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Transmission of Infrared Radiation Through Metallic Photonic Crystal Structures
RISE., Swedish ICT, Acreo.
RISE., Swedish ICT, Acreo.
2013 (Engelska)Ingår i: IEEE Photonics Journal, ISSN 1097-5764, E-ISSN 1943-0655, Vol. 5, nr 5, s. 4500608-4500608Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Monolithic integration of a metallic photonic crystal (mPhC) structure onto semiconductor infrared (IR) photodetectors can enhance the detector performances. In order to experimentally investigate the parameters involved in optimizing the transmission spectra of the mPhC structures matching the detector operating wavelength in mid- and long-wave IR (MWIR and LWIR) regimes, square thin gold (Au) hole arrays having periodicities of 4.0, 3.6, 2.4, and 1.8 ÎŒm with various fill factors were fabricated on Si or GaAs substrates in a wafer scale. The thicknesses of the Au films are 50, 100, and 200 nm, respectively. Through this systemic study, suitable mPhC structures were revealed that can be readily integrated onto our type-II InGaSb-based quantum dot MWIR and LWIR photodetectors.

Ort, förlag, år, upplaga, sidor
2013. Vol. 5, nr 5, s. 4500608-4500608
Nyckelord [en]
III-V semiconductors;crystal structure;gallium compounds;gold;indium compounds;infrared detectors;infrared spectra;integrated optoelectronics;metallic thin films;optical arrays;optical fabrication;photodetectors;photonic crystals;Au;Au-InGaSb;GaAs;GaAs substrate;LWIR photodetector;MWIR photodetector;Si;Si substrate;detector performances;fill factors;film thickness;infrared radiation;long-wave IR range;mPhC structure;metallic photonic crystal structures;midwave IR range;monolithic integration;optimization;semiconductor infrared photodetectors;size 100 nm;size 200 nm;size 50 nm;square thin gold hole arrays;transmission spectra;type-II InGaSb-based quantum dot;wafer scale;Detectors;Dielectric constant;Gallium arsenide;Gold;Periodic structures;Silicon;Substrates;Infrared photodetectors;metallic photonic crystal;plasmonics;subwavelength structures
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URN: urn:nbn:se:ri:diva-27898DOI: 10.1109/JPHOT.2013.2278527OAI: oai:DiVA.org:ri-27898DiVA, id: diva2:1066617
Tillgänglig från: 2017-01-18 Skapad: 2017-01-18 Senast uppdaterad: 2017-11-29Bibliografiskt granskad

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