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Current Laser News and Events, Laser News Articles.
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No losses: Scientists stuff graphene with light
Physicists from MIPT and Vladimir State University, Russia, have achieved a nearly 90% efficiency converting light energy into surface waves on graphene. They relied on a laser-like energy conversion scheme and collective resonances. (2020-11-16)

Understanding astrophysics with laser-accelerated protons
Bringing huge amounts of protons up to speed in the shortest distance in fractions of a second -- that's what laser acceleration technology, greatly improved in recent years, can do. An international research team from the GSI Helmholtzzentrum für Schwerionenforschung and the Helmholtz Institute Jena, a branch of GSI, in collaboration with the Lawrence Livermore National Laboratory, USA, has succeeded in using protons accelerated with the GSI high-power laser PHELIX to split other nuclei and to analyze them. (2020-11-16)

Sensors get a laser shape up
Laser writing breathes life into high-performance sensing platforms. (2020-11-15)

Order from chaos
Engineers from Kyoto Universityg have developed a new beam scanning device utilizing photonic crystals, eliminating the use of mechanical mirrors. The team found that modulating the shape and position of the lattice allows the laser beam to be emitted in a unique direction, opening the door for compact multi-directional beam scanner technology. (2020-11-13)

Time for a new state of matter in high-temperature superconductors
Scientists from Universität Hamburg have pointed out how to create a time crystal in an intriguing class of materials, the high-temperature superconductors. They propose to drive these superconducting materials into a time crystalline state by inducing Higgs excitations via light. The work is reported in the journal Physical Review Research. (2020-11-12)

Research produces intense light beams with quantum correlations
Potential applications of research conducted at the University of São Paulo include high-precision metrology and information encoding. (2020-11-12)

Scientists can now scoop contents of individual cells from their local environment
The new tool combines cell microscopy with the single-cell DNA and protein sequencing technology to enable connecting important information about the cell's physical features and its local environment to its molecular makeup. (2020-11-11)

Dissecting colloidal glasses using laser as a lancet
IBS researchers in South Korea probe the cage formation of the glass at surgical precision and elucidate the onset of glass transition. (2020-11-11)

Graphene controls laser frequency combs in fiber
Tuning laser frequency combs electrically can enrich diversity of comb outputs and help to stabilize them actively. By using a graphene heterogeneous fiber microcavity, researchers recently achieve such electrically tunable laser microcombs in-situ. In this implementation, graphene heterostructure was utilized as saturable absorber, temperature controller and dynamic feedback receiver simultaneously. Hence, rich frequency combs with span over half an octave, repetition 10GHz~80GHz, and phase noise down to -130 dBc/Hz@10kHz are generated. (2020-11-11)

Attosecond boost for electron microscopy
A team of physicists from the University of Konstanz and Ludwig-Maximilians-Universität München in Germany have achieved attosecond time resolution in a transmission electron microscope by combining it with a continuous-wave laser -- new insights into light-matter interactions. (2020-11-11)

Using light to reprogramme the brain's GPS
Neuroscientists at UCL have used laser beams to ''switch on'' neurons in mice, providing new insight into the hidden workings of memory and showing how memories underpin the brain's inner GPS system. (2020-11-06)

Laser-powered nanomotors chart their own course
The University of Tokyo introduced a system of gold nanorods that acts like a tiny light-driven motor, with its direction of motion is determined by the orientation of the motors. This work may lead to smaller and more precise nanomachines. (2020-11-04)

100,000-fold enhancement in the nonlinearity of Si
Scientists at Osaka University show how to achieve a very strong nonlinear optical response in silicon nanostructures based on the photothermal effect. This work may lead to entirely optical control of logic gates in computers. (2020-11-03)

Researchers develop a high-power, portable terahertz laser
Researchers at MIT and the University of Waterloo have developed a high-power, portable version of a device called a quantum cascade laser, which can generate terahertz radiation outside of a laboratory setting. The laser could potentially be used in applications such as pinpointing skin cancer and detecting hidden explosives. (2020-11-02)

Tunable THz radiation from 3D topological insulator
Wu's research group has been investigating a three-dimensional topological insulator of bismuth telluride (Bi2Te3) as a promising basis for an effective THz system. They recently systematically investigated THz radiation from Bi2Te3 nanofilms driven by femtosecond laser pulses. (2020-11-02)

