Narrow Bandwidth Midinfrared Waveguide Thermal Emitters

Author

Wu, Yi-Ting ; Chang, Yi-Tsung ; Chen, Hung-Hsin ; Huang, Hao-Fu ; Tzuang, Dah-Ching ; Jiang, Yu-Wei ; Chang, Pei-En ; Lee, Si-Chen

Author_Institution

Grad. Inst. of Electron. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

22

Issue

15

fYear

2010

Firstpage

1159

Lastpage

1161

Abstract

This work describes innovative waveguide thermal emitters with top metal perforated with subwavelength holes arranged in a short period to eliminate Bragg scattered waveguide modes (WMs) and surface plasmon polariton (SPP) modes. A metal-dielectric-metal parallel-plate waveguide with top metal perforated with subwavelength holes arranged in a short period exhibits high output intensities and emission peaks (WMs) with a narrow bandwidth in the midinfrared region under heat treatment. The redundant SPP modes and Bragg scattered WMs are filtered automatically by shifting them to the short wavelength due to a short period where blackbody radiations are too weak to appear.

Keywords

Bragg gratings; light scattering; optical waveguides; Bragg scattered waveguide modes; blackbody radiations; emission peaks; heat treatment; high output intensities; midinfrared region; midinfrared waveguide thermal emitters; narrow bandwidth; redundant SPP modes; subwavelength holes; surface plasmon polariton modes; Bragg scattering; Fabry–Pérot resonator; surface plasmon; waveguide filters;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

Conference_Location

6/7/2010 12:00:00 AM

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2010.2051221

Filename

5482091