Thermal radiation from two-dimensionally confined modes in microcavities

Authors
Maruyama, S Kashiwa, T Yugami, H Esashi, M
Citation
S. Maruyama et al., Thermal radiation from two-dimensionally confined modes in microcavities, APPL PHYS L, 79(9), 2001, pp. 1393-1395
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
0003-6951 → ACNP
Volume
79
Issue
9
Year of publication
2001
Pages
1393 - 1395
Database
ISI
SICI code
0003-6951(20010827)79:9<1393:TRFTCM>2.0.ZU;2-B
Abstract
A two-dimensional array of a microcavity with a high aspect ratio is made o n a Cr-coated Si surface using the micromachining technology. The thermal e mission spectra whose wavelength is close to the dimension of cavity apertu re (5 mum) are measured on samples with a different aspect ratio. The clear selective emission bands corresponding to the two-dimensionally confined e lectromagnetic modes are demonstrated experimentally. It is found that the low emissivity of the base material is essential to obtain the high spectra l selectivity of thermal radiation. The direction and polarization properti es are also examined. The dominant peaks of the emission spectra can be exp lained by a simple cavity resonator model. (C) 2001 American Institute of P hysics.