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Showing 1 to 12 of 12 for “"Whispering Gallery Modes"”.
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Resonant Detection of Nano to Microscopic Objects Using Whispering Gallery Modes
<p>A micron sized glass sphere is able to confine light to its interior volume. The trapped light describes an orbital trajectory circumnavigating just below the microsphere surface. Whenever the light ray tries to escape it is sent back on its circular path by total internal reflection. The light …
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Developing the next-generation photoacoustic microscopy systems
… implementation of all-optical methods such as whispering gallery modes or Fabry-Perot sensors meet the aforementioned requirements of the next generation of PAI systems.
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Interfacial Dynamics and Applications in Optofluidics
High quality (Q) factor whispering gallery modes (WGMs) can induce nonlinear effects in liquid droplets through mechanisms such as radiation pressure, light scattering, thermocapillarity, Kerr nonlinearity, and thermal effect. However, such nonlinear effects have yet to be thoroughly investigated …
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Development of optomechanofluidic resonators
… (OMFRs) supporting both high-optical Q factor whispering-gallery modes and high-mechanical Q factor optomechanical modes have recently emerged as a novel sensor configuration able to respond to mass density, mechanical compressibility, and viscoelasticity of label-free cells and particles at …
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Computational Modelling of Nanoscale Interactions for Nanophotonics and Biosensing
… relies on the resonant properties of optical whispering gallery modes (WGMs) to detect single molecules and to probe their conformational changes. Whilst WGM-based biosensors have extraordinary sensitivity, it remains a challenge to extract information about the target molecules from the …
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Radiation Pressure induced Nonlinearity in Micro-droplet
… micro-spheres and micro-toroids can support whispering gallery modes (WGMs), where light circulates near the resonator surface and is confined by the total internal reflection at the dielectric boundary. Such resonators can exhibit very high quality (Q) factors, since the resonator surface …
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Chip-scale Photonic Devices for Light-matter Interactions and Quantum Information Processing
… with rational caustics are proposed and interior whispering gallery modes in monolithic silicon mesoscopic microcavities are experimentally demonstrated. These microcavities possess unique robustness of cavity quality factor against roughness Rayleigh scattering. In Chapter 3, air-slot mode-gap …
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Whispering gallery mode microcavities: from fabrication to applications
… cooling works of a microsphere pendulum using a whispering gallery mode (WGM) cavity-based photonic molecule scheme. In the course of implementing this scheme, microcavity devices, such as microspheres and microbubbles were studied for topics as diverse as optomechanics, photonics, laser tuning …
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Novel materials and optical waveguide systems for silicon photonics
… rings and disks resonators, we noticed the whispering gallery modes and the effect of the gap in the CRIT effect for a serially double-disks resonator. On a first time, we studied the serially coupled configuration CROW where each ring resonator is coupled to one another. For this structure, …
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Zinc oxide nanophotonics : toward quantum photonic technologies
… CL spectra of the ZnO microdisks reveal whispering gallery modes (WGMs) emission. Two different sizes (5 μm and 9 μm) of the ZnO microdisks were simulated to analyze the nature of light confinement in terms of geometrical optics. Respective analysis of the mode spacing and the mode …
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Optical Fiber Microstructures for Self-Contained Whispering Gallery Mode Excitation
… of these attractive features to their support of whispering gallery mode (WGM) resonances. The sensitivity of a resonance's frequency and Q to strain, temperature, and other parameters of the surrounding medium can be the basis for ultracompact modulators and sensors. Physically, WGMs are special …