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It is well known that the eigen frequency (f) of a harmonic oscillator is determined by the oscillator effective mass (meff) and spring constant (keff) according to the Hook's law equation. An optical whispering gallery microcavity, when the wavelength of the injected light coincides the cavity resonance, establishes tremendous amount of light circulating along its equator. For an ultra-high quality...
For the first time, we present a detailed analysis of the noise characteristics in micro-/nano-optomechanical resonators for inertial sensing including optomechanical-based accelerometers and gyroscopes, which provides useful guidance for developing high performance chip-scale integrated optomechanical inertial sensors in the future.
We report 50-milli-Hertz-linewidth optomechanical oscillation of a silica microsphere immersed in a buffer solution. Using the microsphere as a nanosensor, single 10-nm-radius silica beads and Bovine serum albumin (BSA) protein molecules were detected.
In this talk, we provide an overview of our recent progress in developing high-quality silicon carbide micro/nanophotonic devices and exploring nano-optomechanics on this platform.
We report the first demonstration of high-quality (Qi ∼ 2.8−3.2×103)3C silicon carbide photonic crystal nanobeams. With the strong optomechanical coupling (gOM/2π ∼ 100 GHz/nm), we observed clear optical transduction of the thermal mechanical motion of the coupled nanobeams.
We observed optomechanical oscillations at 384-kHz by immersing a silica microsphere in an aqueous environment. Despite of high dissipation, the device displays a laser threshold power of 0.98-mW and a mechanical Q of 1,648.
We demonstrate compact silicon microring resonators suspended in air with ultra-high optical quality, achieving an intrinsic quality factor of 9.2×105 in the telecom band for the resonator with a radius of 9 µm.
We report position-squared coupling six orders of magnitude larger than previously demonstrated, allowing measurement of as few as 652 phonons and presenting a practical route toward probing of single-phonon jumps and characterization of phonon statistics.
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