Terahertz emission from black silicon

Terahertz emission from black silicon

We report on a terahertz emitter made out of black silicon. The black surface structure absorbs the whole optical pump power in the very surface. In contrast to expectations for indirect semiconductors, the black structure shows an emission in the terahertz range. The emitted radiation of the black...

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Bibliographic Details
Published in:Applied physics letters Vol. 93; no. 9; pp. 091106 - 091106-3
Main Authors: Hoyer, P., Theuer, M., Beigang, R., Kley, E.-B.
Format: Journal Article
Language:English
Published: American Institute of Physics 01-09-2008
Online Access:Get full text
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Summary:We report on a terahertz emitter made out of black silicon. The black surface structure absorbs the whole optical pump power in the very surface. In contrast to expectations for indirect semiconductors, the black structure shows an emission in the terahertz range. The emitted radiation of the black silicon crystal is characterized for different parameters using terahertz time-domain spectroscopy.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2978096