1.2k citations · 2.6k across the 10 of their papers we have counts for
10 papers
Raman-gain induced loss-compensation in whispering-gallery-microresonators and single-nanoparticle detection with whispering-gallery Raman-microlasers
Sahin Kaya Ozdemir, Jiangang Zhu, Xu Yang +6
Recently optical whispering-gallery-mode resonators (WGMRs) have emerged as promising platforms to achieve label-free detection of nanoscale objects and to reach single molecule se…
Statistics of multiple-scatterer induced frequency splitting in whispering gallery microresonators and microlasers
Lina He, Sahin Kaya Ozdemir, Jiangang Zhu +3
We investigate numerically and experimentally the statistics of the changes in the amount of frequency splitting upon the adsorption of particles one-by-one into the mode volume of…
Detecting single viruses and nanoparticles using whispering gallery microlasers
Lina He, Sahin Kaya Ozdemir, Jiangang Zhu +2
Detection and characterization of individual nano-scale particles, virions, and pathogens are of paramount importance to human health, homeland security, diagnostic and environment…
Estimation of Purcell factor from mode-splitting spectra in an optical microcavity
Sahin Kaya Ozdemir, Jiangang Zhu, Lina He +1
We investigate scattering process in an ultra-high-Q optical microcavity coupled to subwavelength scatterers by introducing "splitting quality" Qsp, a dimensionless parameter defin…
Demonstration of mode splitting in an optical microcavity in aqueous environment
Woosung Kim, Sahin Kaya Ozdemir, Jiangang Zhu +2
Scatterer induced modal coupling and the consequent mode splitting in a whispering gallery mode resonator is demonstrated in aqueous environment. The rate of change in splitting as…
Ultra-sensitive detection of mode splitting in active optical microcavities
Lina He, Sahin Kaya Ozdemir, Jiangang Zhu +1
Scattering induced mode splitting in active microcavities is demonstrated. Below the lasing threshold, quality factor enhancement by optical gain allows resolving, in the wavelengt…
Self-pulsation in fiber-coupled on-chip microcavity lasers
Lina He, Sahin Kaya Ozdemir, Jiangang Zhu +1
We report self-pulsation in an erbium-doped silica toroidal microcavity laser coupled to a tapered fiber and investigate the effects of pump power and taper-cavity coupling conditi…
Scatterer induced mode splitting in poly(dimethylsiloxane) coated microresonators
Lina He, Sahin Kaya Ozdemir, Jiangang Zhu +1
We investigate scatterer induced mode splitting in a composite microtoroidal resonator (Q ~ 10^6) fabricated by coating a silica microtoroid (Q ~ 10^7) with a thin poly(dimethylsil…
Controlled Manipulation of Mode Splitting in an Optical Microcavity by Two Rayleigh Scatterers
Jiangang Zhu, Sahin Kaya Ozdemir, Lina He +1
We report controlled manipulation of mode splitting in an optical microresonator coupled to two nanoprobes. It is demonstrated that, by controlling the positions of the nanoprobes,…
On-chip Single Nanoparticle Detection and Sizing by Mode Splitting in an Ultra-high-Q Microresonator
Jiangang Zhu, Sahin Kaya Ozdemir, Yun-Feng Xiao +4
The ability to detect and size individual nanoparticles with high resolution is crucial to understanding behaviours of single particles and effectively using their strong size-depe…