Articles tagged with Laser Pulses
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A new study published in Scientific Reports reveals that laser energy deposited into plasma produces two low-energy but high-charge electron beams and a single high-energy beam. The beams can have thousands of times more charge than the high-energy beam, offering a novel source of charged particle beams.
Researchers at Louisiana State University and Lund University have developed a new method to direct short bursts of x-ray light using strong laser pulses. This breakthrough allows for precise control over the properties of the light, including direction and pulse duration.
Researchers at the University of Kansas have observed counterintuitive motion of electrons during experiments, moving from top to bottom layer without being spotted in the middle. This quantum transport efficiency is promising for new materials in solar cells and electronics.
Researchers developed a miniature tripler that generates UV pulses with high efficiency and miniaturization, overcoming previous limitations. The device uses software optimization to achieve a factor of three increase in efficiency.
Researchers at Colorado State University have successfully recreated the extreme conditions found in stars using compact lasers and ultra-short pulses irradiating nanowires. The experiment achieved pressures surpassing those in the center of our sun, opening a path to studying high-energy density physics.
Researchers at FAU successfully control electron pulses using laser delays, exhibiting quantum path interference and opening doors for time-resolved electron microscopy. The discovery could lead to complex electron pulses in the future, revolutionizing surface coherence research.
Researchers have discovered 'spatiotemporal optical vortices,' or STOVs, which are 3-D ring structures generated by high-intensity lasers. These structures have the potential to manipulate particles moving at the speed of light and may be useful for designing powerful microscopes and more efficient telecommunication lines.
High-intensity femtosecond laser pulses can cause DNA breaks and damage, with OH radicals being more likely to produce double strand breaks. The extent of damage can be controlled by varying the focal length of the focusing lens.
A team of physicists at LMU Munich has used laser pulses to selectively remove and reattach hydrogen atoms from a hydrocarbon molecule, opening up new possibilities for chemical synthesis. This technique could lead to the creation of new substances by controlling individual steps in chemical reactions.
The team demonstrated that a laser pulse can accelerate an electron beam and couple it to a second laser plasma accelerator, achieving higher energy. The solution used two different kinds of LPA, including a discharge capillary and a jet of supersonic gas, and developed a disposable mirror system for staging.
Physicists at the University of Maryland have accelerated electron beams to nearly the speed of light using millijoules of laser pulse energy, a significant improvement over previous methods. This breakthrough could lead to ultra-compact machines useful for materials science and medical imaging, overcoming barriers in cost, complexity,...
A new technique can help record better images of ultrafast phenomena by compressing narrow electron pulses to a billionth of a billionth of a second. This allows scientists to observe real-time molecular interactions and material structure changes in chemical reactions.
Researchers create a technique to emit electrons in a controlled direction using near-fields induced by strong laser pulses on glass nanoparticles. This method has potential applications in cancer therapy and imaging methods.
Caltech researchers used ultrafast electron crystallography to visualize changing atomic configurations of phase-change materials. They discovered a previously unknown intermediate atomic state that represents a physical limit to data recording speeds.
Scientists have successfully imaged ultrafast unidirectionally rotating molecules at 100 billion per second, revealing a quantum wave-like nature. The high-resolution imaging reveals rotational wave packets with distinct angular velocities, showcasing the transition from quantum to classical behavior.
Researchers at Michigan State University have developed a new method to change the electronic properties of materials, enabling more efficient solid-state electronics. By using ultrafast laser pulses, they can create new electronic phases with desired properties.
Scientists at Vienna University of Technology have developed a way to compress intense laser pulses by a factor of 20 using a cleverly designed hollow fibre. This tabletop technology makes creating short infrared pulses much simpler and cheaper than previously used setups.
Researchers from the University of Rochester created extraordinary new surfaces that efficiently absorb light, repel water, and clean themselves using femtosecond laser pulses. The multifunctional materials have potential applications in durable, low-maintenance solar collectors and sensors.
Researchers at UNL pinpoint characteristics of laser pulses that can control electron behavior, enabling predictive and controlled electron motion. The study's findings offer a new signature for classifying experimentally produced laser pulses.
Researchers at the Institute of Physical Chemistry of the Polish Academy of Sciences have developed a new compact high-power laser that can create ultrashort pulses. The laser generates powerful femtosecond pulses that can penetrate long distances, allowing for real-time atmospheric pollution detection using LIDAR technology.
