Coherent thermal emission by microstructured waveguides

被引：27

作者：

Joulain, Karl ^{[1
]}

Loizeau, Alexandre ^{[1
]}

机构：

[1] ENSMA, Lab Etud Therm, F-86960 Futuroscope, France

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2007年 / 104卷 / 02期

关键词：

thermal radiation; optical waveguides and couplers; coherence;

D O I：

10.1016/j.jqsrt.2006.07.019

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Following Greffet et al. [Coherent emission of light by thermal sources. Nature 2002;416:61-4], we study in this article, the possibility to engineer thermal coherent sources with waveguides. The idea is to rule a grating on a waveguide made of a slice of germanium deposited on a participating media such as glass. The guided waves, thermally excited are coupled to the far field by the grating and increase the system emissivity in certain directions and wavelengths. We numerically compute the diffraction of a plane wave by the grating by a rigorous coupled waves algorithm (RCWA). The reflected, transmitted and absorbed energy calculated allows to obtain the system emissivity by means of the Kirchhoff law. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：208 / 216

页数：9

共 10 条

[1] Thermal antenna behavior for thin-film structures [J].