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Scientists propose and experimentally demonstrate a new architecture for dual-comb spectroscopy based on all-fibre tunable frequency comb sources using standard telecommunication fibre optics components, opening the way for practical dual-comb spectroscopy.
Using a controllably small and local optomechanical perturbation introduced by a focused lithium-ion beam it is now possible to map five modes of a silicon microdisk resonator (Q ≥ 20,000) with high spatial and spectral resolution.
Perovskite crystals are shown to be highly efficient materials for optical refrigeration, supporting cooling of up to 58 K when exposed to laser light.
A metasurface composed of pixels of optically switchable phase change material yields a photonic platform that can be configured on demand to perform a variety of optical tasks.
Scientists demonstrate an experimental method that allows them to locate and track moving targets that are hidden from the direct line of sight, for example, by a wall or an obstacle, with only a few seconds acquisition time and centimetre precision.
Two-photon Rabi oscillations are observed in He on a timescale of 10 fs by utilizing the strong-field phenomenon known as Freeman resonance. The importance of ponderomotive shifts of both the Rydberg states and the ionization limit is highlighted.
Scientists theoretically show infrared to X-ray sources that can be implemented on-chip by scattering high-energy electrons with graphene plasmons and predict that they are capable of producing tunable radiation.
A single photon is deterministically extracted from a light pulse due to the interaction of the pulse with a single 87Rb atom coupled to a nanofibre-coupled microresonator. The extraction mechanism is insensitive to pulse shape and timing.
A 256 × 256 pixel scintillator-based X-ray detector that improves resolution by limiting optical cross-talk is made using terbium-doped gadolinium oxysulfide scintillator particles in an organic photodetector matrix.
A round-robin differential phase shift protocol, in which monitoring of the signal disturbance is unnecessary, has been experimentally realized. With 65 pulses in each packet, the system can distribute a secret key over a distance of 90 km.
Scientists theoretically and experimentally demonstrate that the transformation of spin into orbital momentum can lead to a fundamentally new type of force acting transversally to the direction of propagation.
Scientists demonstrate an optically pumped InP-based distributed feedback laser array monolithically grown on (001)-silicon operating at room temperature that is suitable for wavelength-division multiplexing applications.