Scientists at Vienna University of Technology have managed to explain how a laser pulse can change the electronic properties of glass, making it conduct electricity. The effect happens so quickly that it can be used for ultra-fast light-based electronics.
Researchers develop theoretical framework to generate coherent radiations in the water window range, enabling high-contrast imaging of biological samples. The study extends previous work on hydrogen and applies it to argon atoms, paving the way for improved spectroscopy techniques.
Researchers at Berkeley Lab discovered that certain requirements for laser pulses in emerging small-area particle accelerators can be significantly relaxed. This finding has the potential to bring about a new era of accelerators that would need just a few meters to accelerate particles to great speeds, rather than traditional accelerat...
Scientists at Vienna University of Technology create an 'optical synthesizer' that combines different frequencies to form a characteristic laser waveform, similar to music. This enables the creation of attosecond pulse radiation hundreds of times more intense than previous methods.
Researchers at Vienna University of Technology have successfully controlled the splitting of hydrocarbons into smaller fragments using femtosecond laser pulses. By manipulating the distribution of electrons, scientists can induce chemical reactions and select specific reaction paths.
Researchers used x-ray pulses to trigger superconductivity and reveal the rapid disappearance of 'charge stripes' that hindered it. The findings provide new insights into room-temperature superconductivity and its potential applications in electronics and computation.
A team at TUM has developed a glass-based detector that accurately determines the form of light waves in individual femtosecond pulses. The new detector simplifies measurements of ultrafast physical processes and enables the generation of stable attosecond light flashes with controlled shape.
A RIKEN research team successfully generated two-color X-ray laser pulses in the hard X-ray region, showcasing improved tunability and spatial separation. This achievement will facilitate investigations into ultrafast chemistry, plasma physics, and astrophysics.
A team of researchers has carried out the first detailed measurements of a unique kind of magnetism found in herbertsmithite. The study reveals a signature in the material's optical conductivity that supports theoretical predictions about the influence of magnetism on electrons.
Physicists at the University of Texas at Austin have built a tabletop particle accelerator capable of generating energies previously reached only by major facilities. The device accelerates electrons to 2 GeV over a distance of just 1 inch, marking a significant milestone in the development of X-ray laser technology.
Researchers have discovered a new way to switch magnetism using short laser pulses, achieving speeds of quadrillionths of a second. This breakthrough potentially opens the door to faster memory and logic device speeds, exceeding current gigahertz limits.
Researchers find that hot electrons generated by laser pulses cause ultrafast demagnetization in nickel, not the light itself. The study suggests a new possibility for spintronics research.
Researchers at TU Vienna have successfully controlled the splitting of large molecules with up to ten atoms using ultra-short laser pulses. The technique involves influencing the movement of electrons, which in turn affects the atomic nuclei, allowing for targeted control over specific elemental chemical reactions.
Scientists have developed a method to prevent 'light shifts' in atomic energy levels using pulsed radiation. The 'hyper' Ramsey excitation scheme suppresses the effect, allowing for more accurate measurements and potentially greater accuracy in optical clocks.
A University of Central Florida research team has created a 67-attosecond laser pulse, allowing scientists to watch electrons move in atoms and molecules. The technique, called Double Optical Grating, enables extreme ultraviolet light to be concentrated into the shortest possible pulse.
Scientists at SLAC National Accelerator Laboratory have improved the Linac Coherent Light Source (LCLS) by using a diamond filter to create narrower X-ray wavelength bands, enabling sharper images of materials and molecules. This advancement promises to speed discoveries and add new scientific capabilities.
An international team of scientists has successfully created bright coherent x-ray radiation using a new method developed at the Vienna University of Technology. This breakthrough enables the production of high-energy x-rays with short wavelengths, making it suitable for various applications such as materials science and medicine.
Researchers at SLAC National Accelerator Laboratory have created the shortest, purest X-ray laser pulses ever achieved, enabling ultrafast reactions to be seen in detail. This achievement fulfills a 1967 prediction and opens doors for new scientific discoveries.
Ultrafast laser pulses create precise patterns in metals and ceramics, but new research reveals an early plasma forms immediately before the mushroom cloud, hindering performance. Eliminating this interference could unlock new applications in manufacturing, materials science, and more.
Using a single UV laser pulse, researchers can now zap away biological tissue at multiple points simultaneously. This technique allows scientists to isolate specific cells and observe their shape dictated solely by internal forces. The method has potential applications in developmental biology and bioengineering.
