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Journal ArticleDOI

Photothermal Self-Oscillation and Laser Cooling of Graphene Optomechanical Systems

TLDR
Photothermal back-action in a graphene mechanical resonator comprising one end of a Fabry-Perot cavity is demonstrated and a continuous wave laser can be used to cool a graphene vibrational mode or to power a graphene-based tunable frequency oscillator.
Abstract
By virtue of their low mass and stiffness, atomically thin mechanical resonators are attractive candidates for use in optomechanics. Here, we demonstrate photothermal back-action in a graphene mechanical resonator comprising one end of a Fabry–Perot cavity. As a demonstration of the utility of this effect, we show that a continuous wave laser can be used to cool a graphene vibrational mode or to power a graphene-based tunable frequency oscillator. Owing to graphene’s high thermal conductivity and optical absorption, photothermal optomechanics is efficient in graphene and could ultimately enable laser cooling to the quantum ground state or applications such as photonic signal processing.

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Citations
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Journal ArticleDOI

Optomechanical coupling between a multilayer graphene mechanical resonator and a superconducting microwave cavity

TL;DR: Coupling between a multilayer graphene resonator with quality factors up to 220,000 and a high-Q superconducting cavity is demonstrated and the cooperativity C, a characterization of coupling strength, is quantitatively extracted from the measurement with no free parameters and found, which is promising for the quantum regime of graphene motion.
Journal ArticleDOI

3D Graphene Materials: From Understanding to Design and Synthesis Control.

TL;DR: In this article, a 2D carbon nanotube and 2D graphene material have been used for the first time in the development of material science, and they have played significant roles in our daily life and the development in material science.
Journal ArticleDOI

Optical Third-Harmonic Generation in Graphene

TL;DR: In this paper, strong third-harmonic generation in monolayer graphene grown by chemical vapor deposition (CVD) and transferred to an amorphous silica (glass) substrate was reported.
Journal ArticleDOI

Optical Third-Harmonic Generation in Graphene

TL;DR: In this paper, strong third-harmonic generation in monolayer graphene grown by chemical vapor deposition and transferred to an amorphous silica (glass) substrate is reported, where the photon energy is in threephoton resonance with the exciton-shifted van Hove singularity at the M point of graphene.
Journal ArticleDOI

Dynamical strong coupling and parametric amplification of mechanical modes of graphene drums

TL;DR: This work engineers a graphene resonator with large frequency tunability at low temperatures, resulting in a large intermodal coupling strength, and demonstrates that the dynamical inter modal coupling is tunable.
References
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Journal ArticleDOI

Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene

TL;DR: Graphene is established as the strongest material ever measured, and atomically perfect nanoscale materials can be mechanically tested to deformations well beyond the linear regime.
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Superior Thermal Conductivity of Single-Layer Graphene

TL;DR: The extremely high value of the thermal conductivity suggests that graphene can outperform carbon nanotubes in heat conduction and establishes graphene as an excellent material for thermal management.
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Fine Structure Constant Defines Visual Transparency of Graphene

TL;DR: It is shown that the opacity of suspended graphene is defined solely by the fine structure constant, a = e2/hc � 1/137 (where c is the speed of light), the parameter that describes coupling between light and relativistic electrons and that is traditionally associated with quantum electrodynamics rather than materials science.
Journal ArticleDOI

Electromechanical Resonators from Graphene Sheets

TL;DR: The thinnest resonator consists of a single suspended layer of atoms and represents the ultimate limit of two-dimensional nanoelectromechanical systems and is demonstrated down to 8 × 10–4 electrons per root hertz.
Journal ArticleDOI

Laser cooling of a nanomechanical oscillator into its quantum ground state

TL;DR: In this article, a coupled, nanoscale optical and mechanical resonator formed in a silicon microchip is used to cool the mechanical motion down to its quantum ground state (reaching an average phonon occupancy number of 0.85±0.08).
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Can graphene be frozen?

As a demonstration of the utility of this effect, we show that a continuous wave laser can be used to cool a graphene vibrational mode or to power a graphene-based tunable frequency oscillator.