Laser

Conceptual illustration of a diffractive solar sail.

Hidden physics complicates the dream of launching sailing spacecraft to other stars

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A new theoretical study points to another problem with interstellar light sails: As they approach relativistic speeds, the Doppler effect and the deflection of light reduce the efficiency of the thrust. In one of the weakest contributions of light, even
The curators look after many specimens collected by Charles Darwin, which continue to contribute to scientific research today. Credit: Trustees of the Natural History Museum, London

Scientists solve a 200-year-old museum mystery: What do Darwin's jars contain?

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Laser spectroscopy technology enables non-invasive chemical analysis of preserved Charles Darwin specimens, improving long-term preservation of museum collections
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.
Paved surfaces around a lunar base. An artist's perception. Courtesy of the European Space Agency

How to pave roads on the moon

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With the development of civilization comes roads, and this will be especially true on the moon. To do this, the dust must be kept away. In the Apollo era, dust blocked equipment and worn space suits.
Electron transport in a solid. Courtesy of Prof. Nirit Dudovich, Weizmann Institute

New light on solid state: How fast flashes of light might change the properties of solid matter?

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Chirality. Illustration: Yuval Robicek, for Weizmann Institute Spokesperson

The cutoff limits: how deep is the phenomenon of chirality in molecules?

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Dr. Oren Raz came up with an idea for a new way to circumvent the phase reconstruction problem: to combine two ultra-fast laser flashes and measure them together, so that the combination between the two would act as a hologram

The shape of the flash - how to measure a very fast phenomenon using a much slower detector

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The scientists demonstrated the new method on sulfur oxide molecules consisting of two oxygen atoms and one sulfur atom. These molecules have an axis determined by the oxygen atoms, and perpendicular to it is the sulfur atom. Courtesy of the Weizmann Institute

Molecular order exercises

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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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Much more detail: nanocrystals as they are seen using the microscopy method developed by scientists at the Weizmann Institute of Science (right) and as they are seen under a normal light microscope (left). Scale: 0.5 micron

Things you see in the small

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

Semiconductor lasers: the next generation

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A new X-ray imaging method makes it possible to obtain XNUMXD videos of chemical reactions. Illustration: SLAC National Accelerator Laboratory.

The fastest films capture molecules in motion

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Source: Luc Viatour / Wikimedia.

Medusas for laser

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The new design includes placing the mirrors on both sides of the gallium nitride and placing the electrodes above and below the gallium nitride.

An economical method of creating laser-like beams

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Nanocrystals that convert two low-energy photons into one high-energy photon, under an electron microscope

Energy from red to green

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In a compressed gas system, where all the molecules rotate in one direction

Fast spin

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DE-STAR - A proposal for a system of satellites that will repel or even explode asteroids as they approach the Earth. Image: Philip M. Lubin, University of California at Santa Barbara

Fend off threatening asteroids while still in space using a laser

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From the right: Dr. Dror Shapir, Dr. Nirit Dodovitz, Oren Padhzour, Hadas Yager, Dr. Barry Brunner, Michal Dagan. Faster. Photo: Weizmann Institute

Window of Opportunity

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Prof. David Tenor. In the name of efficiency

between awakening and dissolution

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Reagan announces the launch of the project

Reagan's Fantasy: On the Star Wars Initiative

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Diagram (left) and scanning electron microscope images of nanolasers grown directly on a silicon surface

Preparation of nanolasers attached to silicon

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From the right (standing): Dr. Yevgeny Stambolchik, Prof. Yitzhak Maron, Kristina Stolberg, Guy Rosenzweig, Psy Meiri. (sitting): Dr. Eyal Krupp, Dimitri Mikitchuk

In short - particle accelerators

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Prof. Zeev Zalevsky, Bar-Ilan University

Researchers from Bar Ilan University will reveal at the Nanotech conference a system that picks up conversations, heartbeats and blood pressure - from a distance of hundreds of meters

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Protein crystals, some of which were grown on the American space shuttle and some on the Russian space station.

How do you grow your crystals?

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From left to right: Jingle Liu, Xi-Cheng Zhang, Jianming Dai. Credit: Rensselaer/Daria Robbins

Breakthrough in remote sensing of hidden explosives

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The HEL TD logo

Boeing receives a key component to demonstrate the high-intensity laser technology intended for the US military

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A portable, lightweight electro-optical system for acquiring and marking ground targets. Ground target acquisition & designation system (GTADS). Photo: the aviation industry

The Aerospace Industry unveils an electro-optical system for acquiring and specifying ground targets - GTADS

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Towns and Sholov adjust the maizer. Photo: Bell Laboratories

Laser's 50th birthday

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Do the cores of the giant planets contain diamonds?

Rahab Diamonds

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Two children and a bullet as seen by the glaucoma sufferer. Photo NIH National Eye Institute

I-Optima reports the start of glaucoma surgeries in Israel with a device it developed

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

Spectrometer device with peak sensitivity

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

An advanced laboratory developing innovative cancer treatment using laser beams and gold nanoparticles was inaugurated at the Technion

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

Elbit Systems in a unique presentation at the AUSA exhibition in Washington

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

Using a laser to obtain artificial joints and arterial supports

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

Shorter, faster

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

Guarding the sky

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

The Magnet Committee approved a new association: AFL-Advanced Fiber Lasers

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

The evolution of efficiency

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

The building blocks of the fastest quantum computer have been built

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

Boeing began firing high-energy laser beams from airplanes

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

Laser, lightning and the scientists in between

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

The laser guns are becoming a reality

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Rare supporting cells in the inner ear of mice began to transform into sensory hair cells

Combat systems - the next generation. Part II

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