Deformed Microcavity for Far Field Biosensing

Details Deformed Microcavity for Far Field Biosensing Deformed Microcavity for Far Field Biosensing

2010-02-03

arxiv.org/abs/1002.0802v1

Physics

Optics

Scientific paper

Here we demonstrate a new concept for designing an ultra-sensitive deformed cavity biosensor. Owning to the breaking of rotational symmetry, the field distribution is not uniform along the cavity boundary and results in the dependence of spectra shift and mode splitting on the position of a scatter. In this case, the deformed cavity sensor can be extremely sensitive to the location of particle binding on the cavity boundary. Moreover, the directional emission from the deformed microcavity provides a possibility to detect a single particle or molecule in the far field.

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