodrigo, Sergio G.; Martín‐Moreno, Luis; Ebbesen, Thomas W.

doi:10.1364/oe.18.011292

Cited by 90 publications

(58 citation statements)

References 41 publications

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“…Numerical and experimental studies have demonstrated that the efficiency of coupling light incident on a BE lens into SPP is primarily dictated by the grating period, p [21]. Other interconnected structural parameters, such as the ring width, w, ring depth, s, and the distance to the first ring, a, also play a role and their values can be optimized to yield maximum transmission ( Fig.…”

Section: Input Couplingmentioning

confidence: 99%

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Enhanced Terahertz Transmission Through Bullseye Plasmonics Lenses Fabricated Using Micromilling Techniques

et al. 2016

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Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Enhanced terahertz transmission through bullseye plasmonics lenses fabricated using micromilling techniques Heggie, Tanner J.; Naylor, David A.; Gom, Brad G.; Bordatchev, Evgueni; Trimboli, M. Grace http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=fr L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D'UTILISER CE SITE WEB. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21277263&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21277263&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1007/s11468-015-0152-7 Abstract Imaging applications at terahertz frequencies are, in general, limited to relatively low spatial resolution due to the effects of diffraction. By using a subwavelength aperture in the near-field, however, it is possible to achieve subwavelength resolution, although low transmission through the aperture limits the sensitivity of this approach. Plasmonic lenses in the form of bullseye structures, which consist of a circular subwavelength aperture surrounded by concentric periodic corrugations, have demonstrated enhanced transmission, thereby increasing the utility of near-field imaging configurations. In this paper, the design, fabrication, and experimental performance of plasmonic lenses optimized for 300 GHz are discussed. While nanofabrication techniques are required for optical applications, microfabrication techniques are sufficient for terahertz applications. The process flow for fabricating a double-sided bullseye structure using a precision micromilling technique is described. Transmission and beam profile measurements using a customized t...

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Section: Input Couplingmentioning

confidence: 99%

“…1). At visible wavelengths, rules of thumb have been developed to aid in the design of a BE lens with a transmission resonance at λ R : p = 1.1λ R , w/p = 0.5, s/p = 0.2, and a = p/2 [21]. These relationships were used as a starting point for modeling the performance of THz BE lenses at λ R = 922 µm (325 GHz).…”

Section: Input Couplingmentioning

confidence: 99%

Enhanced Terahertz Transmission Through Bullseye Plasmonics Lenses Fabricated Using Micromilling Techniques

et al. 2016

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“…Part I is a Bull's eye pattern which is etched from a free standing 300 nm thick silver layer: one central hole, and goes completely through the silver layer with a diameter of 300 nm; five 60 nm deep grooves surrounding the hole are etched at the output side of the layer with groove period (p) 530 nm and each groove's width 220 nm. This structure has been widely investigated theoretically and experimentally [17,18].…”

Section: Nanostructure's Design and Simulation Toolsmentioning

confidence: 99%

Realization of enhanced light directional beaming via a Bull's eye structure composited with circular disk and conical tip

Zhang

Liu

2015

Optics Communications

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“…This ensures a two-dimensional field confinement. It has been theoretically and experimentally verified that circular plasmonic gratings can lower the divergence of transmitted light from subwavelength apertures [22,23] and effectively overcome the diffraction limit [24,25]. These features suggested further exploitations of circular gratings and the application regime has been largely broadened in the more recent past.…”

Section: Introductionmentioning

confidence: 99%

Enhancing resonances of optical nanoantennas by circular gratings

Qi¹,

Kaiser²,

Klein³

et al. 2015

Opt. Express

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Optical plasmonic antennas allow for localizing and enhancing light at the nanoscale. To enhance the application opportunities of optical antennas, their quality factor needs to be substantially improved. Here, we numerically and experimentally demonstrate that the resonance of a dipolar metallic disc antenna can be enhanced by a circular grating that obeys the Bragg condition. The supporting grating effectively collects energy from an extended spatial domain and guides it spectrally-selected into the central antenna, leading to a significantly enhanced field intensity at resonance. Accordingly, the quality factor of the antenna is enhanced by at least five times. The approach can be applied to other plasmonic systems, hence constituting an important ingredient to a future plasmonic tool box. References and links1. L. Novotny and N. van Hulst, "Antennas for light," Nature Photon. 5, 83-90 (2011). 2. P. Bharadwaj, B. Deutsch, and L. Novotny, "Optical antennas," Adv. Opt. Photon. 1(3), 438-483 (2009)

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Optimization of bull’s eye structures for transmission enhancement

Cited by 90 publications

References 41 publications

Enhanced Terahertz Transmission Through Bullseye Plasmonics Lenses Fabricated Using Micromilling Techniques

Enhanced Terahertz Transmission Through Bullseye Plasmonics Lenses Fabricated Using Micromilling Techniques

Realization of enhanced light directional beaming via a Bull's eye structure composited with circular disk and conical tip

Enhancing resonances of optical nanoantennas by circular gratings

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