Articles tagged with Laser Light
Scientists at St Petersburg University have developed a new organic compound that can 'switch' its biological activity on demand under exposure to light, increasing precision and safety in affecting human body cells. The phosphonate can be used in various medical spheres, including ophthalmology and neurodegenerative diseases.
A team of researchers at EPFL and Purdue University has developed a magnetic-free optical isolator using integrated photonics and micro-electromechanical systems. This device can couple to and deflect light propagating in a waveguide, mimicking the effects of magnet-driven isolators without requiring magnetic fields.
Scientists have designed a compact photonic circuit that uses sound waves to control light, outperforming previous alternatives and optimizing compatibility with atom-based sensors. The new device is simple in design, uses common optical materials, and can be adapted for different wavelengths of light.
A new instrument at the Advanced Light Source enables simultaneous measurement of crystal structure and optical properties during perovskite synthesis. This allows for real-time monitoring of material quality and performance, leading to potentially more efficient solar cells.
Researchers have demonstrated ultrafast optical circuit switching for datacenters using integrated soliton microcombs, which can handle increasing bursty datacenter applications while reducing overheads. The proposed architecture employs a central comb system to improve power efficiency and reduce complexity.
Scientists harness light to alter solid properties and create new applications for high-speed information processing, lossless energy transfer, and quantum technologies. The team reviews the latest developments in ultrafast materials science and explores unifying themes for controlling materials with light.
A team at Tampere University has created a metamaterial eENZ mirror that can control the correlation properties of light, switching between high and low correlation states. By manipulating polarization, they achieve near-perfect coherence switching.
The Quantum Sensors project aims to create ultrasensitive gyroscopes and accelerometers using quantum states, enabling precise measurements for self-driving cars and spacecraft. This technology could capture information not provided by GPS, improving navigation and stability in various environments.
Electrical engineers at Duke University have discovered a way to extend the use of chalcogenide glasses into the visible and ultraviolet parts of the electromagnetic spectrum. By nanostructuring these materials, they can create high-order harmonic frequencies that enable transmission of light at previously inaccessible wavelengths.
A team of scientists has developed a new X-ray measurement method that can analyze the chemical properties of warm dense matter, a state found in planetary interiors. The method uses the strongest X-ray laser to probe carbon's bonding states, providing new insights into planetary formation and potential applications in materials science.
Researchers at JILA have enhanced the sensitivity of their decade-old frequency comb breathalyzer to detect four biomarkers of disease in human breath. The upgraded system can also identify six additional chemicals, with potential implications for COVID-19 testing and real-time health monitoring.
A team at HZB and PTB developed a method to measure the lateral expansion of the electron beam in laser plasma accelerators, achieving resolutions in the micrometre range. This technique uses coherent radiation of electron pulses via interference patterns to determine the beam cross-section.
Researchers developed a non-toxic, small-molecule probe that provides real-time visualization of disease progression, overcoming limitations of MRI and PET imaging. The probe binds copper ions and detects dysregulated levels, accurately identifying Wilson's disease and other maladies.
Scientists from Skoltech and the University of Southampton created an all-optical lattice that houses polaritons, quasiparticles with half-light and half-matter properties. They demonstrated breakthrough results for condensed matter physics and flatband engineering.
Colloidal quantum dot technology enables infrared lasing at room temperature, paving the way for low-cost solution-processed and CMOS integrated lasing sources. The breakthrough discovery may facilitate fully integrated silicon photonics, enabling lower power consumption, higher data rates, and multi-spectral 3D imaging capabilities.
Researchers at the University of Würzburg have developed a way to force an array of vertical cavity lasers to act together as a single laser, overcoming previous power limit constraints. This breakthrough enables the creation of highly efficient and compact laser networks with numerous potential applications.
Researchers at RIT have developed a new method for detecting superfluid motion that is minimally destructive, in situ, and in real-time. The technique uses laser light to detect the frequency of superfluid rotation, enabling scientists to study superfluids without disrupting their motion.
A new optical switch created by an international team could replace electronic transistors in computers, manipulating photons instead of electrons. The device requires no cooling and is fast, with operations per second between 100 and 1,000 times faster than current commercial transistors.
Researchers at Chalmers University of Technology have developed a unique optical amplifier that offers high performance, is compact enough to integrate into a chip just millimeters in size, and does not generate excess noise. This breakthrough technology has the potential to revolutionize both space and fiber communication.
A lidar mapping study of ancient Teotihuacan shows that the city's engineers reshaped the landscape for construction, rerouted rivers to align with astronomical significance, and identified hundreds of previously unknown architectural features. The study confirms how these modifications continue to influence modern activities in the area.
