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 have achieved a record-breaking transmission of a laser signal through the atmosphere, eliminating turbulence. This breakthrough enables precise time comparisons and has exciting applications in fundamental physics research, including testing Einstein's theory of general relativity.
A team of scientists has developed a novel hydrogel formula based on PEGda and HMPP for 3D direct laser writing (DLW) with low threshold power using a green laser. The new formula enables the fabrication of precise microstructures with high resolution and mechanical stability, suitable for biomedical engineering applications such as wo...
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.
A new laser-based process allows for the 3D printing of intricate glass parts with high precision and resolution. The technique uses multiphoton polymerization, which enables the creation of complex shapes without layer-by-layer buildup.
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 design concept aims to increase laser peak power by compressing pulse duration instead of increasing energy, pushing the record to the Exawatt class. The design uses a two-beam pumped WNOPCPA and carefully optimized phase-matching to avoid pump interference.
Scientists study how tuning aspects of a powerful laser beam can affect the acceleration of electrons, finding that optimal values of laser beam waist increase maximum acceleration. They observe significant energy gains in full and half-pulse interactions, reaching up to 1 GeV.
Researchers from Shanghai Jiao Tong University have successfully designed and fabricated a microcavity on a lithium niobate chip, achieving integrated light source in the communication band. The innovative technology realizes the potential of lithium niobate thin films for efficient optoelectronic integration.
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.
Jefferson Lab has shipped the final new section of accelerator, called a cryomodule, for an upgrade of the Linac Coherent Light Source (LCLS) at SLAC National Accelerator Laboratory. The upgraded machine will accelerate electrons at superconducting temperatures to generate 1 million X-ray laser pulses per second.
A curved blade is proposed for a laser scalpel to expand its medical applications, being two times thinner than the current cylindrical option. The concept utilizes a photonic 'hook' formed by an amplitude or phase mask at the fiber end, enabling precise tissue manipulation and reduced bleeding.
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.
Researchers at MIT and University of Waterloo developed a high-power, portable terahertz quantum cascade laser that can generate powerful sensing and imaging capabilities. The device can be used for pinpointing skin cancer, detecting hidden explosives, and analyzing gases, drugs, and products.
Researchers at the Heidelberg Max Planck Institute for Nuclear Physics have investigated ultrafast fragmentation of hydrogen molecules in intense laser fields using a new method. They used the rotation of the molecule as an internal clock to measure the timing of the reaction triggered by a second laser pulse.
Researchers Nathalie Picque and Theodor Hänsch developed dual-comb spectroscopy to detect spectral patterns even in extremely low light conditions. This technique enabled the recording of broad spectra with over 100,000 colors in near complete darkness.
Physicists at ETH Zurich have demonstrated a new method for delivering multiple laser beams precisely to the right locations in a stable manner, allowing for delicate quantum operations on trapped atoms. The approach enables high-fidelity logic gates and scalability for large quantum computers.
A team of researchers at INRS has discovered a method to tune the spectrum of a laser to the infrared using a simple and much less expensive system: a hollow-core fiber filled with nitrogen. This approach delivers optical pulses shorter than those of the input laser and with high spatial quality.
Scientists at NIST and the University of Maryland have developed a microchip technology that can generate a wide range of visible laser colors using near-infrared laser light. This approach enables precise control over wavelength, opening up new possibilities for applications in precision timekeeping and quantum information science.
Researchers at Aarhus University have discovered a method to narrow laser linewidth by up to 500 times, enabling higher-order modulation formats in coherent communication. This breakthrough technology has the potential to increase optical network transport capacity and simplify laser packaging for real-world applications.
The research team developed a new ultrafast fiber laser that produces an average power of over 10 kW without significant degradation in beam quality. This technology paves the way for industrial-scale materials processing and visionary applications such as space debris removal.
Researchers at Tokyo Medical and Dental University found that laser stimulation inhibits sclerostin expression in bone without causing inflammation, providing a new treatment possibility for osteoporosis. This method may aid the development of laser-based therapies to promote bone regeneration.
