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Showing 1 to 20 of 644 for “"cavities"”.
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Frequency shifted feedback cavities
Includes bibliographical references (pages 164-165).
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Non-suspended optomechanical cavities
… an alternative, we have developed optomechenical cavities based on a gallium phosphide-on-diamond platform with no substrate removal. This new platform takes advantage of the high speed of sound in diamond to confine phonons via total internal acoustic reflection. We have designed a device that is …
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Nucleation of Cavities in Gels
… may lead to the nucleation and growth of cavities within the gel, which is likely to cause the debonding of the material from the support it is attached to. In this dissertation, we focus on the cavitation in a gel occupying a spherical domain, subject to either displacement boundary …
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High intensity femtosecond enhancement cavities
To produce extreme ultraviolet radiation via high harmonic generation (HHG) in rare gases, light intensities in excess of 1014 W/cm 2 are required. Usually such high intensity are obtained by parametric amplification of laser pulses, which in turn reduces the pulse repetition rate to a few kHz. …
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Ore sorting using microwave resonant cavities
Bibliography: leaves 71-73.
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Plasma Processing of Superconducting Radio Frequency Cavities
… of superconducting radio frequency (SRF) cavities not only provides a chemical free and less expensive processing method, but also opens up the possibility for controlled modification of the inner surfaces of the cavity for better superconducting properties. The research was focused on the …
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Single atom detection in low finesse cavities
Im Rahmen dieser Doktorarbeit wurde der Grundstein gelegt für die Integration mikrooptischer Elements auf Atomchips. Dies beinhaltete theoretische und experimentelle Untersuchungen zur Möglichkeit der Detektion einzelner Atome mit Hilfe von optischen Resonatoren niedriger Güte. Hierfür wurde ein …
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Thermal convection in slender laterally-heated cavities
… convective flows in shallow and tall cavities with adiabatic or conducting horizontal boundaries and driven by differential heating of the two vertical end walls, are studied numerically over a range of Rayleigh numbers and Prandtl numbers. As the Rayleigh number increases, …
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The beam modes of general optical cavities
… for the numerical study of semiconductor laser cavities.
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Applications of long storage time optical cavities
… us. Often such experiments require high finesse cavities, and optical loss in these cavities is a critical parameter. In particular, for those cavities that deal with quantum systems, minimizing the cavity loss is crucial because any loss can easily degrade the fragile quantum states. One such …
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Electro-Mechanical Interactions in Superconducting Spoke -Loaded Cavities
… cavity at Argonne National Laboratory. These cavities are of interest in new heavy-ion and proton linear accelerators. We present a powerful method for characterizing arbitrary time-dependent Lorentz force induced detuning of superconducting cavities; the convolution of the Lorentz transfer …
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Localized deformation in soft solids around spherical cavities
… and evolution at the surface of contracting cavities embedded within elastomeric solids of varying degrees of crosslinking. Cavity contraction is achieved through evaporation of an embedded water droplet. In validation of theoretical predictions, strain-stiffening is found to govern both …
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Terahertz Second-Harmonic Generation in Extreme-Confinement Cavities
It remains a standing challenge to produce high-power electromagnetic sources operating in the spectral range of 0.1-10 THz (the “terahertz gap"), a frequency band for applications ranging from spectroscopy to security and high-speed wireless communications. In this thesis, we will analyze a method …
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Development of Superconducting Spoke Cavities for High-Velocity Applications
<p>To date, superconducting spoke cavities have been designed, developed, and tested for particle velocities up to β0 ~ 0.6, but there is a growing interest in possible applications of spoke cavities for high-velocity applications. The first task is to explore the design parameter space for …
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TUNING AND OPTOMECHANICS OF COUPLED PHOTONIC CRYSTAL NANOBEAM CAVITIES
… based on coupled photonic crystal nanobeam cavities, with studies including nano fabrication process development, device tuning with NEMS actuators, investigation of optical gradient force and tunable cavity optomechanics. High efficiency resonance tuning by electrostatically shifting the …
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Mechanisms of hot gas ingestion in turbine disk cavities
… from the mainstream flow path migrates into the cavities between stator and rotor disks. In order to mitigate the damage caused by these high-temperature gases, the cavities are purged with colder air from the compressor, and rim seals are used at the entrance from the mainstream. Various …
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Powder removal from internal cavities of 3D printed parts
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Use of dielectric material in muon accelerator RF cavities
… for the dielectric given, and several prototype cavities are built and tested with a network analyzer. Our proof of concept experiment shows the feasibility of further developing the design of dielectric loaded RF cavities. A design for a cavity to be used at higher power is discussed, along with …
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