Enhanced circular dichroism via slow-light in dispersive structured media

Details Enhanced circular dichroism via slow-light in dispersive structured media Enhanced circular dichroism via slow-light in dispersive structured media

2007-11-02

arxiv.org/abs/0711.0258v1

Appl. Phys. Lett. 91, 213501 (2007).

Physics

Optics

4 pages, 4 figures

Scientific paper

10.1063/1.2814937

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 is typically not accessible due to a modest chiral response of the enantiomers.

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