Articles tagged with Laser Physics
A German-Italian team has discovered a way to simplify the experimental implementation of two-dimensional electronic spectroscopy, allowing for real-time study of electron motion in solids. By adding an optical component to Cerullo's interferometer, researchers were able to control laser pulses more precisely, enabling the investigatio...
Researchers used X-ray light to analyze the structure of 2-thiouracil, a substance with medically relevant properties. The study found that UV radiation causes the molecule to bend, resulting in the protrusion of the sulfur atom and making it reactive.
Researchers developed new photon avalanching nanoparticles that exhibit high nonlinearities, overcoming challenges in realizing intrinsic optical bistability at the nanoscale. The breakthrough paves the way for fabricating optical memory and transistors on a nanometer scale comparable to current microelectronics.
A new laser-based device can analyze gas samples with high precision, detecting molecules at minute concentrations. The technology has potential applications in medical diagnostics, tracking greenhouse gas emissions, and more.
Scientists use European X-ray Free Electron Laser to detect axions, which could provide evidence for new physics beyond Standard Model. The experiment sets stage for future searches in milli- to kilo-electron volt mass range.
A new optical technology developed at UC Riverside enables gravitational-wave detectors to reach extreme laser powers, overcoming limitations that hinder the detection of cosmic phenomena. This breakthrough is expected to significantly expand our view of the universe, particularly in the earliest stages of its history.
Researchers have discovered a new way to measure magnetic field orientation using tiny atom-based compasses. The technology has the potential to create precise measurement devices for various applications, including navigation, brain imaging, and medical research.
Goethe University has established a new professorship in experimental physics, solid-state physicist Olena Fedchenko has been appointed to the position. The professorship was made possible by Gisela Eckhardt's €11.5 million bequest.
Researchers are exploring halide perovskites, a material that converts sunlight into energy efficiently. The team created distinct properties using ultra-cool methods, enabling mass production of solar cells.
Researchers used quantum squeezing to improve gas sensing performance of optical frequency comb lasers, doubling the speed of detectors. The technique allowed for more precise measurements with fewer errors, enabling faster detection of molecules like hydrogen sulfide.
The Laboratory for Laser Energetics at the University of Rochester has launched an IFE-STAR ecosystem to develop a clean, safe, and virtually limitless energy source. The initiative aims to accelerate fusion science and technology by building a national network of coordination and collaboration.
Researchers demonstrated a novel mechanism for generating ultrafast spin currents above the Curie temperature in 2D magnetic materials using laser-enhanced proximity effect. This discovery enables the creation of terahertz radiation and opens up new possibilities for spintronics.
Researchers at MIT have created a new magnetic state in an antiferromagnetic material using terahertz laser light, enabling controlled switching and potentially leading to more efficient memory chips. The technique provides a powerful tool for manipulating magnetism and advancing information processing technology.
A new film made from a thorium precursor could replace crystals in atomic clocks, enabling more accurate time measurements. The film requires much less thorium-229 and is about as radioactive as a banana, paving the way for smaller, more portable, and cheaper nuclear clocks.
Researchers from the University of Liverpool and international collaboration measure nuclear radius of nobleium and fermium isotopes using laser spectroscopy. The study reveals smooth trends in charge radii and reduced influence of shell effects at superheavy element levels.
Researchers have found that under certain conditions, a laser beam can act like an opaque object and cast a shadow. The discovery challenges traditional understanding of shadows and opens new possibilities for technologies controlling light.
Nanomechanical resonators have been used to sense minuscule forces and mass changes. The new aluminum nitride resonator achieved a quality factor of over 10 million, opening doors to new possibilities in quantum sensing technologies.
Researchers at UCF are developing a compact semiconductor light source that can disinfect rooms with UV-C light, suitable for defense and civilian use. The laser device aims to last up to 10,000 hours, overcoming its current short lifespan.
Researchers successfully generate guided sound waves on a microchip using lasers, enabling interactions with the environment and paving the way for new sensing technologies. The innovative approach uses special glass to contain sound waves, making it ideal for applications in signal processing and communication technologies.
A new optical time-stretch quantitative interferometry (OTS-QI) system records surface morphology during laser polishing with nanosecond-level temporal resolution. The system achieves remarkable measurement speeds exceeding 100 million times per second while preserving accuracy comparable to existing white light interferometers.