Aerosol microdroplets inefficient carriers of COVID-19 virus
Aerosol microdroplets do not appear to be extremely efficient at spreading the virus that leads to COVID-19. While the lingering microdroplets are certainly not risk-free, due to their small size they contain less virus than the larger droplets that are produced when someone coughs, speaks, or sneezes directly on us, said researchers at the University of Amsterdam's Van der Waals-Zeeman Institute. The results were published in Physics of Fluids. (2020-10-27)

Coating implants with 'artificial bone' to prevent inflammation
Bone disease is becoming increasingly prevalence in modern society due to population aging among other factors, and the use of dental and orthopedic implants to treat bone disease has been on the rise. To mitigate slow integration into the bone, Korean research team have developed a ceramic artificial bone coating with triple the adhesion strength compared to conventional coating materials. (2020-10-23)

Not all cats are grey in the dark!
Using two mode-locked femtosecond lasers and a single photon counting detector, scientists have recorded broad spectra with close to one hundred thousand colors in almost complete darkness. (2020-10-23)

QCLs exhibit extreme pulses
Based on a quantum cascade laser (QCL) emitting mid-infrared light, the researchers developed a basic optical neuron system operating 10,000× faster than biological neurons. Their report is published in Advanced Photonics. (2020-10-23)

Optical wiring for large quantum computers
Researchers at ETH have demonstrated a new technique for carrying out sensitive quantum operations on atoms. In this technique, the control laser light is delivered directly inside a chip. This should make it possible to build large-scale quantum computers based on trapped atoms. (2020-10-22)

FEFU scientists helped design a new type of ceramics for laser applications
Material scientists from Far Eastern Federal University (FEFU) joined an international team of researchers to develop new nanocomposite ceramics (Ho3+:Y2O3-MgO) that can be employed in high-capacity laser systems operating in the medium infrared range (IR) of 2-6 micrometers. These lasers are safe for the human vision and have multiple applications in various fields of economy, including industry, atmosphere probing, medicine, and light radars. An article about the work was published in the Ceramics International. (2020-10-22)

Zeptoseconds: new world record in short time measurement
In the global race to measure ever shorter time spans, physicists from Goethe University Frankfurt have now taken the lead: together with colleagues at the accelerator facility DESY in Hamburg and the Fritz-Haber-Institute in Berlin, they have measured a process that lies within the realm of zeptoseconds for the first time: the propagation of light within a molecule. A zeptosecond is a trillionth of a billionth of a second (10 exp -21 seconds). (2020-10-16)

A flash of light to identify tumors: the results of the VIBRA project of the Politecnico di Milano
The VIBRA project, ''Very fast Imaging by Broadband coherent Raman'', has just ended at the Politecnico di Milano. Funded by the prestigious European Research Council of the European Community and lasted 5 years (2015-2020), it led to the development of a new revolutionary optical microscope in the biological and biomedical fields. (2020-10-16)

Laser technology measures biomass in world's largest trees
Laser technology has been used to measure the volume and biomass of giant Californian redwood trees for the first time, records a new study by UCL researchers. (2020-10-15)

Inexpensive and rapid testing of drugs for resistant infections possible
A rapid and simple method for testing the efficacy of antibacterial drugs on infectious microbes has been developed and validated by a team of Penn State researchers. (2020-10-15)

A new ultrafast control scheme of ferromagnet for energy-efficient data storage
Using a single laser pulse that did not switch the ferrimagnetic layer, researchers demonstrated a much faster and less energy consuming switching of the ferromagnet. (2020-10-15)

An innovative method to tune lasers toward infrared wavelengths
Researchers at Institut national de la recherche scientifique (INRS) have discovered a cost-effective way to tune the spectrum of a laser to the infrared, a band of great interest for many laser applications. They collaborated with Austrian and Russian research teams to develop this innovation, which is now the subject of a patent application. The results of their work were recently published in Optica, the flagship journal of the Optical Society (OSA). (2020-10-14)

What laser color do you like?
Researchers at the National Institute of Standards and Technology (NIST) and the University of Maryland have developed a microchip technology that can convert invisible near-infrared laser light into any one of a panoply of visible laser colors, including red, orange, yellow and green. Their work provides a new approach to generating laser light on integrated microchips. (2020-10-14)

