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We review fabrication and optics of polymeric high-Q whispering gallery mode resonators. They are employed as bio-sensors featuring selective parallel functionalization of arrays and integration into lab-on-a-chip systems. Liquid crystalline elastomers enable wide tunability of resonances. Elastomer substrates allow photonic molecules with tunable coupling gap.
We report on efficient free-space read-out of whispering-gallery mode microlasers using circular micromirrors. A ten-fold improvement in detection efficiency can be achieved by directing emission from all azimuthal angles of the cavity to the detector.
We propose an on-chip nano-horm-shaped metal-clad cavity. The proposed device is 0.8 µm in height-half the size of the previously reported devices— and achieves the quality factor of 1000 and effective volume of 0.31(λ/n)3.
We demonstrate that judicious selection of mirrors/substrates, operational frequency, and graphene location inside a cavity yields unprecedented optical forces on graphene, while tolerably modifies the cavity Q.
The work presented here details the wafer-level fabrication and integration of aluminum nitride (AlN) micro resonators into hermetic micro environments. By etching cavities into the lid wafer and then bonding the lid wafer to a wafer of AlN micro resonators, a hermetic micro environment is created. After bonding, the lid wafer is thinned by plasma etching to expose individual die. This sequence presents...
Coherent coupling between whispering gallery modes (WGMs) is studied in almost identical (size deviation < 0.03%) polystyrene bispheres with average sizes varying from 2.9 to 6 mum. In a special geometrical configuration peculiar kite shapes are observed in the spectral images of such photonic molecules. The origin of these kites is explained due to coupling of multiple pairs of azimuthal modes...
We propose many-element cascaded-resonator devices with gapless non-evanescent inter-cavity and waveguide-to-cavity coupling using double-notch-shaped microdisk resonators. We demonstrate such devices with up to 50 elements in a silicon nitride-on-silica substrate.
We present design and fabrication of two-dimensional photonic crystal cavities made in nanoporous silicon luminescent at 700-800 nm. Enhancement in photoluminescence extraction efficiency at the resonant wavelength is expected due to Purcell effect.
Summary form only given. There is considerable interest in the study of light emission from optical cavities whose dimensions are of the order of a wavelength in all three dimensions. Most work has been carried out on etched structures. We propose and demonstrate a novel method for the fabrication of GaAs semiconductor optical microstructures by self-organization during molecular beam epitaxial growth...
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