Articles tagged with Laser Light
Researchers developed functional interferometric diffusing wave spectroscopy (fiDWS) to measure brain blood flow and activation noninvasively. The technology uses near-infrared light and has been shown to be faster and more accurate than existing methods, with applications in diagnosing strokes and monitoring brain injuries.
Researchers have discovered new ultra-stable, high-power cavity solitons that combine the advantages of pulse trains generated by pulsed lasers and passive resonators. These hybrid solitons offer a solution for applications requiring both energetic and stable pulses, such as LiDAR.
Scientists have successfully generated a Bose-Einstein Condensate out of exciton-polaritons, enabling the creation of the smallest possible solid-state lasers. This phenomenon holds promise for technological advancements in optoelectronic circuits.
Researchers have demonstrated a record-high laser pulse intensity of over 1023 W/cm2 to study complex interactions between light and matter. This achievement will enable exploration of high-energy cosmic rays and the development of new sources for cancer treatment.
Researchers from St. Petersburg State University and international partners successfully condense liquid light in a semiconductor material, paving the way for new lasers capable of producing qubits. This breakthrough could lead to the development of quantum transistors and significant advancements in computing.
Researchers have discovered a precise way to control individual ions using holographic optical engineering technology. The new technology promises to aid the development of quantum industry-specific hardware and potentially quantum error correction processes.
Researchers at University of Pennsylvania designed supersymmetric microlaser arrays to achieve higher power density and stability, paving the way for more efficient photonic devices. The arrays can collectively emit orders of magnitude higher power than traditional lasers.
A SLAC X-ray laser study reveals the molecular structure changes during charge transfer in N,N'-dimethylpiperazine (DMP) gas molecules. The research team observed how the molecule's atomic scaffolding deforms and redistributes charges, leading to a lopsided response to light.
Researchers at KTH Royal Institute of Technology have developed a transparent composite material made from limonene acrylate, a monomer derived from renewable citrus. The material offers high optical transmittance and low haze, with applications in structural use and potential uses in smart windows and nanotechnology.
Scientists at Texas A&M developed a cellphone extension that detects chemicals, drugs, and biological molecules using fluorescence and Raman spectroscopy. The system's sensitivity is comparable to industrial Raman spectrometers but can be improved with HDR applications.
Researchers from UNIGE used mice to study the complex processing of light by the retina, revealing that both light intensity and its temporal shape influence the signal sent to the brain. The findings, published in Science Advances, may lead to new diagnostic and therapeutic possibilities for eye weaknesses.
Researchers at the University of Central Florida have developed a new method to analyze tire skid marks and identify vehicles involved in crimes. By classifying the chemical profile of tires, forensic scientists can link vehicles to potential crime scenes, providing valuable evidence for investigations.
For the first time, scientists have successfully used transient grating spectroscopy with ultrafast X-rays to explore material properties at the atomic level. This method allows for the observation of individual atoms and selective measurement of specific chemical elements in a mixture of substances.
Researchers at OIST Graduate University have captured the first-ever image of an electron's orbit within an exciton using a revolutionary technique. The image shows the distribution of an electron around a hole inside an exciton, providing new insights into the nature of these fleeting particles.
Researchers at the Fritz Haber Institute have developed a novel method for fast material manipulation using laser pulses, significantly reducing switching times. The technique involves shining light on a semi-metallic crystal to re-organize its internal electronic structure, changing conductivity and allowing for ultrafast control.
A new technique uses a laser to create colorful strokes on metal, offering a way to change or erase colors. The approach creates miniature art with complex meaning through shape and color, as well as microstructures on the surface.
Researchers developed a miniature light-sheet generator that can be implanted into a living animal's brain, enabling high-speed and high-contrast imaging of brain activity. The technology uses nanophotonic technology to create ultrathin silicon-based photonic neural probes that emit multiple addressable thin sheets of light.
Researchers at Los Alamos National Laboratory have created a new technique to measure ultrafast extreme ultraviolet laser pulses. By utilizing photoionization as an optical shutter, they can encode the electric field of the pulse in a visible light signal, allowing for its measurement with a standard camera.
Researchers developed a novel assembly technique to fabricate CQD-assembled microspheres with high thermal stability and efficient light-matter coupling. Single-mode lasing is achieved at temperatures up to 450 K, paving the way for large-scale industrial production.
Researchers have realized a synthetic gauge field in a single optomechanical resonator using multimode interaction. This breakthrough enables precise quantum many-body simulation and control over bosons, with potential applications in topological physics.
