We report real time detection of individual nanoparticles down to R=20 nm using a high-Q whispering gallery mode (WGM) microresonator. The detection is based on resonance enhanced particle induced reflection and does not require monitoring resonance spectra.
© 2013 OSA
J. Zhu, S. K. Ozdemir, and L. Yang, "reflection detection of nanoparticles using whispering gallery microresonators," in CLEO: 2013, OSA Technical Digest (online) (Optical Society of America, 2013), paper CM2H.5.
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