Researchers have developed a new approach to generating terahertz radiation, which can be directly generated on an electronic chip. This breakthrough enables the use of terahertz radiation in various applications, including materials science and communications technology.
Scientists designed loss in optical devices to achieve unconventional physical phenomena, leading to novel methods for optical control and engineering. The team created two whispering gallery mode microresonators with different absorption losses, coupling their fields to achieve coherent perfect absorption.
Researchers at the University of Konstanz have discovered that MXenes can be switched repeatedly between a flat and a rippled shape by applying femtosecond laser pulses. This discovery could lead to improved energy storage capacity, enhanced catalytic or antibiotic activity, and new applications in sensing and active plasmonic devices.
Researchers from DTU develop Fano laser, harnessing bound-state-in-the-continuum to improve coherence. This advancement enables ultrafast and low-noise nanolasers for high-speed computing and integrated photonics.
Researchers from Paderborn University create a simple integrated quantum network using thin layers of lithium niobate to demonstrate large-scale functionalities. The project aims to develop scalable quantum components with industrial application potential.
Researchers directly observe hydrogen bonds in water for the first time, revealing effects that could explain water's strange properties and inform life on Earth. The study uses SLAC's MeV-UED to detect subtle molecular movements, providing a new window into understanding water's role in chemical and biological processes.
Researchers have discovered a way to induce magnetic waves in antiferromagnets using ultrafast laser pulses, potentially leading to faster and more efficient data storage. This technology could endow materials with new functionalities for energy-efficient and ultrafast data storage applications.
Researchers have directly measured the interaction between an ultraviolet laser and a relativistic electron beam in a dipole magnet. The study shows that energy modulation of the electron beam can be effectively tailored, leading to precise bends in the pathway and improved FEL pulse properties.
A POSTECH research team has developed an encrypted hologram printing platform that works in both natural light and laser light using the metasurface technology. The device can produce a holographic color image retaining specific polarization, setting it apart from previously reported holograms.
Researchers at GIST develop a non-contact, nondestructive approach to characterize crystal structures in thin films, shedding light on surface symmetries in SrRuO3. The technique offers a platform for structural characterization of surfaces and interfaces using optical techniques.
A University at Buffalo-led study found that photobiomodulation therapy sped up recovery from burns and reduced inflammation in mice by activating endogenous TGF‐beta 1, a protein controlling cell growth and division. The findings may improve therapeutic treatments for burn injuries worldwide.
Exciton-polaritons exhibit non-linear effects, including Bose-Einstein condensation and polariton lasing without occupation inversion. The study reveals energy-degenerate parametric scattering of polaritons and opens up new avenues for research on multi-level polariton systems.
Researchers at Waseda University have developed a novel mechanism for inducing high-speed bending in thick crystals using the photothermal effect, enabling rapid actuation and simulation. This breakthrough has significant implications for flexible robotics, actuators, and soft robotics.
Researchers at UVA's Charles L. Brown Department of Electrical and Computer Engineering are working on a project called PATRONUS, which aims to integrate photonic integrated circuits into a single chip. This could lead to faster data centers and next-generation wireless communication systems.
A research team has developed a new concept to study astrophysical processes in the laboratory using laser pincers. By creating an antimatter jet and accelerating it efficiently, scientists can simulate extreme conditions found near neutron stars.
Researchers at the University of California, Irvine have created a new type of camera technology that can visualize various materials and structures with detailed chemical information. The technology uses nonlinear optical effects in silicon to capture depth-resolved images on a camera in one shot, allowing for faster inspection of obj...
Researchers at the University of Innsbruck have discovered a mechanism for creating negative ions in interstellar environments. The team used an ion trap to study the formation of chemical compounds, finding that weakly bound states enhance the attachment of free electrons to linear molecules.
Researchers at the University of Strathclyde have developed a new method to produce coherent radiation using a short undulator and attosecond duration electron bunches. This approach could revolutionize light sources by making them compact, table-top size and capable of producing ultra-short duration pulses of light.
Scientists have found a material, uranium ditelluride (UTe2), that exhibits hallmarks of a topological superconductor, potentially unlocking new ways to build quantum computers. The discovery was made by researchers at the University of Maryland's Quantum Materials Center and colleagues.
Researchers from the University of Vienna and TU Wien have successfully controlled a large glass sphere's motion at the quantum level using control engineering methods. The experiment, published in Nature, demonstrates the potential for combining quantum physics and control engineering to enable more precise experiments.
