Articles tagged with Optics
Researchers at the Paul Scherrer Institute have successfully implemented mode-locking to generate coherent trains of X-ray pulses with unprecedented temporal structure. This achievement enables attosecond science and opens up new experimental possibilities, including precise timing of phenomena in gases, liquids, and solids.
Researchers at Princeton University have developed a new technique to convert low-energy light into high-energy LEDs, improving the ability to upconvert green light to blue or ultraviolet light. The method uses plasmonics to boost upconversion on a thin metal film, reducing the power needed by 19 times compared to previous setups.
Researchers have developed a novel approach to quantum memories using 3D-nanoprinted light cages filled with atomic vapor. The technology enables highly efficient conversion of guided light pulses into collective atomic excitations, with storage durations of several hundred nanoseconds. The platform's compact size and room-temperature ...
A new sample prior based point spread function (PSF) decoupling method enables accurate system characterization without theoretical assumptions. Regular biological samples act as modulators to optimize the system PSF, allowing non-parametric and adaptive imaging.
Researchers have developed a non-invasive technique, fast raster-scan optoacoustic mesoscopy, to observe microvascular endothelial dysfunction at the single-capillary level. The study found that this technology can resolve dynamics of individual cutaneous capillaries and provide better inter-day repeatability compared to existing methods.
Researchers review transfer printing techniques for integrating III-V semiconductor devices into silicon photonics, enabling diverse optical functionalities and applications. The technology offers precise control over thin film parameters and precise device placement.
Researchers developed LSTM-assisted optical fiber interferometric sensing to overcome the limitation of free spectral range, achieving simultaneous high sensitivity and wide measurement range. The technology uses gating mechanisms and sequence learning capabilities of LSTM to model long-term dependencies in complex interference spectra.
New review article highlights advancements in VLMs, enabling unified, intelligent approach to complex images. Key milestones include Vision Transformer and CLIP, bridging visual understanding and language generation.
The Advanced Photonics Young Innovator Award honors outstanding papers published in SPIE-CLP's journal over the past five years. Seven recipients are celebrated for their diverse range of innovative research, which shapes the future of optics and photonics.
Researchers at Paderborn University and TU Dortmund University have developed materials smaller than the wavelength of light and precisely manipulated photons. They created quantum light sources for quantum computing and ultra-fast communication, as well as low-temperature electronics to control quantum experiments.
Researchers at Lund University have developed a compact and elegant way to stretch ultrafast laser pulses using a diffraction grating, allowing for precise control over pulse duration. This enables full characterization in a single shot, without the need for pre-compensation optical elements.
Flat-band ultrastrong coupling is observed experimentally and theoretically verified, revealing a previously unexplored regime of light-matter interaction with potential applications in polariton-driven chemistry and materials science. Hybrid surface plasmon-phonon polariton modes are generated, extending over a wide range of momenta.
Researchers developed LightGen, an all-optical chip that performs advanced generative AI tasks with remarkable speed and efficiency. The chip hosts over two million photonic neurons, enabling complex tasks such as high-resolution image synthesis and video manipulation.
A team from the University of the Witwatersrand and Huzhou University discovered a vast alphabet of high-dimensional topological signatures, enabling robust quantum information encoding. This breakthrough utilizes orbital angular momentum to reveal hidden topologies in entangled photons.
Scientists have developed a new approach to analyzing polarization data, offering a more accurate understanding of complex materials. The elliptical vectorial metrics model simplifies the interpretation of polarization information, improving biomedical imaging and material design.
L. Jay Guo, University of Michigan professor, recognized for scalable nanopatterning technology enabling next-gen flexible electronics and structural color applications. His work has attracted interest from major companies like Samsung and Toyota.
Researchers developed a precision magnetometer based on magneto-optic material that changes optical properties in response to a magnetic field. The device can detect magnetic fields comparable to those of high-performance cryogenic magnetometers, but with minimal size, weight and power consumption.
Researchers at UCLA have developed a new method for creating thorium-based nuclear clocks using an electroplating technique. This breakthrough could lead to smaller, more efficient nuclear clocks that can be used in navigation systems, including satellite-free navigation and submarine navigation.
Researchers from TU Delft and Radboud University discovered CuInP₂S₆ (CIPS), a two-dimensional ferroelectric material, can control the pathway and properties of blue and ultraviolet light. CIPS shows giant birefringence in the blue-UV range, making it a potential game-changer for photonics applications.
Researchers have successfully generated and visualized helical electromagnetic pulses, a long-sought form of light that twists through space and time. The achievement overcomes significant challenges and opens up new possibilities for technologies like ultrahigh-speed communications and precision imaging.
