Linked Life Data

18542556

Source:http://linkedlifedata.com/resource/pubmed/id/18542556

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2008-6-10
pubmed:abstractText
We use finite-difference time-domain (FDTD) simulations to demonstrate enhanced infrared absorption in a photodetector covered with a microstructured metal film consisting of a metal-plasmon grating collector/ concentrator and sub-wavelength detector well; for circular gratings we use radial FDTD, and for linear gratings we use two-dimensional FDTD. We identify a figure of merit to quantify the improvement in signal-to-noise ratio of such a detector scheme. We optimize grating parameters for a circular grating surrounding a simple hole, showing that the signal-to-noise ratio can be improved by a factor of as much as 5.2, whereas the signal-to-noise improvement for comparable linear gratings is at most 1.7. In the case of the circular grating, this result is achieved with more than 400 times as much light absorbed in the hole as with a metal film but no grating.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1094-4087
pubmed:author
pubmed:issnType
Electronic
pubmed:day
31
pubmed:volume
16
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4588-96
pubmed:dateRevised
2009-11-3
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Enhancing the signal-to-noise ratio of an infrared photodetector with a circular metal grating.
pubmed:affiliation
Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA. rbhat@cumsl.msl.columbia.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.