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Physics World Optics & Photonics Briefing 2020

Physics World Optics & Photonics Briefing 2020

Inside this free-to-read Optics & Photonics Briefing we find out about the interdisciplinary research around optical metamaterials, which are thinner and lighter than traditional lenses. They are being used in a variety of ways: to banish chromatic aberration, filter out undesirable wavelengths, dynamically change the profile of a laser beam, and undercut the diffraction limit. Other articles focus on exciting cross-disciplinary developments in the field of quantum optics. We also talk to a company that uses lasers to create microscopic marks inside gem-quality diamonds and other transparent materials. Elsewhere, researchers are using hollow-core photonic crystal fibres for monitoring air pollution.

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VCSEL2 research update

Metasurfaces help shape laser beams

9rHqVUGQ research update

Wide-band-gap semiconductors could harvest sunlight underwater

phoamtonics research update

3D foams could control light

Artist's impression of unusual light wave propagation patterns in 2D materials research update

‘Twistronics for photons’ brings tunable diffraction-free light rays

Optical fibres research update

Diamond defects could boost the range of quantum cryptography

Super-photon research update

Light forks one way in a Bose–Einstein condensate

Trapped object research update

Glass sphere is cooled to its motional quantum ground state

3d-camera-credit-stephen-alvey research update

Transparent graphene photodetectors make advanced 3D camera

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