Researchers developed a physically consistent model for single-pixel imaging, capturing multiple degradations and improving image resolution and fidelity. The method outperforms competing approaches under real-world complex degradations, offering robustness and superiority in practical environments.
A new paradigm in spectroscopic sensing has emerged through the integration of optical waveguides and Surface-Enhanced Raman Scattering (SERS) technology. This breakthrough enables ultra-sensitive, portable detection platforms with transformative on-site real-time monitoring capabilities.
A new open-source stabilization system enables sub-nanometer precision in super-resolution fluorescence microscopy, overcoming technical complexity. The system achieves high stability, allowing for long-duration single-molecule localization experiments with controlled drift-induced errors.
Researchers have achieved perfect transfer functions in Coherent Diffractive Imaging (CDI) with various numerical apertures, pushing the imaging resolution to the Abbe diffraction limit. Their computational framework, RFD, solves the high-NA CDI problem for the first time, achieving a record-high imaging resolution of 0.57λ.
Researchers at the Max Born Institute developed a laboratory-scale soft-X-ray instrument to study ultrafast processes of emergent textures in magnetic materials. They observed nanoscale magnetic maze domains and discovered complex reorganization patterns on picosecond to nanosecond timescales.
A new OAM-STM architecture enables 3-bit data transmission at ultrafast pulse rates, combining spatial separation with time decoding for improved scalability. The system achieves GHz-level transmission rates without electronic signal processing, enabling more compact high-speed systems.
Researchers at Cornell University have developed a method to produce the darkest fabric currently reported, with no angle dependency. The team used polydopamine and etching in a plasma chamber to create nanofibrils that mimic the light-trapping capabilities of the riflebird's ultrablack feathers.
The latest advancements in photomedicine, materials science, and soft electronics are driving the development of next-generation phototherapy devices. These innovations include wearable and implantable flexible sensing technologies combined with AI, enabling closed-loop systems for real-time adjustments and improved medical outcomes.
Researchers developed a snake-inspired system that bridges the gap between infrared and visible light using CMOS sensors. The innovation integrates an upconverter directly onto the sensor, enabling 4K ultra-high-resolution imaging of short-wave infrared and mid-wave infrared at room temperature.
Researchers proposed a neural array imaging system to overcome limitations of metalenses, achieving high-quality imaging with reduced thickness. The system uses an array of small-aperture metalenses, enabling accurate image reconstruction and task-level visual perception.
A new multifocal metalens design enables super-resolution imaging of brain organoids, achieving twice the resolution of conventional WF microscopy. The system also suppresses background noise and resolves fine neuronal fibers.
Researchers have developed a method to generate and detect sound waves at sub-terahertz frequencies using optically driven devices. The discovery was made possible by launching shear hypersound pulses with exceptionally large amplitudes in metal halide perovskites.
A new €4.4 million EU-funded doctoral network, HiPOVor, aims to establish optical vortex beams as a key technology for advanced light-matter interaction. The project will train 15 doctoral researchers in generating and applying high-power optical vortex beams.
Optic disc edema progression in spaceflight predicted using optical coherence tomography imaging, suggesting crew members without ODE on day 30 unlikely to develop concern on day 150. This technology offers opportunity for predicting ODE magnitude during longer missions.
Researchers at the University of Cambridge have developed a new method to electrically power insulating nanoparticles using molecular antennas. This breakthrough creates a new class of ultra-pure near-infrared LEDs with applications in biomedical imaging, optical communications, and sensing. The devices can be turned on with low operat...
Researchers found that virtual staining can improve the use of medical images in certain cases, but not necessarily others. The study urges caution when deciding whether to apply AI to a given workflow.
Scientists propose and experimentally realize optical skyrmions in the spatiotemporal domain using transverse orbital angular momentum and vectorial shaping of pulsed light. The structures exhibit fascinating evolution during propagation, including the Gouy phase shift and changing beam size.
Chameleons have two long, coiled optic nerves that enable their remarkable ability to look in two different directions at once. Researchers used CT scanning technology to visualize the hidden structure, revealing a unique trait not seen in any other lizard.
Researchers reveal peculiarities of room temperature organic photodetectors, highlighting their unique physical properties and special features. The upper detection limit for OSC photodiodes is comparable to that for ISC photodiodes, but with a significant spread in values.
Researchers discovered a new optical principle to amplify light in water using non-harmonic two-color femtosecond laser excitation. This breakthrough achieves a 1,000-fold enhancement in broadband white-light output and unlocks advances in bioimaging and ultrafast spectroscopy.
