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

Sai, H Yugami, H Akiyama, Y Kanamori, Y Hane, K

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

22

INGLESE

Article

Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION

1084-7529 → ACNP

18

7

2001

1471 - 1476

ISI

1084-7529(200107)18:7<1471:SCOTEB>2.0.ZU;2-B

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.