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We demonstrate a new type of optical MEMS that is having most of its walls made of liquids. Examples include (1) experimental demonstration of water-walled microfluidic devices with optical finesse over a million as well as (2) cavity optomechanics at 40 MHz vibrational rates in a droplet of oil
We present non-paraxial shape-preserving accelerating electromagnetic wavepackets propagating in micro-sized curved surfaces, revealing exotic trajectories and polarization rotation dynamics caused by the interplay of interference effects and the curvature of space.
We bridge between optomechanics and microfluidics by experimentally demonstrating optically excited vibrations. Our device enables extending optomechanics to non-solid phases of matter in a fluid containing microcapillary.
We experimentally demonstrate the energy-reversed counterpart to Brillouin lasers, resulting in the cooling of Brownian surface-acoustic-wave whispering-gallery resonances by light in a silica microsphere resonator.
We experimentally show mechanical vibrations that are excited by radiation pressure in a fluid containing silica resonator. Vibrations at rates from 8 to 140 MHz are measured while liquid or gas is inside the resonator.
We experimentally demonstrate simultaneous continuous-wave high-harmonic generation and Raman lasing in a periodically-poled lithium niobate whispering-gallery resonator, allowing spectral lines which span a 2-octave frequency band at a record-low pump power of 200mW.
We describe and experimentally demonstrate an optomechanical oscillator where light drives a surface mechanical mode of a spherical resonator, using a combination of photoelastic scattering and optical electrostriction. These oscillators are shown to have discretely-selectable frequencies ranging from 50 MHz to 1.5 GHz on a single silica microsphere device. We also report on initial measurements of...
We experimentally demonstrate the excitation of a mechanical Rayleigh surface mode through optical electrostriction in a silica microsphere resonator. These modes have applications in optomechanical photonic oscillators and surface acoustic wave based sensing.
We analyze circumferentially circulating mechanical whispering-gallery modes [WGM] resonating in a micron scaled silica sphere. We recently showed that such modes can be excited optically. A variety of modes are calculated in which the deformation is polar, radial or azimuthal. Additionally, we calculate Rayleigh WGMs for which points on the surface follow a circular path.
We propose emitter of high-order harmonics that is driven by a low-power continues-wave laser. The driving field is enhanced within a micro-resonator and further focused into sub-wavelength hot-spots by plasmonic nano-particles that are located near its surface.
We present a new technology allowing on-chip integration of a micro-resonator and its energy source for fundamental studies and commercial applications. As a proof-of-concept we demonstrate four-wave mixing and Raman lines.
Radiation pressure is used to excite vibrational modes of an optical micro-cavity at GHz rates. Many spectral lines associated with high-order vibrational modes are measured. Perturbation of the cavity geometry is observed to induce splitting of the spectral lines.
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