A new study uses X-ray microcomputed tomography to image and analyze 3D chaotic microcavities without harming them. The team found that distorted shapes lead to Arnold diffusion, confirming a long-standing theoretical prediction about 3D chaotic light dynamics.
Kono recognized for his contributions to optical physics, light-condensed matter interactions and photonic applications of nanosystems. His research explores how light interacts with materials at the nanoscale, potentially leading to new technologies in electronics and quantum communication.
Scientists at Max Born Institute and DESY develop a plasma lens that focuses attosecond pulses, improving the study of ultrafast electron dynamics. The technique offers high transmission rates and allows for focusing light across different colors.
A European team developed an affordable and customizable luminescence imaging instrument with dynamic illumination, offering precision in a single platform. The device supports complex illumination protocols and is freely accessible via Zenodo.
A research team has achieved a major breakthrough in non-Hermitian photonics by realizing the transition from bound states in continuum (BICs) to exceptional points (EPs) in metasurfaces. This discovery verifies core theory and provides a new perspective on unique physical properties of non-Hermitian systems.
Researchers reviewed novel photonics breakthroughs of 2024, focusing on coupling free electrons with nonlinear optical states in integrated photonic microresonators. This enables ultrafast electron-beam modulation and novel research opportunities for electron imaging and spectroscopy.
Scientists create a new type of spatiotemporal vortex burst with time-dependent photonic characteristics, enabling precise control of ultrashort pulses in spatial and temporal dimensions. This innovation advances beyond conventional methods and opens new avenues for applications in light–matter interactions, spectroscopy, and nonlinear...
Researchers developed ultra-low voltage optoelectronic polymer memristors to address high power consumption and complex integration in edge computing. The devices achieved a fingerprint recognition accuracy of 97.15% in a reservoir computing framework.
A team of scientists proposed and demonstrated a coherent detector to efficiently detect the non-separability of vectorial structured light. The detector enables single-shot detecting the non-separability with low spatial complexity. Experimental results indicate high efficiency, low complexity, and stability.
A team of researchers has created a novel comb-like structure for on-chip detection, achieving an unprecedented detection efficiency of 99.73%. The hybrid integration strategy allows for scalability in quantum photonic chip applications.
A new chip architecture has successfully overcome major limitations of photonic neural networks, achieving record-breaking input sizes and robust performance with partially coherent light sources. The device demonstrated accuracies of 94% and 96% in handwritten digit and fashion image classification tasks.
A new platform allows researchers to study the forces that bind tiny objects together, revealing insights into self-assembly processes and fundamental forces in nature. The platform uses gold flakes in a salt solution, with light bouncing back and forth through nanometre-sized cavities to display colors.
Scientists have reported an ultra-compact chaos-assisted computational spectrometer that overcomes the trade-off between physical size, resolution, and operational bandwidth. The device achieves a broad operational bandwidth of 100 nm with high spectral resolution of 10 pm.
A team of scientists uses weak-disturbance and high spatial-resolved imaging ability of PEEM to demonstrate near-field imaging and characterization of ultra-confined optical near fields in nanoslits. The technique identifies fabrication defects that are imperceptible to other means.
A new quantum-secured data transmission architecture has been proposed to address the challenges of AI-driven data centers. The system achieves terabit-per-second capacity while defending against future quantum threats through self-homodyne coherent transmission and integrated quantum key distribution.
A new fabrication method using photolithography template-assisted processing (PTA) enables high-resolution full-color Micro-QLED devices with pixel sizes ranging from 2 to 20 μm. The technology demonstrates outstanding performance with 1184 ppi resolution and brightness over 10,000 cd/m².
Recent advances in perovskite thin-film patterning techniques are crucial for high-performance optoelectronic devices. The research team introduces dimensional engineering, correlating material performance and structural dimensionality across different scales.
A new photonic chip called Gezhi achieves record-breaking speeds of 25 million images per second and consumes ultra-low light levels. This technology holds immense potential for large-scale expansion and high-performance applications in AI, autonomous driving, smart healthcare, machine vision, and language models.
The Ebbinghaus illusion shows that perception is not a mirror of reality but a construction of the brain. Research on fish and birds reveals diverse perceptual strategies, with guppies closely mirroring human perception and ring doves showing variability in their responses.
The research team created a directional radiative cooling thermal protective window by integrating a visible transparent broadband directional emitter and Low-E film with commercial PC windows. The window features high visible transparency and low emissivity, making it effective at reflecting thermal radiation and preventing heat absor...