Multiwavelength Selective IR Emission Using Surface Plasmon Polaritons for Gas Sensing

Author

Masuno, Katsuya ; Sawada, Takahiro ; Kumagai, Shinya ; Sasaki, Minoru

Author_Institution

Dept. of Adv. Sci. & Technol., Toyota Technol. Inst., Nagoya, Japan

Volume

23

Issue

22

fYear

2011

Firstpage

1661

Lastpage

1663

Abstract

Multiwavelength selective infrared (IR) emission utilizing reflection type gratings is proposed. Surface plasmon polariton (SPP) is excited on the metallic grating by IR having the wavelength nearly equal to the grating pitch. The SPP carries IR energy from the thermal source to the outside. The grating element with two different pitches is combined with a single thermal source. Emission peaks at wavelengths corresponding to the pitches are confirmed. CO₂ gas is confirmed to absorb the output IR at the wavelength of an emission peak following the Lambert-Beer law.

Keywords

diffraction gratings; gas sensors; infrared spectra; polaritons; surface plasmons; IR energy; Lambert-Beer law; emission peaks; gas sensing; grating element; grating pitch; metallic grating; multiwavelength selective IR emission; multiwavelength selective infrared emission; reflection type gratings; surface plasmon polaritons; thermal source; Absorption; Detectors; Gold; Gratings; Layout; Mirrors; Optical sensors; Gas sensor; infrared (IR) emitter; multiwavelength; surface plasmon polaritons (SPPs);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2166150

Filename

5999702