Researchers developed OTS-QI technology to record surface morphology during laser polishing with nanosecond-level temporal resolution. The system achieves high spatial and temporal resolution while measuring surface roughness evolution in real-time.
Scientists developed a technique to engineer LHPs with controlled size distribution of quantum wells, improving efficiency and stability in LEDs and lasers. By controlling nanoplatelets' growth, they achieved excellent energy cascades, enhancing photovoltaic performance and stability.
The researchers combined an NV diamond with a laser diode in an optical resonator, successfully demonstrating the sensor system with two active media. This breakthrough enables high-contrast sensors to measure biomagnetic signals from the brain or heart with improved sensitivity and dynamic range.
Karen Jo Matsler, a UTA professor, is being honored for her extensive contributions to physics education and her efforts to support educators nationwide. Her Quantum for All initiative aims to integrate quantum concepts into high school science instruction, preparing students for careers in quantum technology.
Researchers developed boron nitride nanotubes with spin qubits, more sensitive to off-axis magnetic fields than diamond tips. The technology has applications in quantum sensing, semiconductor industry, and nanoscale MRI.
Thailand's ancient tiered umbrella symbols are crafted using high-powered lasers, preserving intricate beauty in a matter of days. Researchers provide technical details for anyone with necessary equipment to make their own, aiming to conserve arts and culture.
Scientists at Chalmers University of Technology have successfully combined nonlinear and high-index nanophotonics in a single nanoobject, creating a disk-like structure with unique optical properties. The discovery has great potential for developing efficient and compact nonlinear optical devices.
Researchers have achieved data rates of up to 424Gbit/s using plasmonic modulators for free-space optical communication. This technology could provide high-speed, high-capacity data transmission for space missions with lower latency and less interference.
UNLV astrophysicists found evidence suggesting the supermassive black hole at the center of our Milky Way galaxy, Sgr A*, is likely the result of a past cosmic merger. The study utilized data from the Event Horizon Telescope's 2022 observation of Sgr A* to investigate various growth models and demonstrated that the misaligned spin prop...
Researchers at MIT have directly observed edge states in a cloud of ultracold atoms, capturing images of atoms flowing along a boundary without resistance. This discovery could enable super-efficient energy transmission and data transfer in materials.
Physicists at the University of Bonn and Kaiserslautern-Landau created a one-dimensional gas out of light, allowing for the first time to test theoretical predictions about its transition into an exotic state of matter. The method used in the experiment could be used to examine quantum effects.
A new structure of light has been discovered that can accurately measure chirality in molecules, a property of asymmetry important in physics, chemistry, biology, and medicine. This 'chiral vortex' provides an accurate and robust form of measurement, allowing for the detection of chiral biomarkers.
Researchers create stable, multilayer structures using electric field modifications, opening up new possibilities for quantum technologies. The development paves the way for scalable and robust quantum devices with increased functionality.
Scientists have created perovskite crystals with predefined shapes to serve as waveguides, couplers, and modulators in integrated photonic circuits. The edge lasing effect is associated with exciton-polariton condensates, which exhibit nonlinear effects, enabling applications in quantum computing.
Researchers at the University of Arizona developed a transmission electron microscope with attosecond temporal resolution, allowing scientists to observe electron motion in real-time. This breakthrough enables studies of ultrafast processes at the atomic level, paving the way for advancements in physics and chemistry.
Researchers developed a new spectroscopy method using tunable lasers, enabling precise tracking of the laser's color at every point in time. The technique offers higher power and spectral stability compared to existing methods, making it suitable for various applications including LIDAR and spectroscopy.
Researchers have developed a chip-based quantum system that can detect unauthorized access in quantum communication, using entangled four-photon states. This technology has the potential to strengthen data security and protect sensitive information from cyber threats.
The TIFR team developed a method to measure the temporal shape of ultrashort laser pulses using spectral interferometry, enabling precise measurement of pulse profiles at different points across the beam. This breakthrough is essential for handling increasingly powerful lasers that emit pulses and can distort optical components.
Researchers at the University of Bath have discovered a new optical phenomenon called hyper-Raman, which can penetrate deeper into living tissue and yield images with better contrast. This effect has significant potential applications in pharmaceutical science, security, forensics, environmental science, art conservation, and medicine.
Researchers have developed a method to screen human health and its deviations at a population level using infrared spectroscopy and machine learning. The technique can detect multiple health conditions with just one measurement, identifying healthy individuals and complex conditions simultaneously.