Scientists at KAIST developed a laser system generating highly interactive quantum particles at room temperature, which can recycle lost energy to achieve lower threshold energy levels. The system exploits parity-time reversal symmetry, allowing energy loss to be used as gain for high-efficiency and low-threshold lasers.
A new imaging technique called DEEP enables researchers to image complex biological systems at high resolution and speeds previously impossible. This breakthrough may lead to new understandings of brain function and other biological processes.
The Bowers lab and EPFL team developed an integrated semiconductor laser and resonator capable of producing soliton microcombs, expanding data transmission capabilities. The technology enables seamless integration with low-loss nonlinear optical micro-resonators, lending itself to commercial-scale production.
A large measurement campaign has started in the Atlantic, using a TROPOS lidar on Cabo Verde to study atmospheric conditions and support the ESA wind satellite Aeolus. The campaign aims to improve weather forecasts and understand cloud and aerosol behavior in the tropics.
Researchers at NIST have upgraded their laser frequency-comb instrument to measure three airborne greenhouse gases: nitrous oxide, carbon dioxide, and water vapor, plus major air pollutants ozone and carbon monoxide. The new system can identify gas signatures by precisely measuring the amounts of light absorbed at each color in the bro...
Researchers propose a new method to control temperature through designing nanoantennas on engraved Si nanopillars, enabling local sensing of glass transitions in amorphous polymers with nanometer spatial resolution. This technology opens unique opportunities for studying the physicochemical properties of nanostructured polymers.
Scientists have developed a new scheme to generate intense XUV pulses using near-infrared lasers, shrinking the need for large laboratory facilities. The setup produces high-intensity XUV pulses with potential applications in attosecond-pump attosecond-probe spectroscopy and nanoscale imaging.
Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences developed a single metasurface that can tune different properties of laser light, including wavelength, without additional optical components. This opens the door for lightweight and efficient optical systems for various applications.
Researchers at the University of Texas at Austin have developed a new version of optical tweezer technology that fixes the problem of overheating, making it easier to study biomolecules and diseases. The breakthrough uses cooled materials and thermophoresis to attract particles, protecting them from damage.
Researchers have found that the polarisation plane of visible light in blazars sometimes rotates, coinciding with repeated gamma ray bursts. The study also described the structure of the inner part of the jets, revealing a fast spine surrounded by a slower sheath with ring condensations.
Researchers at Cornell University have developed a method of magneto-thermal imaging that provides nanoscale and picosecond resolution, previously available only in synchrotron facilities. This innovation enables the study of magnetic properties of materials at unprecedented scales.
Researchers developed a compact cold-atom source with low power consumption that can be used in various quantum technologies. The device features an adjustable design that simplifies optics and improves measurement accuracy.
The new method uses polarization analysis to track changes in the spectrum of light on a nanosecond time scale over the entire color spectrum. By correlating polarization with laser color, researchers can measure spectral changes at high speeds, opening up new possibilities for material studies and astronomical observations.
Researchers from the University of Copenhagen have developed a new technique to store qubits of light at room temperature, a major breakthrough in quantum research. This innovation enables the storage of qubits for milliseconds instead of microseconds, saving power and resources.
Researchers have successfully driven nanoparticles to orbit below light diffraction limit, achieving high orbital rotation speeds of over 1000 r/s and subdiffraction radii of 70 nm. This new mechanism enables efficient spin angular momentum conversion to orbital angular momentum.
University of Rochester researchers produce highly chirped pulses with relatively low-quality equipment, increasing possibilities for high-capacity telecommunication systems and astrophysical calibrations. The new method uses normal dispersion cavities, which are more common and can generate stable pulses despite high energy loss.
A research team from the University of Göttingen uses powerful laser irradiation to study electrical and magnetic properties on surfaces of transparent crystals. They successfully demonstrate control over high harmonic radiation, enabling the investigation of magnetisation at the surface of magnesium oxide.
The University of Ottawa has been awarded four new Canada Research Chairs in artificial intelligence, health, and law. Carole Yauk's research addresses toxicological risk assessment of environmental chemicals, while Emmanuelle Bernheim focuses on improving access to justice for those with mental health issues.
The study reveals the existence of moiré trions, confined electronic excited states that exhibit novel characteristics and differ from conventional trions. Moiré trions can emit single photons, making them a feasible optical source for quantum information technology.
Scientists demonstrate a new technique to sense geophysical events using transoceanic fiber optic cables, offering potential for early warnings of tsunamis and earthquakes. The method measures tiny changes in polarization of transmitted light, enabling monitoring of previously inaccessible ocean depths.