Transmission of Infrared Radiation Through Metallic Photonic Crystal Structures

Author

Soltanmoradi, R. ; Qin Wang ; Min Qiu ; Andersson, J.Y.

Author_Institution

Sch. of Inf. & Commun. Technol., R. Inst. of Technol. (KTH), Kista, Sweden

Volume

5

Issue

5

fYear

2013

fDate

Oct. 2013

Firstpage

4500608

Lastpage

4500608

Abstract

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 μm 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.

Keywords

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;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2013.2278527

Filename

6579630