A high-reflectivity high-Q micromechanical Bragg-mirror
arXiv:cond-mat/0607771 · doi:10.1063/1.2393000
Abstract
We report on the fabrication and characterization of a micromechanical oscillator consisting only of a free-standing dielectric Bragg mirror with high optical reflectivity and high mechanical quality. The fabrication technique is a hybrid approach involving laser ablation and dry etching. The mirror has a reflectivity of 99.6%, a mass of 400ng, and a mechanical quality factor Q of approximately 10^4. Using this micromirror in a Fabry Perot cavity, a finesse of 500 has been achieved. This is an important step towards designing tunable high-Q high-finesse cavities on chip.
3 pages, 2 figures
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- Cavity Optomechanics
- Optomechanical entanglement between a movable mirror and a cavity field
- Creating and probing macroscoping entanglement with light
- Energetics of quantum correlations
- Observation of back-action cancellation in interferometric and weak force measurements
- Monocrystalline AlGaAs heterostructures for high-reflectivity high-Q micromechanical resonators in the MHz regime
- Radiation-pressure self-cooling of a micromirror in a cryogenic environment
- Mechanically Compliant Grating Reflectors for Optomechanics
- Controllable nonlinear effects in a hybrid optomechanical semiconductor microcavity containing a quantum dot and Kerr medium
- Engineering entanglement mechanically
- Quantum Optical Response of a Hybrid Optomechanical Device embedded with a Qubit
- Coherent scattering of a Multiphoton Quantum Superposition by a Mirror-BEC