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optics

The picture shows an energy band diagram of a micro-resonator based on a GaAs semiconductor as studied in the experiment, in which a quantum condensation of light-matter coupled quasi-particles called exciton-polaritons (exciton-polaritons) - through two-photon absorption. The achievement paves the way for new coherent control schemes and the realization of an efficient laser source in the terahertz (THz) range of electromagnetic radiation

First observation of "two-photon absorption for quantum condensation"

The achievement may accelerate research in new quantum technologies and developments in security, biological sensing, wireless communication and more
The white cells in the shrimp tail. Photo: Ben Gurion University

The shrimp redefines the laws of optics

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The shrimp has a particularly bright white color on its back and limbs that are intended to attract fish, which it 'cleanses' of pests it feeds on. An in-depth examination of the white substance using special electron microscopes revealed that the substance consists of an incredibly thin layer of very dense nanospheres (spheres of very tiny diameter)

For the first time: the experiment of the two cracks in the timeline

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In an article published in the magazine Nature Physics, a team of researchers from Britain, the USA, Germany and Australia demonstrated for the first time the two cracks experiment in the timeline. Instead of spatial dispersion on a screen, the temporal crack created a dispersion in the light spectrum, and from the combination of another crack an interference pattern similar to the spatial pattern from the classic experiment was created. The experiment opens a window for the construction of time-varying optical instruments in a reliable and stable manner.
organic molecules. Illustration: depositphotos.com

Identification of organic compounds using visible light

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Researchers from the University of Santiago in Chile, working in the field of machine learning, have succeeded in developing an innovative method for identifying organic compounds based on the refractive index at a single optical wavelength
Nano optics. Photo: depositphotos.com

Prof. Uriel Levy, Hebrew University: "The material that will replace silicon and make it possible to make transistors even smaller"

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Prof. Levy was one of the speakers at the conference to mark the "Biennial Day of Light" held at Ben Gurion University * In his lecture he presented thin lenses based on materials and showed how surface materials can significantly improve the resolution of microscopes and facilitate the miniaturization of chips
From the research of Prof. Kobi Shuyer and Prof. Pavel Ginzburg, Tel Aviv University

The latest technology to eliminate the reflection of light waves from surfaces

CT device. Illustration: depositphotos.com

A leap forward in the efficiency of X-ray devices and CT systems

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A technology developed by researchers at MIT and the Technion is expected to lead to a leap forward in the efficiency of X-ray machines and CT systems and in the speed of their operation. Prof. Ado Kaminer, head of the Robert and Ruth Magid AdQuanta laboratory, is a partner in the study published in Science.
Photograph in motion of a worm. Courtesy of the Technion

Dramatic improvement in the resolutions of static and dynamic photography

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The technology developed by the researchers is based on the innovative SPI (Single-pixel imaging) concept - imaging using a single-pixel sensor. This concept, which enables photography without a camera, has extensive potential in diverse applications such as the development of components in autonomous vehicle alert systems and improving the ability of microscopes to see deep into biological tissues
The structure of the device developed at the Technion and which makes it possible to increase the visual acuity of telescopes without enlarging the lens. Courtesy of Dr. Erez Ribak.

Researchers at the Technion achieved an improvement in the separation capacity of telescopes without increasing the telescope's mirror

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The researchers developed an amplifier - a medium containing atoms that the photon coming from space passes through after the telescope key. The impact of the photon on the atom forces the atom to release a large number of photons identical to the original photon. The improvement in resolution will benefit any telescope, especially for medium-sized telescopes, and in particular for space telescopes
Microscope images of a laser beam with a wavelength of 532 nm advancing through a soap film. Credit: Technion barges

Researchers at the Technion presented for the first time in the world an observation of the branching of light rays

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The blue player A is in the gap because only the goalkeeper of the opposing team is between him and the goal. The dotted line is the "line of distinction" indicating the position of the rearmost defensive player. Source: NielsF, Wikimedia

Things that donors know: Is the human vision system able to recognize a difference in football?

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XNUMXD mapping of mitochondria with the new technology (the color symbolizes the depth dimension - different colors represent different depths) Credit: by courtesy of Nature Methods and authors

The autonomous microscope

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Electron photograph of the pattern of light trapped in a photonic crystal (photograph of the quantum microscope)

A photon and an electron meet inside a photonic crystal

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One of the researchers activates the laser beam as part of the experiments [Courtesy: Wits University]

A device that moves objects using a light beam

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Laser eye surgery, one of the applications of the discoveries of the winners of the 2018 Nobel Prize in Physics. Photo: shutterstock

Nobel Prize in Physics to three researchers for significant breakthroughs in optical physics

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The experimental system: the tiny ball at the end of the rod rotates rapidly near the light source - the horizontal fiber visible in the background. Light coming from the right side of the fiber is transmitted, while light coming from the left is blocked. Below: the motor that rotates the ball.

A new optical isolator transmits light entering it from one direction and blocks light entering from the opposite direction

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An array of optical skyrmions. The electric field in each cell in the array is not uniform in its direction but points in every possible direction in space. Illustration: The Technion

Nanometric "hedgehogs of light" that pave the way for new applications in information processing, transmission and storage

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'Peacock Jumper'. Source: Jurgen Otto.

Colorful jump

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Prof. John Pendry in the Porter building at Tel Aviv University. Photo courtesy of the British Embassy

Breaking the light: from the disguise of the maidens to something more practical and important - an optical switch

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From left to right: astronomical photons are emitted from the star, pass through the lens and reach an amplifier containing atoms. An atom hit by an astronomical photon in response emits a large amount of forced photons (in green), which hit the telescope detector and "report" with high precision the direction of impact of the original (astronomical) photon. Most of the spontaneous photons (in red) scatter to the sides and are not absorbed by the detector; Therefore, the noise is low and the separation is not significantly impaired.

A method developed in collaboration with researchers at the Technion is expected to bring about a dramatic improvement in the separation ability of telescopes

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Schematic demonstration of different light beams, with angular momentum, emanating from nanoantenna arrays.

The photonic radar

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Light and sound. Illustration: shutterstock

Using light to create sound

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Schematic description of an atomic force microscope - a tiny detector the thickness of a needle tip scans the surface of the sample that is on a moving substrate.

A microscope that produces videos of nanoscale processes

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Viruses try to penetrate the body and challenge the immune system. Illustration: shutterstock

A method has been developed that will allow for the first time to see how viruses are created

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optical communication. Illustration: shutterstock

Researchers managed to extract a single photon from a flash of light

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