Researchers at Max Planck Institute propose a new method for implementing neural networks with optical systems, which could lead to faster and more energy-efficient alternatives. The approach allows for parallel computations in high speeds limited by the speed of light, and can be applied to various physically different systems.
Researchers have discovered that photo-excited YBa2Cu3O6.48 expels a static magnetic field from its interior, comparable to equilibrium superconductivity. This finding suggests that tailored light pulses can be used to synchronize fluctuating states and restore superconducting order at higher temperatures.
Researchers at University of Konstanz shape electron matter wave into left- or right-handed coils of mass and charge. This achievement has implications for fundamental physics and potential applications in quantum optics, particle physics, and electron microscopy.
Scientists at European XFEL have developed a new method to study warm dense matter, allowing for unprecedented insights into its structure and properties. This breakthrough enables the investigation of plasmons in ambient aluminum with ultra-high-resolution X-ray Thomson scattering.
Scientists have successfully embedded a thorium atom within a crystal to raise its energy state using lasers, allowing for precise measurements of time, gravity, and other fields. This breakthrough could unlock the secrets of fundamental constants of nature and test if they vary.
A new photodynamic therapy method has been shown to effectively eradicate ocular melanoma in mice, with the technique delivering two photons and minimizing damage to healthy tissue. The approach offers a promising alternative to current treatments that are often ineffective or invasive.
Researchers at the University of Bonn have demonstrated that photon Bose-Einstein condensates obey a fundamental theorem of physics. By applying gentle and strong perturbations to the condensate, they showed that it responds in the same way as to random fluctuations without a perturbation.
Sean McWilliams' team will study stellar-mass and massive binary inspirals, improving modeling accuracy for the Laser Interferometer Space Antenna (LISA). The project aims to enhance the instrument's science mission by making necessary dramatic improvements in modeling accuracy.
Researchers created a topological quantum simulator device that operates at room temperature, allowing for the study of fundamental nature of matter and light. The device has the potential to support the development of more efficient lasers.
UCF assistant professors Li Fang and Fan Yao have been awarded the 2024 NSF Faculty Early Career Development program award for their research projects. Fang is studying photo-induced ultrafast electron-nuclear dynamics in molecules, while Yao is identifying lapses in computer processing security at the micro level.
Researchers at the University of Gothenburg studied how bubbles form in a drop of biodiesel using femtosecond lasers. The findings aim to improve engine efficiency, reduce emissions, and increase fuel combustion. Understanding bubble formation is crucial for developing more efficient biofuel motors.
Researchers demonstrate novel method of boson sampling using ultracold atoms in a two-dimensional optical lattice, overcoming previous limitations in simulations and photon-based experiments. The achievement showcases the potential of quantum devices for performing non-classical computational tasks.
MIT physicists arrange dysprosium atoms as close as 50 nanometers apart, a limit previously set by the wavelength of light. This allows for enhanced magnetic forces, thermalization, and synchronized oscillations, opening new possibilities for studying quantum phenomena.
Researchers develop laser microscopy technique to analyze pigments in artwork, detecting chemical changes that mark the onset of decay. The technique uses ultra-fast pulses of light to create 3D maps of certain pigments, allowing for nondestructive analysis and early detection of fading.
Physicists have achieved a breakthrough by exciting thorium atomic nuclei with lasers for the first time, enabling precise tracking of their return to original energy states. This discovery has far-reaching implications for precision measurement techniques, including nuclear clocks and fundamental questions in physics.
Researchers at Penn State have made light effectively experience a magnetic field within a photonic crystal structure. This breakthrough could lead to more efficient lasers and other photonic technologies by increasing the interaction between light and matter.
Scientists have developed a novel universal light-based technique to control valley polarization in bulk materials, overcoming previous limitations. The discovery enables the manipulation of valley population without being restricted by specific material properties.
For the first time, scientists have created a system that interfaces two key components of quantum networks: quantum information creation and storage. The team used regular optical fibres to transmit quantum data, enabling long-distance communication and paving the way for distributed computing and secure communication.
Researchers have developed VECSELs with record output power and absolute frequency stability, overcoming the hurdle of spectral differences between glass fibers and quantum bits. These lasers enable low-loss transmission and precise frequency conversion for quantum internet applications.
Researchers introduce new method to store data for generations using atomic-scale defects, exceeding current storage limits and energy consumption. The approach features 4D encoding schemes and can be applied to other materials with optically active defects.