Articles tagged with Laser Light
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.
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 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 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 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.
Researchers at Harvard Medical School and Peking University introduce a novel technique for tracking individual cells using omnidirectional visible laser particles. The innovative method reduces orientation-dependent intensity fluctuations, allowing for blinking-free tracking of single cells under complex biological conditions.
Researchers have invented a hands-off probe using high harmonic generation to study topological insulators. The technique shifts laser light through materials, producing strong signals that reveal electron behavior on superhighway edges versus the bulk.
Researchers from Hokkaido University have found that ultraviolet light reacts with nitrophenol to produce atmospheric nitrous acid, a key component of photochemical smog. This decomposition process occurs in real-time and involves the distortion of the nitrophenol molecule's shape under extreme UV light.
Researchers have developed a VUV laser system with a focal spot of <1 μm, enabling high-energy resolution (~0.3 meV) and sub-micron spatial resolution for angle-resolved photoemission spectroscopy (ARPES). This improvement allows for better visualization of electronic structures in novel quantum materials.
Researchers developed a microelectromechanical systems (MEMS) optical scanner that enables better road safety by adjusting the driver's visibility based on speed and traffic environment. The system provides improved visibility, especially for pedestrians, and reduces glare from oncoming vehicles.
Researchers from Far Eastern Federal University and international partners developed ceramic phosphors that can be applied in-ground and aerospace technologies. The new materials produce compact energy-efficient white light-emitting diodes (wLEDs) and high-power systems, with reduced operating temperatures.
Researchers from Utrecht University and TU Wien develop a method to calculate optimal light waves for precise measurement of invisible objects in complicated environments. This technology has potential applications in microbiology, computer chip production, and nanometer-scale imaging.
Scientists at Max Born Institute create new method for generating narrowband XUV laser pulses by employing four-wave mixing scheme. This enables applications in electron spectroscopy, resonant transitions, and coherent diffractive imaging.
Researchers perform an experiment that adds or subtracts a single phonon to a high-frequency sound field using laser light interactions. The team's findings show that subtracting a single phonon increases the average number of quanta, defying intuition. This result opens a new path for quantum science and technology with sound waves.
Researchers at NIST have developed a compact optical platform to cool atoms, enabling the creation of super-accurate atomic clocks and quantum devices. The miniaturized system uses flat optics and a metasurface to efficiently interact with and cool large collections of atoms.
Researchers have used lasers to create bubble microrobots that can form inseparable shapes and control their movement. The robots can manipulate small pieces into interconnected structures with unbreakable connections.
Researchers at KIST achieved a pulsed-laser repetition rate of 57.8 GHz by inserting a graphene resonator into a fiber-optic oscillator. This breakthrough overcomes the MHz-level limit and paves the way for significant increases in data transmission and processing speeds.
Researchers from Skoltech and UTMB have developed an optoacoustic sensor to measure water content in skin, a technique that can monitor swelling or dehydration. The method is safe, non-invasive, and provides high resolution, making it suitable for clinical applications.
A new class of crystalline material called avalanching nanoparticles (ANPs) overcomes the diffraction limit without heavy computation or a super-resolution microscope. ANPs enable real-time high-resolution bioimaging of cells' organelles and proteins, as well as ultrasensitive optical sensors and neuromorphic computing.
Researchers have developed a femtosecond laser with unprecedented precision and stability, allowing for the observation of chemical transformations inside cells and the creation of ultra-thin layers on microchips. The laser's harmonic mode locking system enables precise control over pulse frequencies, opening up new avenues for applica...
A new method of distance measurement has been developed by researchers at Paderborn University, achieving precision 10,000 times better than established methods. This breakthrough could significantly improve applications such as LIDAR and GPS.
Scientists at the University of Tokyo have observed a direct impact of magnetic fields on biological magnetoreception in living cells. By measuring changes in flavin autofluorescence, they found that the presence of a magnetic field reduced the cell's ability to emit light.
Researchers developed a novel endoscopic technique, Linked Color Imaging (LCI), to improve detection of cancer in the upper digestive tract. LCI technology enhances contrast of mucosal changes by combining specific wavelengths of light, detecting neoplastic changes 1.67 times more frequently than conventional White Light Imaging.
