Enhanced circular dichroism via slow light in dispersive structured media

Jesper Goor Pedersen, Asger Mortensen

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Resumé

Circular dichroism (CD) is in widespread use as a means of determining enantiomeric excess. We show how slow-light phenomena in dispersive structured media allow for a reduction in the required optical path length of an order of magnitude. The same ideas may be used to enhance the sensitivity of CD measurements while maintaining the same optical path length through the sample. Finally, the sensitivity may be enhanced in frequency regimes where CD data are typically not accessible due to a modest chiral response of the enantiomers. ©2007 American Institute of Physics
OriginalsprogEngelsk
TidsskriftApplied Physics Letters
Vol/bind91
Udgave nummer21
Sider (fra-til)213501
ISSN0003-6951
DOI
StatusUdgivet - 2007
Udgivet eksterntJa

Fingeraftryk

dichroism
optical paths
sensitivity
enantiomers
physics

Citer dette

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Enhanced circular dichroism via slow light in dispersive structured media. / Pedersen, Jesper Goor; Mortensen, Asger.

I: Applied Physics Letters, Bind 91, Nr. 21, 2007, s. 213501.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

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N2 - Circular dichroism (CD) is in widespread use as a means of determining enantiomeric excess. We show how slow-light phenomena in dispersive structured media allow for a reduction in the required optical path length of an order of magnitude. The same ideas may be used to enhance the sensitivity of CD measurements while maintaining the same optical path length through the sample. Finally, the sensitivity may be enhanced in frequency regimes where CD data are typically not accessible due to a modest chiral response of the enantiomers. ©2007 American Institute of Physics

AB - Circular dichroism (CD) is in widespread use as a means of determining enantiomeric excess. We show how slow-light phenomena in dispersive structured media allow for a reduction in the required optical path length of an order of magnitude. The same ideas may be used to enhance the sensitivity of CD measurements while maintaining the same optical path length through the sample. Finally, the sensitivity may be enhanced in frequency regimes where CD data are typically not accessible due to a modest chiral response of the enantiomers. ©2007 American Institute of Physics

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