Spectral control of thermal radiation by metallic surface relief gratings

Hitoshi Sai, Yoshiaki Kanamori, Kengo Watanabe, Hiroo Yugami

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The microcavity effect of two-dimensional W surface-relief gratings has been investigated by means of the finite-difference time-domain simulation. The peak structure of the spectral emissivity of W gratings with a number of microcavities is in good agreement with the spectral features of a single microcavity. This result shows that the emissivity enhancement by W gratings with microcavities is mainly attributable to the microcavity effect that arises from each microcavity. It is that the spectral emissivity can be controlled by a combination of several microcavities with different parameters, and that not only a rectangular but a cylindrical microcavity also shows the microcavity effect according to its cavity modes.

Original languageEnglish
Title of host publicationHigh-Temperature Photonic Structures
PublisherMaterials Research Society
Number of pages12
ISBN (Print)9781615677795
Publication statusPublished - 2009
Event2009 MRS Spring Meeting - San Francisco, CA, United States
Duration: 2009 Apr 132009 Apr 17

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Conference2009 MRS Spring Meeting
Country/TerritoryUnited States
CitySan Francisco, CA


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