THz thermal emission from a 1D photonic crystal

Zimmerman, IA; Wu, Z; Xin, H; Ziolkowski, R

THz thermal emission from a 1D photonic crystal

Zimmerman, IA Wu, Z Xin, H Ziolkowski, R

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Publication Type:: Conference Proceeding
Citation:: Proceedings of SPIE - The International Society for Optical Engineering, 2011, 7938
Issue Date:: 2011-06-09

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Field	Value	Language
dc.contributor.author	Zimmerman, IA	en_US
dc.contributor.author	Wu, Z	en_US
dc.contributor.author	Xin, H	en_US
dc.contributor.author	Ziolkowski, R https://orcid.org/0000-0003-4256-6902	en_US
dc.date.issued	2011-06-09	en_US
dc.identifier.citation	Proceedings of SPIE - The International Society for Optical Engineering, 2011, 7938	en_US
dc.identifier.isbn	9780819484758	en_US
dc.identifier.issn	0277-786X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/120510
dc.description.abstract	We are exploring the degree to which one can control the spectral emission of heated photonic crystals (or, more generally, electromagnetic crystal) structures in the THz frequency range. Because THz frequencies are well below the room temperature thermal emission maximum, this configuration may realize a low power but extremely low cost incoherent broadband THz source. Electromagnetic crystals are structures whose periodicity either enhances or reduces the associated photonic density of states over some frequency range. Consequently, they either enhance or reduce its thermal emission over the same frequency range. Thermal radiation from electromagnetic crystals has been studied theoretically and experimentally for higher frequency ranges, but usually for infinite lattices. We have experimentally and theoretically investigated a simple 1D, bi-layered electromagnetic crystal structure composed of air and silicon slabs. We have calculated the emissivity using Kirchhoff's thermal radiation law, as well as by calculating the density of states directly, and have compared successfully those results to the experimental values. Our ultimate goal is to be able to control the spectral emission of an electromagnetic crystal in the THz region (or other wavelength ranges, such as the infrared) by engineering its band structure. Controlled thermal emission, i.e., thermal management, could be used for applications as diverse as solar energy convertors, thermoelectric devices, and integrated circuits. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).	en_US
dc.relation.ispartof	Proceedings of SPIE - The International Society for Optical Engineering	en_US
dc.relation.isbasedon	10.1117/12.874450	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	THz thermal emission from a 1D photonic crystal	en_US
dc.type	Conference Proceeding
utslib.citation.volume	7938	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	1005 Communications Technologies	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
utslib.copyright.status	closed_access	*
pubs.publication-status	Published	en_US
pubs.volume	7938	en_US

Abstract:

We are exploring the degree to which one can control the spectral emission of heated photonic crystals (or, more generally, electromagnetic crystal) structures in the THz frequency range. Because THz frequencies are well below the room temperature thermal emission maximum, this configuration may realize a low power but extremely low cost incoherent broadband THz source. Electromagnetic crystals are structures whose periodicity either enhances or reduces the associated photonic density of states over some frequency range. Consequently, they either enhance or reduce its thermal emission over the same frequency range. Thermal radiation from electromagnetic crystals has been studied theoretically and experimentally for higher frequency ranges, but usually for infinite lattices. We have experimentally and theoretically investigated a simple 1D, bi-layered electromagnetic crystal structure composed of air and silicon slabs. We have calculated the emissivity using Kirchhoff's thermal radiation law, as well as by calculating the density of states directly, and have compared successfully those results to the experimental values. Our ultimate goal is to be able to control the spectral emission of an electromagnetic crystal in the THz region (or other wavelength ranges, such as the infrared) by engineering its band structure. Controlled thermal emission, i.e., thermal management, could be used for applications as diverse as solar energy convertors, thermoelectric devices, and integrated circuits. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

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http://hdl.handle.net/10453/120510