Researchers at Seoul National University developed a novel laser-thermal mechanism that realizes ultra-fast construction of PDMS devices. The technique, named successive laser pyrolysis (SLP), provides an alternative to conventional soft lithography and enables the direct fabrication of various PDMS structures.
Researchers developed a new technique using Laser Raman spectroscopy to analyze mineral-organic aggregations (MOA) for estimating thermal maturity levels in high and over-mature marine shales. This method provides an alternative solution for evaluating maturity in lower Paleozoic and Precambrian shales with rare organic matter.
Researchers created a compact and ultrafast high-power yellow laser with excellent beam quality, filling the need for practical yellow light source emitting ultrafast pulses. The laser's wavelength range is highly absorbed by hemoglobin in blood, making it useful for medical treatments, dermatology, and eye surgery.
A team of researchers at DESY has achieved a record-breaking run time of 30 hours for a plasma accelerator, accelerating over 100,000 electron bunches per second. The milestone brings scientists closer to developing practical applications of this innovative technology, which holds promise for powerful and compact particle accelerators.
Researchers at Stockholm University have found that water can align its molecules like a liquid crystal when exposed to laser light. The alignment lasts only for a fraction of a second and is confirmed by both experimental studies and molecular simulations.
Researchers at the University of Arkansas have developed the first electrically injected laser using semiconducting material germanium tin. The diode laser offers improved micro-processing speed and efficiency at significantly lower costs.
Researchers have developed a new type of laser beam that doesn't follow long-held principles about how light refracts and travels. The beams, known as spacetime wave packets, can be arranged to behave in the usual manner, not changing speed at all, or even speeding up in denser materials.
University of Rochester researchers have created a new device that enhances ultrafast laser pulses, producing the shortest pulse ever from a gain-free fiber source. The technology has significant implications for various engineering and biomedical applications, including spectroscopy and frequency synthesis.
Researchers found that a fundamental principle of lasers, compensating for losses with amplified light, is only an approximation. A tiny excess loss due to luminescence inside the laser provides the key to understanding the spectral linewidth.
Scientists from Osaka University have reduced X-ray free-electron laser beam diameter to 6 nanometers, enabling precise imaging of single virus particles and ultrafast chemical processes. This advancement improves the accuracy of measurements closer to the atomic level than previously possible.
Researchers have developed a new laser-based microscope that can resolve the distribution of electrons in crystal lattices with unprecedented resolution. The technique, known as Light Picoscopy, uses powerful laser pulses to drive electrons into fast motion, allowing them to emit radiation that reveals their position within the crystal.
Researchers developed a precision welding technique using laser heating to join thermoplastic resins like PPS, COP, and PET. This method improves the quality of small electronic components, microchannels, and flat panels by avoiding overheating and burning.
Researchers from Swiss Federal Laboratories for Materials Science and Technology (EMPA) have developed a method to detect keyhole instability in laser deep penetration welding. The technique uses an acoustic sensor and optical measurements analyzed with artificial intelligence, allowing for real-time monitoring of weld quality.
An international team of researchers used the proton radiography technique to visualize Weibel instabilities in a laser-driven plasma. They highlighted two variants of the instability and demonstrated precision imaging techniques that surpass other methods.
University of Washington researchers have successfully cooled a solid-state semiconductor material using an infrared laser, achieving a temperature drop of up to 20 degrees C. The method has wide potential applications in fields such as quantum communication and scientific instruments.
A team of scientists has successfully produced a special type of light called a frequency comb, which consists of different light frequencies arranged at regular distances. The breakthrough uses circular quantum cascade lasers and turbulence to create the ordered light, contradicting current laser theory.
Researchers at Harvard University have successfully generated frequency combs using turbulence in light, contradicting current laser theory. The discovery could lead to more efficient and compact devices for applications such as telecommunications and portable sensing.
Scientists at the University of Chicago have developed a new quantum communication technique that bypasses traditional channels, allowing for secure information transfer without photon loss. This breakthrough enables faster and more efficient communication systems, opening up new possibilities for future technologies.
Scientists at Empa used 3D laser printing to produce materials with specific magnetic properties. By varying the size and lifetime of the melt pool, they were able to create alloy compositions with precise control over nitrogen content.