Researchers used X-ray laser to directly measure formation of polarons, fleeting distortions that affect material's behavior. The study reveals that polarons form large, expanding bubbles that travel along with electrons, potentially explaining why lead hybrid perovskites achieve high efficiencies in solar cells.
Researchers have developed a new method to enhance the sensitivity of quantitative phase imaging, enabling the observation of tiny particles in living cells without labels or stains. The technique, called ADRIFT-QPI, produces images with seven times greater sensitivity than traditional methods.
Researchers at the University of Pittsburgh took snapshots of light using ultrafast microscopy, stopping it to observe its behavior. They discovered that light vortices can cause transitions in solid state materials, generating topologically distinct materials.
An international team of scientists has developed a novel technique for a high-brightness coherent and few-cycle duration source spanning 7 optical octaves from the UV to the THz. This breakthrough enables future research on time-domain analysis of substances, opening new opportunities for multimodal measurement approaches.
Researchers at Aalto University developed a new way to break the reciprocity law by changing material properties periodically. This breakthrough could lead to efficient nonreciprocal devices, such as compact isolators and circulators, for next-generation communication systems.
Researchers developed a new type of hollow core optical fiber, known as nodeless antiresonant fiber (NANF), to overcome performance limitations in resonator fiber optic gyroscopes. The new gyroscope achieves significant improvements in stability, enabling precise navigation systems for various applications.
Researchers have developed a novel synthetic aperture microscopy method using digital micromirror devices, achieving high spatial resolution and fast imaging speeds. The technique enables the observation of subcellular dynamics and nanometric structures without harming living cells.
Scientists at EPFL demonstrate a state of vibration that exists simultaneously at two different times, showing entanglement between light and vibration. This finding creates a bridge between daily experience and the realm of quantum mechanics, paving the way for ultrafast quantum technologies.
A research team at POSTECH has successfully measured and controlled the phase of second-harmonic generation (SHG) in 2D materials, opening new possibilities for nonlinear spectroscopic control methods. The study uses heterobilayer materials to create light with twice the frequency of vibration and controlled phase.
Researchers at Stevens Institute of Technology have developed a chip-based photon source that's 100 times more efficient than any previous device, allowing the creation of tens of millions of entangled photon pairs per second. The new source uses nanoscale microcavities to create entangled photons with virtually no waste energy.
Researchers at the University of Jena have developed a light-emitting silicon alloy, paving the way for silicon lasers that could revolutionize optical data processing. The alloy's unique crystal structure enhances the probability of efficient photon emission.
Researchers have created a compact, high-brightness mid-IR-driven source combining a gas-filled anti-resonant-ring photonic crystal fiber with a novel nonlinear-crystal. The table top source provides a seven-octave coherent spectrum from 340 nm to 40,000 nm, outshining brightest Synchrotron facilities in spectral brightness.
Researchers have shown that a single layer of graphene can convert light into various colors through nonlinear interactions. The team used nanometer-sized gold ribbons to squeeze light into the graphene, producing strong optical nonlinearities.
Optical tweezers have been extended to trap nanoscale particles by exploiting a particular property of light diffraction at the interface between a glass and a liquid. The device uses 'Arago spots' and 'total internal reflection' to confine particles in a donut-shaped wave, enabling precise manipulation without physical contact.
Researchers at University of Fukui, Japan, create miniature laser-based device to project color HD video on the retina. The compact RGB scanning projector has potential applications in various fields including virtual and augmented reality, conferencing, surveillance, and remote-assisted surgery.
Researchers developed a compact laser-based sensor that accurately senses extremely low concentrations of benzene in real time, outperforming existing devices. The device detects trace benzene levels, including in parking garages and service stations, with higher sensitivity than conventional sensors.
Scientists have made a breakthrough in understanding the ultrafast motion of atoms and electrons, with implications for controlling materials through light. By observing the distortion of molecular structures and electron transfer, researchers can now distinguish between atomic motion and electronic dynamics.
A new laser-based method allows researchers to map the electronic structures of crystals at room temperature, revealing potential capabilities for solar cells, LED lights, and artificial photosynthesis. The technique also enables the design of novel semiconductor-based quantum devices.
