Abstract Optical nonlinearities, such as thermo-optic mechanisms and free-carrier dispersion, are often considered unwelcome effects in silicon-based resonators and, more specifically, optomechanical cavities, since they affect, for instance, the relative detuning between an optical resonance excitation laser. Here, we exploit these nonlinearities their intercoupling with mechanical degrees of freedom a silicon nanobeam to unveil rich set fundamentally different complex dynamics. By smoothly...

The synchronization of coupled oscillators is a phenomenon found throughout nature. Mechanical are paradigmatic examples, but synchronizing their nanoscaled versions challenging. We report the mechanical dynamics pair optomechanical crystal cavities that, in contrast to previous works performed similar objects, intercoupled with link and support independent optical modes. In this regime they oscillate antiphase, which agreement predictions our numerical model that considers reactive...

The resonant enhancement of mechanical and optical interaction in optomechanical cavities enables their use as extremely sensitive displacement force detectors. In this Letter, we demonstrate a hybrid magnetometer that exploits the coupling between excitation spin waves ferromagnetic insulator breathing modes glass microsphere deposited on top. is mediated by magnetostriction material consequent driving microsphere. response thus relies spectral overlap resonance sphere, leading to peak...

Nanoelectro-opto-mechanical systems enable the synergistic coexistence of electrical, mechanical, and optical signals on a chip to realize new functions. Most technology platforms proposed for fabrication these so far are not fully compatible with mainstream CMOS technology, thus, hindering mass-scale utilization. We have developed platform nanoelectro-opto-mechanical that includes piezoelectric interdigitated transducers electronic driving mechanical nanocrystalline silicon nanobeams an...

Despite appealing high-symmetry properties that enable high quality factor and strong confinement, whispering gallery modes of spherical circular resonators have been absent from the field quantum-well exciton polaritons. Here we observe polaritons in a Gallium Arsenide microdisk cavity filled with Indium quantum wells, testbed materials polaritonics. Strong coupling is evidenced photoluminescence resonant spectroscopy, accessed through concomitant confocal microscopy near-field optical...

Abstract Spontaneous locking of the phase a coherent phonon source to an external reference is demonstrated in deeply sideband-unresolved optomechanical system. The high-amplitude mechanical oscillations are driven by anharmonic modulation radiation pressure force that result from absorption-mediated free-carrier/temperature limit cycle, i.e., self-pulsing. Synchronization observed when pump laser driving oscillator self-sustained state modulated radiofrequency tone. We employ pump-probe...

Optomechanical crystals, purposely designed and fabricated semiconductor nanostructures, are used to enhance the coupling between electromagnetic field mechanical vibrations of matter at nanoscale. However, in real optomechanical imperfections open extra channels where transfer energy is lost, reducing eficiency. Here, we quantify role disorder a paradigmatic one-dimensional crystal with full phononic photonic bandgaps. We show how can be exploited as resource beyond engineered structures,...

Optical forces can set tiny objects in states of mechanical self-sustained oscillation, spontaneously generating periodic signals by extracting power from steady sources. Miniaturized coherent phonon sources are interesting for applications such as mass-force sensing, intra-chip metrology and time-keeping among others. In this paper, we review several mechanisms techniques that drive a mode into the lasing regime exploiting radiation pressure force optomechanical cavities, namely stimulated...

Using conical optical fibers, we explore new methods for coupling light to nanophotonic structures operated in constrained environments. With a single-sided fiber taper, demonstrate efficient an on-chip bus waveguide immersed liquid. In the aim of into target whispering gallery disk resonator, then replace such with two fibers joined face face. This latter approach leads highly superior 90% and is shown be stable within vibrating pulse tube cryostat operating at low temperatures. It...

Silicon on insulator photonics has offered a versatile platform for the recent development of integrated optomechanical circuits. However, there are some constraints such as high cost wafers and limitation to single physical device level. In present work we investigate nanocrystalline silicon an alternative material devices. particular, demonstrate that crystal cavities fabricated have optical mechanical properties enabling non-linear dynamical behaviour effects...

A strong trend for quantum based technologies and applications follows the avenue of combining different platforms to exploit their complementary technological functional advantages. Micro nano-mechanical devices are particularly suitable hybrid integration due easiness fabrication at multi-scales pervasive coupling with electrons photons. Here, we report on a nanomechanical platform where silicon chip is combined an aluminum nitride layer. Exploiting AlN piezoelectricity, Surface Acoustic...

