Observation and characterization of mode splitting in microsphere resonators in aquatic environment
arXiv:1103.2398 · doi:10.1063/1.3571555
Abstract
Whispering gallery mode (WGM) optical resonators utilizing resonance shift (RS) and mode splitting (MS) techniques have emerged as highly sensitive platforms for label-free detection of nano-scale objects. RS method has been demonstrated in various resonators in air and liquid. MS in microsphere resonators has not been achieved in aqueous environment up to date, despite its demonstration in microtoroid resonators. Here, we demonstrate scatterer-induced MS of WGMs in microsphere resonators in water. We determine the size range of particles that induces MS in a microsphere in water as a function of resonator mode volume and quality factor. The results are confirmed by the experimental observations.
4 Pages, 5 Figures, 13 References
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- Controlled coupling of counterpropagating whispering-gallery modes by a single Rayleigh scatterer: a classical problem in a quantum optical light
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Cited by in corpus (6)
- Raman-gain induced loss-compensation in whispering-gallery-microresonators and single-nanoparticle detection with whispering-gallery Raman-microlasers
- Ultra-high-Q free space coupling to microtoroid resonators
- Detection and size measurement of individual hemozoin nanocrystals in aquatic environment using a whispering gallery mode resonator
- Mass sensing by detecting the quadrature of a coupled light field
- Theory of the nanoparticle-induced frequency shifts of whispering-gallery-mode resonances in spheroidal optical resonators
- Microspherical photonics: Giant resonant light forces, spectrally resolved optical manipulation, and coupled modes of microcavity arrays