Comparison of f-Q scaling in wineglass and radial modes in ring resonators

Tallur, Siddharth; Bhave, Sunil A.

doi:10.1109/memsys.2013.6474358

Cited by 8 publications

(6 citation statements)

References 11 publications

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“…125 While this system offers unmatched simplicity, small form-factor, and low power requirements, it has thus-far failed to match the performance of the larger quartz oscillator systems, which operate at similar oscillation frequencies (MHz range). While optomechanical devices are more easily scalable to higher frequencies (up to 10 GHz has been achieved 126,127 ), doing so greatly increases the regenerative oscillation threshold power, which is proportional to the mechanical frequency squared. This fact combined with the conflicting demand of low mass for low threshold and high mass for lower phase-noise leads one to follow an alternative hybrid approach, which I label the OMO (see Figure 7(c)).…”

Section: Optomechanical Oscillatorsmentioning

confidence: 99%

Applications of cavity optomechanics

Metcalfe

2014

Applied Physics Reviews

235

203

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Cavity-optomechanics" aims to study the quantum properties of mechanical systems. A common strategy implemented in order to achieve this goal couples a high finesse photonic cavity to a high quality factor mechanical resonator. Then, using feedback forces such as radiation pressure, one can cool the mechanical mode of interest into the quantum ground state and create non-classical states of mechanical motion. On the path towards achieving these goals, many near-term applications of this field have emerged. After briefly introducing optomechanical systems and describing the current state-of-the-art experimental results, this article summarizes some of the more exciting practical applications such as ultra-sensitive, high bandwidth accelerometers and force sensors, low phase noise x-band integrated microwave oscillators and optical signal processing such as optical delay-lines, wavelength converters, and tunable optical filters. In this rapidly evolving field, new applications are emerging at a fast pace, but this article concentrates on the aforementioned labbased applications as these are the most promising avenues for near-term real-world applications. New basic science applications are also becoming apparent such as the generation of squeezed light, testing gravitational theories and for providing a link between disparate quantum systems. V C 2014 AIP Publishing LLC. [http://dx.

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Section: Optomechanical Oscillatorsmentioning

confidence: 99%

Applications of cavity optomechanics

Metcalfe

2014

Applied Physics Reviews

235

203

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“…The reported work mainly focuses on one or several loss sources on certain order WGMs. The anchor loss of WGM resonators has been qualitatively studied in [ 23 , 24 ], which tends to be negligible with increasing mode order, while the dominant dissipations of the high-order modes have not been clarified. The effects of thermoelastic damping (TED) and phonon-phonon interaction damping (PPID) on WGM resonators were analyzed in [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Dominant Loss Mechanisms of Whispering Gallery Mode RF-MEMS Resonators with Wide Frequency Coverage

Chen

Jia

Liu

et al. 2020

Sensors

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This work investigates the dominant energy dissipations of the multi-frequency whispering gallery mode (WGM) resonators to provide an insight into the loss mechanisms of the devices. An extensive theory for each loss source was established and experimentally testified. The squeezed film damping (SFD) is a major loss for all the WGMs at atmosphere, which is distinguished from traditional bulk acoustic wave (BAW) resonators where the high-order modes suffer less from the air damping. In vacuum, the SFD is negligible, and the frequency-dependent Akhiezer damping (AKE) has significant effects on different order modes. For low-order WGMs, the AKE is limited, and the anchor loss behaves as the dominant loss. For high-order modes with an extended nodal region, the anchor loss is reduced, and the AKE determines the Q values. Substantial Q enhancements over four times and an excellent f × Q product up to 6.36 × 1013 at 7 K were achieved.

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“…For single-frequency WGM resonators, certain loss mechanisms were studied [11][12][13][14]. However, for multi-mode WGM resonators with wide frequency coverages, up to now, the dominant dissipations of each mode under different conditions have not been clarified, although it is significant in releasing their high-end potentials.…”

Section: Introductionmentioning

confidence: 99%

Loss mechanisms of multi-frequency whispering gallery mode RF-MEMS resonators

Liu

Chen²,

Lu³

et al. 2022

J. Micromech. Microeng.

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This work investigates the dominant loss mechanisms of the multi-frequency whispering gallery mode (WGM) resonators theoretically and experimentally, which provides a deep understanding about the working principles of the devices and guidance on their high-end applications. For the first time, the distinct AKE effects on various order WGMs were comprehensively clarified. At atmosphere, the air damping, which is conventionally expected to be negligible in high-order bulk acoustic wave (BAW) modes, is nonnegligible for all the WGMs. In vacuum, substantial Q enhancements more than 2 times were obtained. The high-order WGMs benefit more f × Q improvement from the high vacuum than the low-order ones, achieving a promising f × Q product of 1.16×1013. What’s more, the Q dynamics over a wide temperature range were characterized, which matched well with the theoretical analysis. The Akhiezer damping (AKE) is comparable with anchor loss in low-order modes, while it becomes dominated in the high-order ones. Therefore, the high-order WGMs exhibit higher Q enhancements at cryogenic temperatures. An excellent f × Q product up to 5.91×1013 was implemented at 7 K.

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Comparison of f-Q scaling in wineglass and radial modes in ring resonators

Cited by 8 publications

References 11 publications

Applications of cavity optomechanics

Applications of cavity optomechanics

Dominant Loss Mechanisms of Whispering Gallery Mode RF-MEMS Resonators with Wide Frequency Coverage

Loss mechanisms of multi-frequency whispering gallery mode RF-MEMS resonators

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