Articles tagged with Laser Systems
Bound states in the continuum (BICs) provide a generalized approach to achieve extremely high-Q resonant cavities. BICs offer powerful mechanisms for enhancing light-matter interactions and have been explored in various photonic structures over the past few decades.
Researchers develop a new technique to detect circulating tumor cells in blood, overcoming noise issues with existing methods. The dual-ratio approach enhances penetration range and accuracy, paving the way for quicker diagnosis of metastasis.
Researchers have proposed an innovative solution to address limitations of lidar technology, enabling imaging in low SNR environments. The novel technique uses a high-scanning speed AOD and metasurface-enhanced scanning lidar, extending ambiguity range by up to 35 times.
A team of researchers from EPFL has found a way to harness the unique features of chaotic frequency combs to implement unambiguous and interference-immune massively parallel laser ranging. This innovative approach offers significant advantages over conventional methods, enabling hundreds of multicolor independent optical carriers.
Researchers discovered bimetallic tartrate complexes with unique structures, formed by insufficient ligand, leading to improved sensor characteristics for microbiosensors. The study showcases the potential of laser-induced chemical liquid phase deposition for creating nanostructures with various applications.
Researchers developed a new approach to create a wideband microwave absorption metamaterial using ultraviolet lasers, achieving high absorption performance and control over electrical and magnetic properties. The process enables mass production of complex structures without post-treatment.
Fiber sensing scientists from Shenzhen University have developed an encrypted fiber optic tag that can be used for all-optical labeling and recognition of optical transmission channels. The team proposed a method using fiber Bragg grating arrays prepared by femtosecond laser direct writing to flexibly store different coding sequences.
The researchers have demonstrated significant improvements for chip-based sensing devices that can detect or analyze substances across widely varying concentrations. They developed signal-processing techniques that enable seamless fluorescence detection of a mixture of nanobeads in concentrations across eight orders of magnitude.
Researchers at NIST have demonstrated a capability to transmit extremely precise time signals through the air between far-flung locations, paving the way for ultra-precise timing links with geosynchronous satellites. The method enables time synchronization with femtosecond precision and robustness in atmospheric disturbances.
F. Ömer Ilday brings ultrafast lasers expertise to Ruhr University, focusing on materials science and complex laser-matter interactions. He aims to establish a new center for interdisciplinary collaborations and promote start-ups.
Researchers have developed a custom OCT setup that incorporates a vertical cavity surface emitting laser (VCSEL) diode, which could increase access to OCT imaging and help catch eye problems early. The system performed well in imaging the eye of a healthy volunteer and showed potential for use in biometric eye scanner systems.
Researchers at the University of Tsukuba created a liquid droplet-based laser that remains stable under ambient conditions and can be tuned using gas convection. The development enables the creation of flexible optical communication devices with potential applications in airflow detectors and fiber-optics communications.
Researchers have successfully demonstrated terahertz wireless communication using a micro-resonator soliton comb, which can potentially overcome technical limitations in current wireless electronics and enable seamless connections between optical and wireless communication systems. The study achieved data transmission rates of up to 2 ...
A new publication demonstrates the use of laser direct writing to create flexible humidity sensors based on Ga2O3 and liquid metal. The sensors show a highly stable performance with rapid response and recover time, making them suitable for healthcare monitoring applications.
The City University of Hong Kong has developed a novel electron microscope that combines scanning and transmission electron microscope modes in a compact format. The device can produce high-resolution images in five minutes, enabling the study of atom dynamics and beam-sensitive materials.
Scientists create a simple approach to fabricating highly precise 3D aperiodic photonic volume elements (APVEs) for various applications. The method uses direct laser writing to arrange voxels of specific refractive indices in glass, enabling the precise control of light flow and achieving record-high diffraction efficiency.
A 6-year grant of $1.65 million will support a training program for ultrafast laser science and technology, connecting university researchers and industry partners across Canada. The TrUST project aims to develop knowledge networks and practices in this field, promoting socio-economic development and innovation.
Researchers have developed a new type of OLED display that uses strong coupling of light and matter to improve color saturation and brightness. The displays, known as polariton-based OLEDs, achieve this without compromising efficiency or viewing angle dependency.
Direct incorporation of a metasurface in a laser cavity enables spatiotemporally modulated laser pulses. Giant nonlinear saturable absorption allows pulsed laser generation via Q-switching process.
Researchers at UMD successfully guided light in a 45-meter-long air waveguide, creating a high-density core to guide a laser. The technique utilizes ultra-short laser pulses to create a plasma that heats the air, expanding it and leaving a low-density path behind.
