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

Citation
H. Sai et al., Spectral control of thermal emission by periodic microstructured surfaces in the near-infrared region, J OPT SOC A, 18(7), 2001, pp. 1471-1476
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
ISSN journal
1084-7529 → ACNP
Volume
18
Issue
7
Year of publication
2001
Pages
1471 - 1476
Database
ISI
SICI code
1084-7529(200107)18:7<1471:SCOTEB>2.0.ZU;2-B
Abstract
Thermal emissive properties of microstructured surfaces are measured in the near-infrared region. Two-dimensional periodic microstructured surfaces wi th metal coatings are fabricated with Si anisotropic etching and laser abla tion techniques. The structural periods of the samples are 2.0 and 1.5 mum. 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 compute d with rigorous coupled-wave analysis (RCWA) is performed on the microstruc tured samples. The selective-emission peaks measured through experiments ca n be reproduced well by RCWA, and this result suggests strongly that the th ermal 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. (C) 2001 Optical Society of America.