Spectral control of thermal emission by periodic microstructured surfaces in the near-infrared region

Hitoshi Sai, Hiroo Yugami, Yasuhiro Akiyama, Yoshiaki Kanamori, Kazuhiro Hane

Research output: Contribution to journalArticlepeer-review

86 Citations (Scopus)

Abstract

Thermal emissive properties of microstructured surfaces are measured in the near-infrared region. Two-dimensional periodic microstructured surfaces with metal coatings are fabricated with Si anisotropic etching and laser ablation techniques. The structural periods of the samples are 2.0 and 1.5 μm. Clear selective-emission bands are observed experimentally. This selective emission is attributed to the resonance effect between the emissive field and the surface microstructures. In addition, numerical calculation computed with rigorous coupled-wave analysis (RCWA) is performed on the microstructured samples. The selective-emission peaks measured through experiments can be reproduced well by RCWA, and this result suggests strongly that the thermal radiation from periodic structures may have spatial coherence. It is confirmed that the surface microstructure can be applied to the control of spectral emission from high-temperature materials.

Original languageEnglish
Pages (from-to)1471-1476
Number of pages6
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume18
Issue number7
DOIs
Publication statusPublished - 2001 Jan 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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