Researchers at Brookhaven National Laboratory demonstrate a new color-shifting strategy that relies on interactions between lasers and vibrational energy in ionic liquids. The method offers an efficient and customizable approach to shift laser colors, with applications in science, industry, and medicine.
Researchers at the University of Maryland successfully guided a 45-meter-long beam of light through an unremarkable hallway, pushing the limits of an innovative technique. The team utilized ultra-short laser pulses to create a plasma that heated air, forming a high-density core and enabling efficient light delivery.
A University of Maryland-led team developed a miniaturized analyzer to detect signs of life on other planets. The instrument combines a pulsed ultraviolet laser with Orbitrap analysis to identify chemical structures in planetary samples.
Researchers at CELIA have developed a laser drilling method that creates elongated, crack-free micro-holes in glass. This breakthrough allows for high-aspect ratio holes with smooth inner walls, enabling new applications in microelectronics.
A new parallel peripheral-photoinhibition lithography system has been developed, enabling the fabrication of subdiffraction-limit features with high efficiency. The system uses two beams to excite and inhibit polymerization, allowing for nonperiodic and complex patterns to be printed simultaneously.
Researchers achieved unprecedented extreme physical conditions using a 100 PW laser system, enabling new applications and fundamental science. The system features an OPCPA front end that supports peak powers of 263 TW and pulse durations as short as 13.4 fs.
Researchers combined ultrafast imaging with 3D atomistic simulation to study femtosecond laser ablation. The technique revealed the ablation mechanism of bulky gold at different excitation energy flow densities, providing guidance for material fabrication.
Researchers developed an all-optical approach to pumping chip-based nanolasers, enabling dense arrays of highly precise devices. This method could aid in meeting the growing need for faster data processing, streaming ultra-high-definition movies and gaming.
Researchers developed a laser-based approach to perform microbiopsies, enabling fast, painless tissue sampling with minimal damage. The novel technique uses laser ablation to extract tiny tissue volumes, which can be analyzed using virtual H&E imaging and other techniques in minutes, not hours.
Researchers develop an algorithm to automate feature extraction from HD maps and point cloud data. The model achieved high precision in detecting road signs and traffic lights, with zero false detections.
Harvard scientists create a high-performance on-chip femtosecond pulse source using a time lens, enabling broadband, high-intensity pulse sources. The device is highly tunable, integrated onto a small chip and requires reduced power compared to traditional table-top systems.
Researchers at ETH Zurich introduce a novel single-cavity architecture for a dual-comb laser, enabling fast and precise scanning of optical delays. The system achieves high precision (2-fs) and stability (up to 500 Hz) for an optical delay of 12.5 ns, opening up new possibilities for practical applications.
Researchers at the International Centre for Radio Astronomy Research in Western Australia have made a breakthrough in hi-tech communications by developing a technology that can correct for atmospheric turbulence. This allows for superior optical wireless transmission, reducing reliance on slower radio transmission.
Scientists at the Max Planck Institute have developed a unidirectional device that significantly increases the quality of optical vortex signals. By transmitting selective optical vortex modes exclusively unidirectionally, they largely reduce detrimental backscattering to a minimum.
MIT researchers have developed a new approach to assemble nanoscale devices from the bottom up, using precise forces to arrange particles and transfer them to surfaces. This technique enables the formation of high-resolution, nanoscale features integrated with nanoparticles, boosting device performance.
Researchers have developed a high-performance laser system capable of measuring electron temperature and density in plasma at a world record speed of 20,000 times per second. This breakthrough enables detailed measurements of transient phenomena in plasmas, crucial for understanding and controlling fusion power generation.
A team of researchers from KIT, Heidelberg University, and QUT developed a laser printing process that can print micrometer-sized parts in a few hundred milliseconds. They achieved this by crossing red and blue laser beams, allowing for high-speed and high-resolution printing
The researchers used a 3D laser printing approach to create high-quality, complex polymer optical devices directly on the end of an optical fiber. The device turns normal laser light into a twisted Bessel beam with low diffraction and can be used for applications like STED microscopy and particle manipulation.
A team of researchers from Osaka University used computer simulations to model the optical radiation force distribution induced by an interference pattern, enabling the fabrication of nano-sized structures with chiral properties. This technology has the potential to create new optical devices, such as chirality sensors.
Researchers developed a metasurface device with three working modes, exploiting nanostructures to manipulate light and create holographic or structural-color nanoprinting images. The device offers two layers of security for anticounterfeiting measures, providing a simple yet effective approach to fight against counterfeiting.
