A Caltech Library Service. Abstract The dynamic back-action caused by electromagnetic forces radiation pressure in optical and microwave cavities is of growing interest. 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. We call these photonic and phononic crystal bandgap cavities optomechanical crystals. These structures merge the fields of cavity optomechanics and nanomechanics into nano-optomechanical systsms NOMS. 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.

These structures merge the fields of cavity optomechanics and nanomechanics into nano-optomechanical systsms NOMS. The second device focuses on just one of the doubly-clamped nanoscale beams of the Zipper. 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 easily within reach with simple modifications of the experimental apparatus. 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.

Back-action cooling, for example, is being pursued as a means of achieving the quantum ground state of macroscopic mechanical oscillators. We discuss the future of optomechanical crystals and provide new methods of calculating all the otptomechanical properties matt eichenfield thesis the structures. The dynamic back-action caused by electromagnetic forces radiation pressure in optical and microwave cavities is of growing interest.

Abstract The dynamic back-action caused by electromagnetic forces radiation pressure in optical and microwave cavities is of growing interest. No commercial reproduction, distribution, display or performance rights in this work are provided. Cavity optomechanics in photonic and phononic crystals: With the ability to readily interconvert photons and microwave-frequency phonons on the surface of a microchip, new chip-scale technologies can be created. In this thesis, two different nanometer-scale structures that use combinations matt eichenfield thesis gradient and radiation pressure optical forces are described theoretically and demonstrated experimentally.

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

Matt eichenfield thesis structures merge the fields of cavity optomechanics and nanomechanics into nano-optomechanical systsms NOMS. 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.

The miniscule effective volume of the mechanical mode corresponds to matt eichenfield thesis 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 easily within reach with simple modifications of the experimental apparatus.

By comparison, in microwave devices, low-loss superconducting structures have been used for gradient-force-mediated coupling to a nanomechanical oscillator of picogram mass.

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We show that, in addition to a photonic bandgap cavity, the periodic patterning of the beam also produces a phononic bandgap cavity matt eichenfield thesis localized mechanical modes having frequencies in the microwave regime. 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 matt eichenfield thesis weight of the structure.

Because the optical and mechanical modes occupy a volume more thantimes smaller than the volume of a single human cell, the matt eichenfield thesis interaction in this system is again at the fundamental limit set by optical diffraction.

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.

A Caltech Library Service. Citation Eichenfield, Matthew S.

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We call these photonic and phononic crystal bandgap cavities optomechanical crystals. The second device focuses on just one matt eichenfield thesis the doubly-clamped nanoscale beams of the Zipper. Optics; photonics; photonic crystals; phononic crystals; acoustics; physics; optomechanics; cavity optomechanics.