Scientists from the U.S. Army Combat Capabilities Development Command's Army Research Laboratory have improved distributed algorithms for multi-agent coordination, enabling better situational awareness and communication capabilities for Soldiers in limited bandwidth scenarios.
Researchers develop nanoparticle-sized semiconductor laser generating coherent green light at room temperature, overcoming a significant technological hurdle. The tiny laser operates efficiently without external pressure or low temperatures.
Researchers have successfully recreated the process of creating matter from light using high-power lasers. The new method produces electron-positron pairs, mimicking conditions during the first minutes of the universe and providing an improved model for studying antimatter.
A new study simulates electron dynamics during femtosecond laser ablation of MoS2, revealing two types of ablation mechanisms and distinct electron dynamics. The results show that higher fluence induces superheated liquid formation, leading to dramatic changes in reflectivity and micro-honeycomb structures.
Researchers have developed a visible-wavelength passively mode-locked all-fibre laser, generating picosecond pulses at 635 nm. The laser has a tunable duration and a narrow spectral bandwidth, opening up new possibilities for applications in optical communications, biomedicine, material processing, and scientific research.
A new study by Children's Hospital of Philadelphia researchers found that a primary care-based intervention promoting parent-teen communication led to less distress among teens and more positive emotions. The intervention, which included an eight-page booklet with discussion prompts, showed promise in improving adolescent health outcomes.
Researchers at EPFL have developed a new way to implement parallel FMCW LiDAR by using integrated nonlinear photonic circuitry. The technology enables up to 30 independent FMCW LiDAR channels, improving acquisition rates tenfold for autonomous vehicle applications.
Researchers discovered that controlling laser power can mitigate spatter issues in L-PBF printing, reducing the formation of defects and deformations. This breakthrough could lead to more reliable and high-quality prints, revolutionizing manufacturing in advanced fields.
Researchers have demonstrated a new metasurface laser that produces 'super-chiral light' with ultra-high angular momentum, enabling control over optical communications and applications in industries like food, computer, and biomedical. The laser design allows for high power operation in a compact design.
Scientists have developed a method for precise, fast and high-quality laser processing of halide perovskites, promising light-emitting materials for solar energy, optical electronics, and metamaterials. The new technology can help to solve the problem of complicated processing and degradation of perovskites under various conditions.
Researchers at the University of Rochester's Laboratory for Laser Energetics developed a novel method to shape intense laser light, accelerating electrons to record energies in very short distances. This technology could allow scientists to perform tabletop experiments to probe the Higgs boson and explore extra dimensions.
Scientists have created a compatible semiconductor laser made of germanium and tin, with efficiency comparable to conventional GaAs semiconductor lasers on Si. The new laser can be manufactured during the CMOS production process, reducing waste heat and enabling continuous operation.
Researchers in Japan have developed a low-noise fiber link to connect high-precision clocks, enabling the creation of powerful networks for applications like earthquake detection and communication systems. The system uses a cascaded link with ultralow-noise laser repeater stations to minimize noise and stabilize the laser signal.
Scientists propose a new design that replaces traditional high-n materials with tunable nanolaminate layers to achieve improved performance parameters. The new coating enables larger bandwidth, higher LIDT, and smaller transmission ripples compared to traditional designs.
Researchers from NTU Singapore and the University of Leeds create a 'topological' laser that can route light particles around corners and cope with defects in its manufacture. This innovation has the potential to improve the performance of laser systems and enable more efficient production using existing semiconductor technologies.
Researchers at Nagoya University have successfully designed a laser diode that emits deep-ultraviolet light at a record-breaking wavelength of 271.8 nanometers. This achievement overcomes previous limitations and enables new applications in healthcare, such as disinfection and treating skin conditions like psoriasis.
A study tracing acoustic communication across land-living vertebrates reveals that the ability to vocalize dates back to 350 million years ago. The researchers found that this trait is associated with a nocturnal lifestyle, which provides an advantage for sound-based communication.
Researchers successfully demonstrated a quantum dot LED that operates as an optically pumped laser, clearing the path towards versatile colloidal quantum dot laser diodes. These devices have the potential to revolutionize fields like photonics, optoelectronics, and medical diagnostics.