Researchers at the Max Born Institute have used novel ultrashort soft X-ray spectroscopy to study the fate of molecular nitrogen when an electron is kicked out. They found that the B state has a similar degree of excitation as the X state, contradicting previous models. Instead, a coherent interplay between light fields enables lasing ...
A team from Harvard John A. Paulson School of Engineering and Applied Sciences has developed an electro-optic frequency comb that is 100-times more efficient and has more than twice the bandwidth of previous state-of-the-art versions.
Scientists have developed a new solar-powered laser with improved conversion efficiency, enabling more stable and efficient space-based energy generation. The design features four mirrors and laser rods, allowing for precise control over the pump cavity and minimizing thermal stress effects.
A new wireless laser charging system uses infrared light to transfer high levels of power over distances of up to 30 meters, sufficient for charging sensors. The system automatically shifts to a safe low power delivery mode if an object or person blocks the line of sight, achieving hazard-free power delivery in free space.
Researchers from TU Wien and Hebrew University develop 'light trap' that allows complete absorption of light in thin layers using mirrors and lenses. The system works by steering the light beam into a circle and then superimposing it on itself, blocking any escape.
A team of researchers from TU Wien and The Hebrew University of Jerusalem has developed a 'light trap' that absorbs light perfectly in thin layers. This method uses mirrors and lenses to steer the light beam into a circle and then superimpose it on itself, preventing the light from escaping.
A homemade microspectrometer invented by Dr. Jamie Laird enables scientists to image defects in perovskite solar cells, improving stability and efficiency. This innovative technique has the potential to revolutionize next-generation photovoltaics, including space missions.
Researchers successfully demonstrate room-temperature multiband microlasers spanning a large wavelength range using rare earth elements. The lasing process combines downshifting and upconversion, expanding the emission wavelength range. The resulting microlasers exhibit good intensity stability and are suitable for practical applications.
Researchers have developed a new chip-based beam steering device that eliminates aliasing errors, enabling high-quality beam steering over large fields of view. The device, published in Optica, has the potential to revolutionize lidar applications in autonomous driving, virtual reality, and biomedical sensing.
Researchers have developed a new method to generate flexible needle-shaped laser beams, extending the depth-of-focus for optical coherence tomography (OCT) imaging. This allows for improved lateral resolution, signal-to-noise ratio, contrast, and image quality over a long depth range.
Scientists at Imperial College London have created a laser device that can reconfigure its structure in response to changing conditions. The innovative technology mimics the properties of living materials, enabling self-healing, adaptation, responsiveness, and collective behavior.
Researchers developed a lidar-based system for smart cars to recognize objects more accurately than cameras. The system uses a grid map to divide the field of view into regions containing individual objects.
University of Missouri researchers develop wearable smart bioelectronic devices, including a 'smart' face mask that can monitor physiological status and detect respiratory problems. The masks also use laser-assisted fabrication to provide breathable soft electronics for better real-time health monitoring.
Scientists at Max Born Institute create novel method to probe magnetic thin film systems, identifying heat injection from platinum layer as cause of magnetization changes. The approach allows femtosecond temporal and nanometer spatial resolution, paving way for studying ultrafast magnetism and device-relevant geometries.
Researchers at EPFL have developed a photonic integrated circuit based erbium-doped amplifier that generates record output power and provides high gain, matching commercial EDFAs. This breakthrough enables new applications in optical communications, LiDAR, quantum sensing, and memories.
A new study published in The Journal of Urology found that a super-pulsed thulium fiber laser system improved stone-free rates and reduced residual fragments in pediatric patients with urinary stones compared to standard low-power holmium:yttrium-aluminum-garnet lasers. The study, which evaluated 125 procedures in 109 patients, showed ...
Physicists from the University of Amsterdam successfully created a continuous Bose-Einstein Condensate, enabling an eternal atom laser that can produce coherent matter waves. This breakthrough solves the problem of fragile BECs and paves the way for technical applications.
The researchers successfully demonstrated attosecond-pump attosecond-probe spectroscopy to study non-linear multi-photon ionization of atoms. The experiment showed that the absorption of four photons from two attosecond pulse trains led to three electrons being removed from an argon atom.
A team of researchers has developed a novel photonic emulator that reveals the intricacies of light behavior in non-Hermitian optical systems. The findings suggest that the topology of energy surfaces plays a crucial role in determining light behavior, leading to novel mechanisms for light manipulation and technological advancements.
A novel all-optical switching method has been developed to make optical computing and communication systems more power-efficient. The method utilizes the quantum optical phenomenon of Enhancement of Index of Refraction (EIR) to achieve ultrafast switching times, ultralow threshold control power, and high switching efficiency.