Ultrahigh Q-frequency product for optomechanical disk resonators with a mechanical shield

Nguyen, Doan; Baker, Christopher G.; Hease, William; Sejil, Selsabil; Senellart, P.; Lemaı̂tre, A.; Ducci, S.; Leo, Giuseppe; Favero, Iván

doi:10.1063/1.4846515

Cited by 37 publications

(49 citation statements)

References 22 publications

(55 reference statements)

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“…be realized in strongly pre-stressed resonators [197][198][199], novel materials such as crystalline diamond [200] or strained crystalline materials [201], or by suppressing clamping losses with suitable architectures [202][203][204]. The realization of large mechanical quality factors allows to address questions including the nonadiabatic dynamics of strongly coupled modes [205], the coherent control of the mechanical state [206,207] as well as a more thorough understanding of nanomechanical coherence [206,208,209].…”

Section: Nanomechanicsmentioning

confidence: 99%

Nanophononics: state of the art and perspectives

et al. 2016

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Abstract. Understanding and controlling vibrations in condensed matter is emerging as an essential necessity both at fundamental level and for the development of a broad variety of technological applications. Intelligent design of the band structure and transport properties of phonons at the nanoscale and of their interactions with electrons and photons impact the efficiency of nanoelectronic systems and thermoelectric materials, permit the exploration of quantum phenomena with micro-and nanoscale resonators, and provide new tools for spectroscopy and imaging. In this colloquium we assess the state of the art of nanophononics, describing the recent achievements and the open challenges in nanoscale heat transport, coherent phonon generation and exploitation, and in nano-and optomechanics. We also underline the links among the diverse communities involved in the study of nanoscale phonons, pointing out the common goals and opportunities.

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Section: Nanomechanicsmentioning

confidence: 99%

Nanophononics: state of the art and perspectives

et al. 2016

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“…The radial-breathing modes having a node at the disk center, they naturally minimize clamping losses associated to the pedestal's displacement. If early work attempted to estimate the clamping of a disk resonator by semi-analytical means [17,18], a numerical FEM approach allows for direct predictive calculations [19,20]. It shows that the fundamental radial breathing mode at 1.4 GHz reaches for example a mechanical quality factor of 10 4 for a pedestal radius of 100 nm attainable in the fabrication.…”

Section: An Optical and Mechanical Resonatormentioning

confidence: 99%

“…The effect of air damping on the flexural motion of GaAs disks has been investigated to prepare their use in fluidic environment [34] and the air-damping of in-plane disk motion leads to a contributed Q in the 10 3 -10 4 range [35]. In GHz GaAs disks radial breathing modes, the measured mechanical Q saturates around 2.10 3 in air when it approaches the 10 4 limit under vacuum and at low temperature [20]. The best GaAs disks reach a mechanical Q × f product of 10 13 at low temperature in current measurements, limited by clamping losses at the pedestal [20].…”

Section: On-chip Integration Of Gaas Disksmentioning

confidence: 99%

Gallium Arsenide Disks as Optomechanical Resonators

Favero

2014

Cavity Optomechanics

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The interaction of light with mechanical motion-optomechanics [1][2][3][4]-is now investigated in a wide variety of experimental settings. In the last years, the field also benefited from the advances of nanophotonics. We discuss here the merits of Gallium Arsenide (GaAs) optomechanical disk resonators, which bring together high mechanical frequency, ultra-strong optomechanical coupling and low optical/mechanical dissipation. Based on a relatively simple geometry, these miniature optomechanical resonators permit a complete on-chip optical integration, a natural interfacing with optically active elements and the combination with optoelectronics architectures typical of III-V semiconductors.

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“…The disks dimensions are 320 nm in thickness and 1.5 to 2 µm in radius. The pedestals are 1.7 µm high and their radii are smaller than 150 nm to minimize anchoring mechanical losses [33]. On the same chip, we include waveguides that address one, two and three disks in a unidirectional fashion.…”

mentioning

confidence: 99%

“…A picture of the complete sample structure is shown in the Supplemental Material ( gallery modes (WGMs) and mechanical radial breathing modes (RBMs) [31] that strongly couple through radiation pressure and photoelasticity, reaching an optomechanical coupling g 0 in the MHz range [32]. This enables fine optical control of mechanical motion in a large variety of physical environments, from cryogenic quantum operation to liquid immersion [33,34]. Monochromatic light at λ = 1.3 µm is evanescently coupled into the disks through integrated GaAs tapered waveguides [35], which also embed inverted tapers as input and output ports to suppress light back-reflections (see Supplemental Material Fig.…”

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confidence: 99%

Light-Mediated Cascaded Locking of Multiple Nano-Optomechanical Oscillators

et al. 2017

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Collective phenomena emerging from non-linear interactions between multiple oscillators, such as synchronization and frequency locking, find applications in a wide variety of fields. Optomechanical resonators, which are intrinsically non-linear, combine the scientific assets of mechanical devices with the possibility of long distance controlled interactions enabled by travelling light. Here we demonstrate light-mediated frequency locking of three distant nano-optomechanical oscillators positioned in a cascaded configuration. The oscillators, integrated on a chip along a coupling waveguide, are optically driven with a single laser and oscillate at gigahertz frequency. Despite an initial frequency disorder of hundreds of kilohertz, the guided light locks them all with a clear transition in the optical output. The experimental results are described by Langevin equations, paving the way to scalable cascaded optomechanical configurations.Synchronization and frequency locking have been observed in a large variety of contexts ranging from physics to biology, e.g. in classical coupled pendula [1], in coupled lasers [2], and in the rhythmic beating of pacemaker cells [3]. These phenomena have found practical applications in RF communication [4], signal-processing [5], novel computing and memory concepts [6,7], clock synchronization and navigation [8], as well as in phased locked loop circuits [9]. For these applications, micro-and nano-mechanical devices are known to present opportunities of integration and scalability [10][11][12][13][14][15] but more recently, optomechanical systems further emerged as new appealing candidates. Indeed they support non-linearly coupled optical and mechanical modes [16,17], and add to the mechanics the assets of optical techniques in terms of precision and long-distance communications [18][19][20][21][22][23][24][25].Light injected in an optomechanical cavity can deform it under the action of optical forces, and in the dynamical backaction regime can amplify its mechanical motion. When amplification overcomes mechanical dissipation, the system transits to a stable limit cycle, often referred to as optomechanical self-oscillation [26,27]. In the last years, several studies investigated the synchronization of such optomechanical oscillators [20][21][22]25]. The synchronization of two oscillators placed close to contact and sharing a common optical mode was reported in [20]. Recently, the same configuration was pushed up to 7 resonators [25]. Two spatially-separated oscillators integrated in a common optical racetrack cavity were also synchronized in [22]. The possibility of locking two optomechanical systems without sharing a common optical mode was implemented as well in [21], in two steps and with two lasers. The optical output of a first laser-driven optomechanical oscillator was transduced into an electrical signal, which was carried away to fed a distant electro-optic modulator. The latter modulated a second laser driving a second optomechanical oscillator, ultimately insuring phase lo...

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Ultrahigh Q-frequency product for optomechanical disk resonators with a mechanical shield

Cited by 37 publications

References 22 publications

Nanophononics: state of the art and perspectives

Nanophononics: state of the art and perspectives

Gallium Arsenide Disks as Optomechanical Resonators

Light-Mediated Cascaded Locking of Multiple Nano-Optomechanical Oscillators

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