The study enables the creation of highly specialized light-focusing abilities, increasing data-routing capability in computer chips and optical systems. The researchers' method will impact the manufacturing of complex optical components and advance personal computing.
Researchers have demonstrated a way to control nanoparticles to lase at low power, producing sharp signals for biosensing and bio-imaging. This breakthrough reduces tissue damage and improves the accuracy of sensing indicators, holding promise for early-stage disease detection.
EPFL researchers demonstrate nonlinear beam cleaning, enabling generation of high-energy, ultrashort pulses with single-mode beam quality. They achieve sub-100 femtosecond pulses with high pulse energy and low M2 value without external amplification in a compact setup.
Researchers at TU Wien have developed a new method to produce short, intense infrared laser pulses using tailor-made quantum cascade lasers. The technology can be easily miniaturized, enabling compact measuring instruments for detecting specific molecules in gas samples.
Researchers at INRS used the Advanced Laser Light Source facility to generate extremely short and intense laser pulses that are highly-stable in time and space. The discovery has significant technological impact, enabling compact high-power laser systems for industrial applications and advanced biomedical imaging.
A novel vertical-cavity surface-emitting laser design has been developed, combining multiple transverse coupled cavities to enhance optical feedback. This innovation extends the temporal bandwidth of VCSELs, enabling a modulation bandwidth of up to 100 GHz, beyond the known limit of relaxation oscillation frequency.
A new optical imaging technology called PANORAMA has been developed to detect and study nanoscale objects as small as 25 nanometers in diameter. This technology uses unscattered light to monitor changes in transmission and determine the target's characteristics, making it possible to view nanoparticles directly without labeling.
Researchers from Kyoto University have created a beam-scanning device using photonic crystals, eliminating the need for moving parts. The technology enables high-power, high-beam-quality two-dimensional beam scanning lasers with improved resolution and accuracy.
Researchers used a state-of-the-art atomic clock to narrow the search for elusive dark matter, setting new limits on ultralight dark matter's coupling strength. The study established constraints on the floor of normal fluctuations, providing sensitivity to cosmological models of dark matter and accepted physics theories.
Scientists at the University of São Paulo have developed a method to generate intense beams of light with quantum correlations, which can be used for high-precision metrology and information encoding. The new technology has potential applications in fields such as gravity wave detection and secure communication.
Researchers at University of Konstanz and Ludwig-Maximilians-Universität München develop a prototypical attosecond electron microscope (A-TEM) that enables visualization of light-matter interactions at attosecond speeds. This breakthrough can facilitate the exploration of atomic origins of light-matter interactions in complex materials...
Researchers from Kyushu University developed a technique that improves the resolution of fluorescence images of living cells using plasmonic metasurfaces. The metasurface, composed of self-assembled gold nanoparticles, enhances the focus of light-emitting molecules, resulting in high-resolution imaging capabilities.
Researchers at UCL have used laser beams to 'switch on' neurons in mice, showing how memories drive the brain's inner GPS system. The study uses an 'all-optical' approach to read and write activity in specific neurons, reactivating memories of a location where rewards were obtained.
Researchers have designed novel linear nanomotors powered by laser light, enabling controlled movement and reducing complexity. The technology uses localized surface plasmon resonance to produce directional scattering, allowing for precise navigation.
Researchers have created a bio-based, water-resistant wood film that can emit and scatter light, offering a sustainable alternative to traditional lighting materials. The luminescent panel demonstrates excellent mechanical properties and can be used as cover panels for lamps, displays, and laser devices.
Scientists create nanoscale silicon resonators for logic gates of light pulses, potentially leading to faster and all-optical computer switches. This breakthrough could bridge the gap between electronic and optical signals in computing.
Researchers at Princeton University create device that excites erbium atoms using laser light, allowing control of multiple atoms without spatial information. This enables study of rich quantum mechanical behavior and entanglement in atoms at tiny distances.
LaserNetUS, a high-power laser consortium including Institut National de la Recherche Scientifique, receives $18 million from the US Department of Energy. The funding will support user support and expand LaserNetUS operations for three years.