Researchers at the University of Bonn have discovered a new phase transition in an optical Bose-Einstein condensate of light particles. The overdamped phase exhibits unique properties that could be used to transmit quantum-encrypted messages between multiple participants.
Physicists at CERN have demonstrated laser cooling of antihydrogen atoms for the first time, producing colder antimatter and enabling new experiments. The temperature of the antihydrogen atoms was reduced, slowing them down and reducing their space in a magnetic bottle.
Researchers from Tomsk Polytechnic University and colleagues have experimentally proven the existence of a two-dimensional curved flux of plasmonic quasiparticles, a plasmonic hook. The flat 2D hook possesses new properties, making it a promising transmitter for high-speed microoptical circuits.
Researchers at Hokkaido University have developed a technique to manipulate nanodiamonds with fluorescent centers using opposing lasers. This breakthrough enables the independent control of resonant and non-resonant nanodiamonds, which can be sorted based on their optical properties.
Researchers found that high-energy laser light ejects electrons from quantum dot atoms, trapping holes and producing waste heat, reducing efficiency. The study uses electron camera technology to observe atomic movements at the nanoscale.
Scientists have developed a new treatment that uses wireless modulation of neurons with X-rays to treat brain disorders. The treatment involves injecting nanoparticles that light up when exposed to X-rays, eliminating the need for invasive brain surgery.
A new technique called time-extended ΦOTDR (TE-OTDR) allows for strain and/or temperature sensing with resolutions on the cm scale over up to 1 km range, enabling cost-effective DOFS in short-range and high-resolution applications.
Researchers have developed a method to create arbitrary dimensional quantum-like classical light directly from a laser, enabling the control of high-dimensional classically entangled states. This breakthrough opens up new possibilities for applications in quantum metrology, error correction, and optical communication.
Researchers discovered a method to modify graphene's shape and properties by exposing it to powerful laser pulses. The process, called optical forging, stiffens the material, increasing its bending stiffness and vibrational frequency. This leads to improved device speed and precision, with record-breaking stiffness achieved.
Researchers from Tokyo Metropolitan University have developed a simplified algorithm to convert freely drawn lines into holograms on standard desktop CPUs. The new method reduces computational cost and power consumption, allowing for real-time conversion of writing into holographic images.
Researchers at the University of Ottawa have debunked the myth that metals are useless in photonics with their findings, recently published in Nature Communications. They demonstrated ultra-high-Q resonances in a metasurface comprised of metal nanoparticles embedded inside a flat glass substrate, showing metals can be useful in photonics.
Researchers found that combining energy sources increases light emission from nanoscale devices, potentially enabling faster computer chips and advanced photocatalysts. The effect is attributed to the enhancement of hot electron generation through anti-Stokes electronic Raman scattering.
Researchers have successfully tracked the ultrafast motion of electrons inside a Xenon atom using synchrotron radiation. By interfering with the coherent light waves, they observed the electron movement at a time scale of femtoseconds, significantly faster than previously thought.
Researchers at the University of São Paulo's Chemistry Institute have successfully controlled enzyme activity using infrared laser irradiation and gold nanoparticles, enhancing lipase biocatalysis by up to 58% compared to nanospheres.
Researchers developed a new intravascular imaging technique, ILSI, which can detect unstable coronary plaques. The technique provides a direct assessment of mechanical stability, allowing for early detection and treatment of high-risk vulnerable plaques.
Researchers at Tufts University created light-activated composite devices that execute precise movements and form complex shapes without wires or energy. The technology enables self-aligning solar cells, soft robots and other smart systems responsive to illumination.
A new class of nanomaterials made from perovskite have improved the efficiency of quantum dots, allowing for brighter displays and more efficient electronics. By analyzing the interactions between bright and dark states, researchers were able to verify energy alignment and make discoveries regarding electron behavior.
A team of MIT researchers has developed a new way to produce holograms almost instantly using deep learning, allowing for real-time hologram generation. The 'tensor holography' method can run on a smartphone and is more efficient than traditional physics-based simulations.
The NIST instrument uses laser light to measure acceleration with higher precision and does not require periodic calibrations. It has the potential to improve inertial navigation in critical systems like military aircraft and satellites.
Researchers successfully demonstrated electroluminescence from a silicon-germanium device, marking a key step towards the development of a silicon-based laser. The achievement could have significant implications for the large-scale use of terahertz radiation in fields such as medical imaging and wireless communication.