Optomechanical structures are well suited to study photon-phonon interactions, and they also turn out be potential building blocks for phononic circuits quantum computing. In circuits, in which information is carried processed by phonons, optomechanical could used as interfaces photons electrons thanks their excellent coupling efficiency. Among the components required such create coherent phonon sources detectors. Complex functions other than emission or detection remain challenging...

Optomechanical crystal cavities (OMC) have rich perspectives for detecting and indirectly analysing biological particles, such as proteins, bacteria viruses. In this work we demonstrate the working principle of OMCs operating under ambient conditions a sensor submicrometer particles by optically monitoring frequency shift thermally activated mechanical modes. The resonator has been specifically designed so that cavity region supports particular family low modal-volume modes, commonly known...

Abstract Controlling thermal energy transfer at the nanoscale and properties has become critically important in many applications since it often limits device performance. In this study, effects on conductivity arising from structure of free‐standing nanocrystalline silicon films increasing surface‐to‐volume ratio when fabricated into suspended optomechanical nanobeams are studied. Thermal transport elucidate relative impact different grain size distributions geometrical dimensions...

Abstract Nanocrystalline materials exhibit properties that can differ substantially from those of their single crystal counterparts. As such, they provide ways to enhance and optimize functionality for devices applications. Here, we report on the optical, mechanical thermal nanocrystalline silicon probed by means optomechanical nanobeams extract information dynamics optical absorption, losses, heat generation dissipation. The are fabricated using films prepared annealing amorphous layers at...

A special ion trap was initially built up to perform β-ν correlation experiments with radioactive ions. The geometry is also well suited laser-cooled ions, serving for the development of a new type Penning trap, in framework project TRAPSENSOR at University Granada. goal this use single (40)Ca(+) as detector single-ion mass spectrometry. Within and without any modification initial electrode configuration, it possible Doppler cooling on starting from large clouds reaching sensitivity. This...

Abstract Locking of oscillators to ultra-stable external sources is paramount importance for improving close-to-carrier phase noise in free running oscillators. In most them, such as Micro-Electro-Mechanical-Systems or LC circuit-based oscillators, the locking frequency range limited by robustness their natural frequency, which comes explicitly related with intrinsic parameters system. this work we report synchronization an optically-driven self-pulsing limit-cycle taking place a silicon...

Artificial photonic materials, nanofabricated through wavelength-scale engineering, have shown astounding and promising results in harnessing, tuning shaping beams. Metamaterials proven to be often outperforming the natural materials they take inspiration from. In particular, metallic chiral metasurfaces demonstrated large circular linear dichroism of light which can used, for example, probing different enantiomers biological molecules. Moreover, precise control, designs on demand, output...

We report on a novel and efficient strategy that can drive mechanical mode into the lasing regime by exploiting radiation pressure force in optomechanical (OM) cavities. The pumping mechanism is based self-pulsing limit-cycle, which spontaneous process modulates intracavity resonance with eigenmode of OM cavity.

Glass microspheres are of great interest for numerous industrial, biomedical, or standalone applications, but it remains challenging to evaluate their elastic and optical properties in a non-destructive way. In this work, we address issue by using two complementary contactless techniques obtain constants glass with diameters ranging from 10 60 µm. The first technique employ is Brillouin Light Scattering, which yields scattering longitudinal acoustic phonons, the frequency found be 5% lower...

We explore new methods for coupling light to on-chip gallium arsenide nanophotonic structures using etched conical optical fibers. With a single-sided fiber taper, we demonstrate efficient an photonic bus waveguide in liquid environment. then show that it is possible replace such by two joined fibers order directly couple into target whispering gallery disk resonator. This latter approach proves compliant with demanding environments, as vibrating pulse tube cryostat operating at low...

Nanocrystalline materials exhibit properties that can differ substantially from those of their single crystal counterparts. As such, they provide ways to enhance and optimise functionality for devices applications. Here we report on the optical, mechanical thermal nanocrystalline silicon probed by means optomechanical nanobeams extract information dynamics optical absorption, losses, heat generation dissipation. The are fabricated using films prepared annealing amorphous layers at different...