MHz, multi-beams coherent XUV source by intracavity high-order harmonic generation
We demonstrate a novel method of realizing a MHz repetition-rate coherent extreme ultraviolet (XUV) light source by utilizing intracavity high-order harmonic generation (HHG) in a mode-locked oscillator. We have successfully implemented HHG by introducing two different rare gases into two separate foci and picking up each HH beam. This XUV light source will open a new route to perform a time-resolved measurement with an XUV-pump and XUV-probe scheme at a MHz repetition, femtosecond resolution. (2020-10-12)

Revealing the reason behind jet formation at the tip of laser optical fiber
When an optical fiber is immersed in liquid, a high temperature, high speed jet is discharged. Researchers expect this to be applied to medical treatment in the future. Now, a research team from Russia and Japan has explored this phenomenon further and revealed the reasons behind the jet formation. (2020-10-12)

Finding the right colour to control magnets with laser pulses
Scientists have discovered a new way to manipulate magnets with laser light pulses shorter than a trillionth of a second. The international team of researchers, led by Lancaster and Radboud Universities, also identified the light wavelength or colour which enables the most efficient manipulation. The finding is published in Physical Review Letters. (2020-10-12)

Ultrafast fiber laser produces record high power
Researchers have developed an ultrafast fiber laser that delivers an average power more than ten times what is available from today's high-power lasers. The technology is poised to improve industrial-scale materials processing and paves the way for visionary applications. (2020-10-12)

Graphene microbubbles make perfect lenses
Jia and fellow researchers from Swinburne University of Technology recently teamed up with researchers from National University of Singapore, Rutgers University, University of Melbourne, and Monash University, to develop a method to generate precisely controlled graphene microbubbles on a glass surface using laser pulses. (2020-10-09)

INRS researchers design the world's fastest UV camera
The team of Professor Jinyang Liang, a specialist in ultrafast imaging at the Institut national de la recherche scientifique (INRS), in collaboration with an international team of researchers, has developed the fastest camera in the world capable of recording photons in the ultraviolet (UV) range in real time. This original research is featured on the front cover of the 10th issue of the journal Laser & Photonics Reviews. (2020-10-08)

RUDN University scientist suggested a simple model of dense plasma spectral properties
A scientist from RUDN University suggested a new physical model to describe the optical properties of dense plasma. The model was tested on available experimental data and does not require complex calculations. (2020-10-08)

New measurements of the solar spectrum verify Einstein's theory of General Relativity
An international team of researchers led by the Instituto de Astrofísica de Canarias (IAC) has measured, with unprecedented accuracy, the gravitational redshift of the Sun, a change in frequency of the lines in the solar spectrum which is produced when the light escapes from the gravitational field of the Sun on its way to Earth. (2020-10-08)

Light stimulation makes bones heavier
Tokyo Medical and Dental University (TMDU) researchers showed that laser ablation of bone inhibits expression of the osteogenesis inhibitor protein sclerostin without causing inflammation, unlike the conventional bur-drilling technique. Further investigations confirmed that this beneficial bio-stimulation works by inducing mechanical stress. These findings help advance research into the treatment of osteoporosis as well as specific enhancement of bone regrowth in orthopedic and dental surgery. (2020-10-08)

Nanoscale machines convert light into work
Researchers have developed a tiny new machine that converts laser light into work. These optically powered machines self-assemble and could be used for nanoscale manipulation of tiny cargo for applications such as nanofluidics and particle sorting. (2020-10-08)

Polarimetric parity-time-symmetric photonic system
Parity-time symmetry (PT), rooting in quantum field theory, are now shining in photonic systems. The implementation of PT symmetry usually requires spatially separated resonators to balance gain and loss between modes. Towards a more compact and economic way to realize PT symmetry, scientists invented a technique to manipulate light coupling with polarization diversity in a single fiber loop. The technique opens new avenues for the implementation of non-Hermitian photonic systems with increased functionalities. (2020-10-08)

Could megatesla magnetic fields be realized on Earth?
A team of researchers led by Osaka University discovered a novel mechanism called a ''microtube implosion,'' demonstrating the generation of megatesla-order magnetic fields, which is three orders of magnitude higher than those ever experimentally achieved. The underlying physics was revealed by particle simulations using a supercomputer. Their promising findings will open new frontiers in many branches of fundamental physics and applications involving ultrahigh magnetic fields. (2020-10-06)

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