Photonics

An adult male dragonfly that is blue. Photo: Tali Lamkof

The Spriters teach how to produce strong colors without polluting pigments

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Ben-Gurion University-led research reveals how spiders produce a saturated blue-green color from imperfect nanoscale structures. The mechanism may aid in the development of sustainable structural dyes
An EPFL chip based on an ultrafast laser operates in a laboratory experiment. The device generates extremely short laser pulses directly on the photonic chip. From the study

Femtosecond laser scaled down to a photonic chip

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An ultrafast laser that once required a large laboratory system has been scaled down to a photonic chip, paving the way for more compact measurement and sensing tools.
Radiation emission resulting from illumination of the material. Credit: Tomer Bar Lev. Created with the assistance of Gemini

Technion researchers have developed a new model for designing smart light sources

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The study, published in Optica, explains how properties of luminescent materials and temperature determine the color, intensity, and randomness of light. The findings could help develop advanced light sources, optical sensors, and heat-based photonic systems.
An artist's impression of a nanorobot (center and inset) interacting with several bacteria of two different types. The dashed arrows indicate the attractive thermophoresis force exerted by the nanorobot on the bacteria in its environment when illuminated. Credit: Jin Chin

Light-driven nanorobots successfully detect and collect bacteria

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Researchers from the University of Würzburg have developed tiny robots, smaller than one micrometer, that are propelled by photon repulsion and capable of manipulating bacteria in a liquid environment.
A tiny photonic device printed directly onto a VCSEL laser chip and concentrates dozens of light sources onto a single optical fiber.

Hebrew University researchers have developed a tiny device that concentrates dozens of VCSEL lasers into a single optical fiber

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A 3D-printed photonic device, developed in collaboration with Civan Lasers and published in Nature Communications, demonstrated coupling of up to 37 multimode lasers into a single fiber with low loss and an extremely compact structure.
Optical communication. Illustration: depositphotos.com

The computer of the next century: This is how we imagined the photonic revolution in 1997, and what has really happened since then

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A historical article by Avi Blizovsky from 1997 about optical computers, in a restored and updated version, with a look back at the place of photonics in modern computing.

Universal quantum coupler from Tel Aviv University could reduce the cost of a photonic quantum computer tenfold

Tel Aviv University's Quantum Pulse Ventures presents a universal quantum coupler for photonic quantum computing, which reduces error rates and hardware requirements – and could enable the construction of quantum computers for about 100 million
A green laboratory, two scientists researching optics, wearing lab coats with complex, computerized equipment.

Strong light and attoseconds: revolutionizing material properties using laser beams

Prof. Nirit Dudovich's lab reveals how strong light rapidly changes the properties of matter, breaking new ground for ultra-fast computing and communication capabilities.
A star cluster forms in a giant molecular cloud as reproduced by the simulation in the model. The picture is based on the model. The blue dots represent individual stars. Dark and light colors indicate the temperature of the gas (cold and hot). Visualization by Takaki Takeda (VASA ENTERTAINMENT INC.)

"Medium and powerful: medium-mass black holes can survive in globular clusters"

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First-ever model simulations of individual stars in a star cluster in the process of formation suggest possible mechanisms for the formation of intermediate-mass black holes
Smart window - transparent mode. Ben Gurion University photo

A new method for preparing a photonic metamaterial from liquid crystals used for the production of smart windows

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The optical system in the laboratory - a collaboration between the Technion and CREOL. Source: Technion spokesmen.

Semiconductor lasers: the next generation

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Dr. Rajes Menon. Photo: University of Utah

An invisibility cloak will hide optical chips

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New fiber optic technology. Image: Penn State University

Photonics - the tricks of nature's color / Philip Ball

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Researchers at Georgia Tech are preparing rubidium for the Rydberg state - to release photons for quantum computing. Photo: Georgia Tech University

Efficient production of discrete photons for quantum computing

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