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Second-order surface-plasmon assisted responsivity enhancement in germanium nano-photodetectors with bull's eye antennas

Ren, Fang-Fang; Xu, Wei-Zong; Ye, Jiandong; Ang, Kah-Wee; Lu, Hai; Zhang, Rong; Yu, Mingbin; Lo, Guo-Qiang; Tan, Hark Hoe; Jagadish, Chennupati

Description

The enhancement of photo-response in nanometer-scale germanium photodetectors through bull's eye antennas capable of supporting 2nd-order Bloch surface plasmon modes is demonstrated in theory and experiment. A detailed numerical investigation reveals that the presence of surface wave and its constructive interference with the directly incident light are incorporated into the main mechanisms for enhancing transmission through the central nanoaperture. With a grating period of 1500 nm, the...[Show more]

dc.contributor.authorRen, Fang-Fang
dc.contributor.authorXu, Wei-Zong
dc.contributor.authorYe, Jiandong
dc.contributor.authorAng, Kah-Wee
dc.contributor.authorLu, Hai
dc.contributor.authorZhang, Rong
dc.contributor.authorYu, Mingbin
dc.contributor.authorLo, Guo-Qiang
dc.contributor.authorTan, Hark Hoe
dc.contributor.authorJagadish, Chennupati
dc.date.accessioned2016-06-06T01:35:43Z
dc.date.available2016-06-06T01:35:43Z
dc.identifier.issn1094-4087
dc.identifier.urihttp://hdl.handle.net/1885/102004
dc.description.abstractThe enhancement of photo-response in nanometer-scale germanium photodetectors through bull's eye antennas capable of supporting 2nd-order Bloch surface plasmon modes is demonstrated in theory and experiment. A detailed numerical investigation reveals that the presence of surface wave and its constructive interference with the directly incident light are incorporated into the main mechanisms for enhancing transmission through the central nanoaperture. With a grating period of 1500 nm, the area-normalized responsivity can be enhanced up to 3.8 times at 2 V bias for a 780 nm laser. It provides an easier fabrication path for ultra-short wavelength operations especially in devices using optically denser materials.
dc.description.sponsorshipThis work was supported by the Australian Research Council Discovery Early Career Researcher Award (DE130101700), the National Natural Science Foundation of China (Nos. 11104130, 61274058, 61322403, 60825401, and 60936004), the Basic Research Program of Jiangsu Province (Nos. BK2011556, BK2011437, and BK20130013), and the State Key Program for Basic Research of China (Nos. 2010CB327504 and 2011CB301900).
dc.publisherOptical Society of America
dc.rights© 2014 Optical Society of America
dc.sourceOptics express
dc.titleSecond-order surface-plasmon assisted responsivity enhancement in germanium nano-photodetectors with bull's eye antennas
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume22
dc.date.issued2014-06-30
local.identifier.absfor020504
local.identifier.absfor090605
local.identifier.ariespublicationU3488905xPUB3902
local.publisher.urlhttp://www.osa.org/en-us/home/
local.type.statusPublished Version
local.contributor.affiliationRen, Fang-Fang, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University
local.contributor.affiliationXu, Wei-Zong, Nanjing University, China
local.contributor.affiliationYe, Jiandong, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University
local.contributor.affiliationAng, Kah-Wee, Institute of Microelectronics, A STAR, Singapore
local.contributor.affiliationLu, Hai, Nanjing University, China
local.contributor.affiliationZhang, R., Nanjing University, China
local.contributor.affiliationYu, M.B., Institute of Microelectronics, Singapore
local.contributor.affiliationLo, G.Q., Institute of Microelectronics, A STAR, Singapore
local.contributor.affiliationTan, Hoe Hark, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University
local.contributor.affiliationJagadish, Chennupati, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University
dc.relationhttp://purl.org/au-research/grants/arc/DE130101700
local.identifier.essn1094-4087
local.bibliographicCitation.issue13
local.bibliographicCitation.startpage15949
local.bibliographicCitation.lastpage15956
local.identifier.absseo970102
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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