129 citations · 808 across the 17 of their papers we have counts for
17 papers
Pump induced lasing suppression in Yb:Er-doped microlasers
Fuchuan Lei, Yong Yang, Jonathan Ward +1
A pump source is one of the essential prerequisites in order to achieve lasing, and, in most cases, a stronger pump leads to higher laser power at the output. However, this behavio…
All-Optical Nanopositioning of High-Q Silica Microspheres
Rafino M. J. Murphy, Fuchuan Lei, Jonathan M. Ward +2
A tunable, all-optical, coupling method has been realized for a high-\textit{Q} silica microsphere and an optical waveguide. By means of a novel optical nanopositioning method, ind…
Bandpass transmission spectra of a whispering-gallery microcavity coupled to an ultrathin fiber
Fuchuan Lei, Rafino M. J. Murphy, Jonathon M. Ward +2
Tapered fibers with diameters ranging from 1-4 micron are widely used to excite the whispering-gallery (WG) modes of microcavities. Typically, the transmission spectrum of a WG cav…
Tunable erbium-doped microbubble laser fabricated by sol-gel coating
Yong Yang, Fuchuan Lei, Sho Kasumie +4
In this work, we show that the application of a sol-gel coating renders a microbubble whispering gallery resonator into an active device. During the fabrication of the resonator, a…
Cavity ring-up spectroscopy for dissipative and dispersive sensing in a whispering gallery mode resonator
Yong Yang, Ramgopal Madugani, Sho Kasumie +2
In whispering gallery mode resonator sensing applications, the conventional way to detect a change in the parameter to be measured is by observing the steady state transmission spe…
Four-wave mixing parametric oscillation and frequency comb generation at visible wavelengths in a silica microbubble resonator
Yong Yang, Xuefeng Jiang, Sho Kasumie +5
Frequency comb generation in microresonators at visible wavelengths has found applications in a variety of areas such as metrology, sensing, and imaging. To achieve Kerr combs base…