Fewer unknowns in the laser nanosynthesis of composites

by The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Microscopic photo of nanoparticles of one of the composites obtained by laser melting. False colors depict the distribution of oxygen, iron, carbon and silicon according to the key visible in the lower left corner. Credit: IFJ PAN Composite particles with submicron sizes can … Read more

Fibonacci laser blasts atoms to make an ‘extra’ time dimension

By firing a Fibonacci laser pulse at atoms inside a quantum computer, physicists have created a completely new, strange phase of matter that behaves as if it has two dimensions of time. The new phase of matter (opens in new tab)created by using lasers to rhythmically jiggle a strand of 10 ytterbium ions, enables scientists … Read more

Researchers design compact high-power laser using plasma optics

The L3 HAPLS at ELI Beamlines Research Center in the Czech Republic. Credit: ELI Beamlines. Lawrence Livermore National Laboratory (LLNL) researchers have designed a compact multi-petawatt laser that uses plasma transmission gratings to overcome the power limitations of conventional solid-state optical gratings. The design could enable construction of an ultrafast laser up to 1,000 times … Read more

The future of NASA’s laser communications

Illustration of LCRD relaying data from ILLUMA-T on the International Space Station to a ground station on Earth. Credit: NASA’s Goddard Space Flight Center/Dave Ryan NASA uses lasers to send information to and from Earth, employing invisible beams to traverse the skies, sending terabytes of data—pictures and videos—to increase our knowledge of the universe. This … Read more

Russians reportedly building a satellite-blinding laser — an expert explains the technology

A powerful enough laser beam could blind spy satellites. (Image credit: MuthuKutty/Wikimedia, CC BY-SA) This article was originally published at The Conversation. (opens in new tab) The contributed the article to Space.com’s Expert Voices: Op-Ed & Insights. Iain Boyd (opens in new tab)Professor of Aerospace Engineering Sciences, University of Colorado Boulder Russia is building a … Read more

Flexible method for shaping laser beams extends depth-of-focus for OCT imaging

The researchers demonstrated their approach for generating needle-shaped beams by using a needle-shaped beam 300 microns long and 3 microns in diameter to perform OCT imaging of human skin. Their images showed much higher resolution (bottom) than OCT images using a traditional Gaussian-shaped beam. Credit: Jingjing Zhao, Stanford University School of Medicine Researchers have developed … Read more

Breaking the strongest chemical bonds with laser shock compression

Laser-driven shock waves reaching several million atmospheres break the extremely strong triple-bond of nitrogen molecules and free up a fraction of the L-shell electrons of the dissociated atoms. Credit: Liam Krauss/LLNL Lawrence Livermore National Laboratory (LLNL) scientists recently obtained high-precision thermodynamic data on warm dense nitrogen at extreme conditions that could lead to a better … Read more

Physicists make leaps in reading out qubits with laser light

Credit: CC0 Public Domain Qubits are a basic building block for quantum computers, but they’re also notoriously fragile—tricky to observe without erasing their information in the process. Now, new research from the University of Colorado Boulder and the National Institute of Standards and Technology (NIST) could be a leap forward for handling qubits with a … Read more

Emulating impossible ‘unipolar’ laser pulses paves the way for processing quantum information

The semiconductor nanosheets in the water-cooled copper mount turn an infrared laser pulse into an effectively unpolar terahertz pulse. The team says that their terahertz emitter could be made to fit inside a matchbox. Credit: Christian Meineke, Huber Lab, University of Regensburg A laser pulse that sidesteps the inherent symmetry of light waves could manipulate … Read more

Superconducting X-ray laser reaches operating temperature colder than outer space

Credit: SLAC National Accelerator Laboratory Nestled 30 feet underground in Menlo Park, California, a half-mile-long stretch of tunnel is now colder than most of the universe. It houses a new superconducting particle accelerator, part of an upgrade project to the Linac Coherent Light Source (LCLS) X-ray free-electron laser at the Department of Energy’s SLAC National … Read more