Researchers achieve stable, high-energy electron beams by controlling wave velocity and intensity using a two-stage process. This innovation enables compact, cost-effective colliders for fundamental physics and new ultrafast light sources.
Researchers successfully simulated the operation of a laser-plasma wakefield accelerator in three-dimensional detail using the 'boosted-frame' method. This breakthrough enables calculations that were previously beyond the state of the art, reducing computational time by tens of thousands of times.
Scientists have observed relativistic transparency in plasma, allowing it to act as a fast optical switch. This phenomenon enables the flow of light through previously opaque material in less than a tenth of a picosecond.
Scientists measure delay of tens of attoseconds between light pulse and electron emission, challenging existing models. The findings have important implications for simulating electronic properties of materials.
Researchers at Purdue University have developed a miniature device capable of converting ultrafast laser pulses into bursts of radio-frequency signals. This technology has the potential to enable all communications to be transmitted from a single base station, making wires obsolete. The approach uses microring resonators to filter out ...
Researchers shed light on electron beam formation by attributing it to the evolution of the plasma bubble shape and nonlinear laser pulse evolution. The discovery is attributed to fine details in 3D simulations, offering a robust mechanism for self-injection and monoenergetic bunch formation.
Physicists and chemists have successfully controlled individual, negatively charged particles within a group of electrons in complex molecules. They used femtosecond laser pulses to manipulate the motion of outer electrons in carbon monoxide molecules.
Researchers at Kansas State University have developed a method to control the motion of electrons in a hydrogen molecule using ultrafast laser pulses. This breakthrough could lead to the creation of custom-made chemical compounds and a deeper understanding of basic physics processes.
Scientists at the University of Illinois have devised a method to characterize special surfaces by using a series of killer laser pulses. The technique measures the distribution of site enhancements on the substrate surface, allowing researchers to design better scattering surfaces for sensor applications.
A team of Japanese scientists has designed the world's first optical pacemaker for laboratory research, utilizing powerful laser pulses to regulate heart muscle cell contractions. This breakthrough technique may aid in understanding uncoordinated heart contractions and developing anti-fibrillation drugs.
Researchers successfully triggered electrical activity in thunderclouds by aiming laser light at them, generating plasma filaments that conducted electricity. The technology has potential applications in studying lightning strikes and evaluating the sensitivity of airplanes and critical infrastructure.
Researchers discovered ultrafast electron microscopy reveals switchable nanochannels in copper and TCNQ crystals. These micromaterials stretch under laser pulses, exhibiting reversible optomechanical phenomena useful for nanoelectronic applications.
Using a theoretical model, researchers have shown how a hydrogen molecule responds to laser pulses by creating a changing musical chord. The movement of the two protons in the molecule creates different frequencies, which are similar to notes in a musical chord.
Researchers have successfully observed electrons tunnelling through the binding potential of an atom nucleus under the influence of laser light. This breakthrough allows scientists to study electron movement in real-time and has implications for microelectronics and radiation therapy.
Scientists have developed a technique to accurately measure and control extremely short laser pulses, allowing them to track and manipulate electrons at the atomic level. The new method enables precise reconstruction of individual femtosecond pulses, opening up new possibilities for sub-atomic research.
Scientists capture ultrafast molecular motion by visualizing vibration and rotation of a hydrogen molecule as a quantum mechanical wave packet. The image reveals the wave packet's collapse and revival over extremely short timescales.
A Dutch-German research team has successfully controlled a chemical reaction by steering the motion of electrons with ultrashort laser pulses. The team used phase-controlled laser pulses to manipulate the timing of electron motion, leading to a preferential emission of deuterium ions and atoms in specific directions.
Researchers have made the fastest measurements of molecular vibrations, using a new technique that detects UV photons emitted by molecules under laser pulses. The results show atomic nuclei moving at varying speeds in different isotopes, providing insights into molecular dynamics.
Researchers obtain unique view of electronic orbitals and separation of NO dimers by exciting molecules with femtosecond laser pulses. The experiments reveal an intermediate Rydberg state that dissociates in about 600 femtoseconds, providing a detailed understanding of the dissociation process.
Researchers at JILA use laser pulses to take snapshots of atom collisions, revealing how atoms briefly lose form and energy when colliding. The results provide new insights into atomic dynamics and the laws of physics.