A new microcomb technology has been developed by researchers at Chalmers University of Technology, which can generate a wide range of optical frequencies with high precision. This technology has the potential to be used in various applications, including exoplanet discovery and disease diagnosis.
Scientists have successfully created a vector beam with an unprecedented 5 degrees of freedom, exceeding the previously reported 2 DoFs. This breakthrough exploits ray-wave duality in a frequency-degenerate laser to generate a non-separable output that combines periodic number, transverse index, oscillating phase, and astigmatic degree.
Scientists at University of Bath found a way to bind two photons together, creating photon-photon polaritons with predicted masses 1,000+ times lighter than electrons. This discovery has potential applications in terabit and quantum optical communication schemes and precision measurements.
Using spatially structured ultrashort laser pulses, materials can be modified with diverse effects, from marginal refractive index changes to destructive microscale explosions. This technology allows true micron-scale material processing due to extremely short exposure times and low thermal diffusion.
Researchers at UC Berkeley developed a new way to harness light waves, enabling the simultaneous transmission of vast amounts of data. The technology uses twisted laser beams and exploits the property of orbital angular momentum, which offers exponentially greater data capacity.
An international team has shown that a pattern of pulses can be generated in a synchrotron radiation source that combines the advantages of both systems, producing laser-like radiation with high repetition rates. This novel approach could facilitate advances in fields such as materials research and quantum physics.
Scientists discovered that speaking while infected with COVID-19 can spread the virus to others through aerosol droplets. In a study published in Physics of Fluids, researchers found that face-to-face contact increases the risk of transmission.
Scientists have developed a laser-driven soft X-ray source using an antiresonant gas-filled hollow core fibre, achieving a record-breaking 100 kHz-class repetition rate. This breakthrough technology offers a compact, high-flux SXR source suitable for various applications in fundamental and applied sciences.
Researchers have fabricated a tunable metalens made of phase-changing material GSST that can focus light on objects at multiple depths without moving. This enables the creation of miniature optical devices such as heat scopes for drones and ultracompact thermal cameras for cellphones.
Researchers have developed a method to characterize topological phases of light using nonlinear instabilities, offering a simpler way to probe and generate these states. The approach exploits the quantized properties of vortices formed during modulational instability, providing a new tool for identifying different topological phases.
Researchers at Tampere University used AI to predict nonlinear dynamics in optical systems, overcoming computational limitations. The new approach allows for faster and more efficient numerical modeling of devices in telecommunications, manufacturing, and imaging.
A new method, Coherence Tomography with Extreme Ultraviolet Light (XCT), enables non-invasive observation and analysis of tiny structures in semiconductors. The technique uses broadband XUV radiation to generate coherent light with nanometer precision.
Scientists at the University of Cambridge have developed a method to communicate with a cloud of 100,000 nuclear quantum bits and sense their behavior using light and an electron. This technique enables the detection of a single quantum bit in the dense cloud with high precision.
Scientists have successfully determined the strength of exciton-phonon coupling in 2D materials at room temperature, a crucial step towards optimizing their applications. This breakthrough was achieved using a novel method called coherent 2D microscopy, which combines high spatial resolution with femtosecond time resolution.
A Duke University research team has made a major advance toward ditching fiber in fiber optics by capturing visible and infrared light for high-speed wireless internet. The researchers replicated plasmonic speed enhancements on macroscopic devices, achieving speeds of two gigabits per second.
Pitt and CMU researchers create a high-torque light-powered actuator that can compete with electrical and pneumatic systems. By forming a polymer sheet into a curved shape, the bending action happens quickly and generates more torque.
Optical systems can combine light by multiplying wave functions instead of adding them, allowing for the solution of nonlinear problems. The authors suggest guiding system trajectories towards solutions by temporarily changing coupling strengths.
Researchers fabricated large-area periodic lead halide perovskite nanostructures using a space-confined solution growth method. These structures were able to modulate reflection and control light emission angles, enabling low-threshold lasing and realization of lenticular printing laser displays.
Researchers at Columbia University have developed a platform to control layered crystals using light, producing imaging capabilities beyond common limits. The discovery provides insights for optical quantum information processing and aims to solve difficult problems in computing and communications.
Researchers have developed a novel inkjet printing method to fabricate biocompatible polymer microdisk lasers for biosensing. The approach allows for the production of both laser and sensor in an open-air environment, enabling on-site biosensing for health monitoring and disease diagnostics.