We show that, in addition to a photonic bandgap cavity, the periodic patterning of the beam also produces a phononic bandgap cavity with localized mechanical modes having frequencies in the microwave regime. The dynamic back-action caused by electromagnetic forces radiation pressure in optical and microwave cavities is of growing interest. Optics; photonics; photonic crystals; phononic crystals; acoustics; physics; optomechanics; cavity optomechanics. In this thesis, two different nanometer-scale structures that use combinations of gradient and radiation pressure optical forces are described theoretically and demonstrated experimentally. The second device focuses on just one of the doubly-clamped nanoscale beams of the Zipper. By comparison, in microwave devices, low-loss superconducting structures have been used for gradient-force-mediated coupling to a nanomechanical oscillator of picogram mass.

The mechanical modes of the beam probed with a background sensitivity only a factor of 4 above the standard quantum limit, and the application of less than a milliwatt of optical power is shown to increase the mechanical rigidity of the system by almost an order of magnitude. No commercial reproduction, distribution, display or performance rights in this work are provided. A Caltech Library Service. We discuss the future of optomechanical crystals and provide new methods of calculating all the otptomechanical properties of the structures. The combination of the small motional mass and strong optomechanical coupling allows each trapped photon to drive motion of an acoustic mode with a force more than 15 times the weight of the structure. Work in the optical domain has revolved around millimeter- or micrometer-scale structures using the radiation pressure force.

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A Caltech Library Service. No commercial reproduction, distribution, display or performance matt eichenfield thesis in this work are provided. We show that, in addition to a photonic bandgap matt eichenfield thesis, the periodic patterning of the beam also produces a phononic bandgap cavity with localized mechanical modes having frequencies in the microwave regime. These structures merge the fields of cavity optomechanics and nanomechanics into nano-optomechanical systsms NOMS.

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Optics; photonics; photonic crystals; phononic crystals; acoustics; physics; optomechanics; cavity optomechanics. We call these photonic and phononic crystal bandgap cavities optomechanical crystals. The mechanical modes of the beam probed with a background sensitivity only a factor of 4 above the standard quantum limit, and the application of less than a milliwatt of optical power is shown to increase the mechanical rigidity of the system by almost an order of magnitude.

In this thesis, two different nanometer-scale structures that use combinations of gradient and matt eichenfield thesis pressure optical forces are described theoretically and demonstrated experimentally.

Cavity optomechanics in matt eichenfield thesis and phononic crystals: By comparison, in microwave devices, low-loss superconducting structures have been used for gradient-force-mediated coupling to a matt eichenfield thesis oscillator of picogram mass.

The optical mode of the coupled system is exquisitely sensitive to differential motion of the beams, producing optomechanical coupling right at the fundamental limit set by optical diffraction. We matt eichenfield thesis the future of optomechanical crystals and provide new methods of calculating all the otptomechanical properties of the structures.

More information and software credits. The second device focuses on just one of the doubly-clamped nanoscale beams of the Zipper.

Back-action cooling, for example, is being pursued as matt eichenfield thesis means of achieving the quantum ground state of macroscopic mechanical oscillators.

The dynamic back-action caused by electromagnetic forces radiation pressure in optical and microwave cavities is of growing interest.

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Abstract The dynamic back-action caused by electromagnetic forces radiation pressure matt eichenfield thesis optical and microwave cavities is of growing interest.

The miniscule effective volume of the mechanical mode corresponds to effective motional masses in the femtogram regime, which, coupled with the enormous optomechanical interaction and high optical and mechanical quality factors, allows transduction of microwave-frequency mechanical motion nearly at the standard quantum limit, with the standard quantum limit matt eichenfield thesis within reach with simple modifications of the experimental apparatus.

Citation Eichenfield, Matthew S. Work in the optical domain has revolved around millimeter- or micrometer-scale structures using the radiation pressure force. This provides a powerful method for matt eichenfield thesis actuating microwave-frequency mechanical oscillators on a chip, and we demonstrate an on-chip phonon laser that emits over microwave-frequency phonons per second with a ratio of frequency to linewidth of 2 million—characteristics similar to those of the first optical lasers.

Because the optical and mechanical modes occupy a volume more thantimes smaller than matt eichenfield thesis volume of a matt eichenfield thesis human cell, the optomechanical interaction in this system is again at the fundamental limit set by optical diffraction. With the ability to readily interconvert photons and microwave-frequency phonons on the surface of a microchip, new chip-scale technologies can be created.

The combination of the small motional mass and strong optomechanical coupling allows each trapped photon to drive motion of an acoustic mode with a force more than 15 times the weight of the structure.