Articles tagged with Optics
Scientists successfully built the smallest X-ray interferometer to measure how X-rays interact with atomic nuclei. This breakthrough technology enables precise measurement of X-ray refraction and provides new avenues for research.
Researchers at Tokyo University of Science demonstrated a method for manipulating metallic chiral nanoparticles using circularly polarized light. By confining light to an evanescent field near the surface of ultra-thin optical fibers, they selectively transported left- and right-handed particles based on their chirality.
A new online platform enables non-experts to analyze complex OCT signals and generate realistic digital phantoms for optical cancer diagnostics. The platform's multimodal processing capabilities facilitate disease classification and tumor margin isolation.
A new ultra-thin optical film improves the quality of light used in LCD resin-based 3D printers, ensuring precise details and reducing printing errors. The film's design enhances collimation and uniformity, paving the way for affordable industrial or medical-grade products.
Researchers developed a novel design paradigm for vectorial microlasers with designable topological charges using quasi-BIC Möbius-like correspondence in photonic-crystal slabs. This approach allows for programmable structured-light sources for integrated photonic circuits and multi-dimensional optical information encoding.
A team of scientists developed an AI-generated photonic (AIGP) framework that directly maps optical properties to subwavelength photonic structures using a latent diffusion model. The system achieves high-precision mapping, supports flexible design constraints, and possesses fuzzy search capability.
Researchers have developed a novel approach to fabricate high-performance nanophotonic devices with record-breaking ultra-deep nanohole waveguides. The technique enables the creation of nanostructures with extreme depth-to-diameter ratios, overcoming long-standing limitations in single-pulse nanolithography.
Researchers developed a compact metasurface polarimeter for cancer tissue analysis, offering label-free imaging with reduced variability. The device's miniaturization opens the door to portable polarization-based confocal microscopy for routine histopathology screening.
Scientists have demonstrated a reconfigurable photonic circuit implementing wide class of complex unitary transformations via optical manipulation at three layers only. The platform enables flexible access to many co-propagating structured modes, making it suitable for applications in communication, information processing, and simulation.
Researchers have developed graphene-integrated microtube resonators with a unique lobe structure to improve optical modulation and detection. The design enhances axial mode quantization, allowing for efficient light localization and trapping within specific regions of the tube.
Researchers have developed a quantum-enhanced in-memory stochastic computing system based on a room-temperature quantum memory, leveraging intrinsic randomness to perform computations securely and efficiently. The system outperforms classical methods in terms of coincidence rates and processing speed.
A new approach to ultrafast nonlinear frequency conversion using dissipative quadratic soliton physics enables simultaneous generation of bichromatic femtosecond pulse trains in a single quadratic nonlinear cavity. This innovation offers a scalable and efficient solution for diverse scientific and technological applications.
Researchers at SKKU have successfully demonstrated the mass production of large-area visible metalenses using a fully automated roll-to-roll manufacturing platform. The platform achieves a record-high throughput of 300 metalenses per second, paving the way for the commercialization of flat optics.
Researchers develop fluoride-engineered perovskite nanocrystal glass for high-efficiency, full-color emission and ultra-high-resolution holographic displays. The glass matrix enables stable and efficient photoluminescence of PNCs, driving the creation of high-quality dynamic displays.
The award recognizes the book's significant contributions to research, teaching, business, and industry in the field of optics and photonics. The authors, Thomas Luhmann, Stuart Robson, Stephen Kyle, and Jan Böhm, are renowned experts in photogrammetry and 3D imaging.
Researchers developed a quantum-enhanced in-memory stochastic computing system for secure and efficient computation, leveraging room-temperature quantum memory. The system outperforms classical methods with improved coincidence rates and processing speed despite low retrieval efficiency.
Researchers explore new design strategies for metasurfaces and BICs, enabling scalable light control and efficient optoelectronic platforms. These advances have practical implications for applications in lasing, sensing, nonlinear optics, wavefront shaping, and imaging.
Researchers at Stanford University have developed a non-invasive method to deliver light to specific locations in the body using nanomaterials and ultrasound waves. This technique provides a potential roadmap for easier, less invasive light-based treatments, with applications in biology, medicine, and gene editing.
A research team has successfully merged accidental BICs to create a broad momentum-space 'safe zone' for chirality, achieving high sensitivity and wide-angle robustness. This breakthrough paves the way for practical deployment of high-performance chiral photonic devices.
Researchers at Osaka Metropolitan University discovered that dragonfly visual protein detects red light similarly to mammals. This finding has potential applications in medical fields relying on red light-sensing, such as optogenetics.
Scientists developed a multifunctional molecule passivation strategy, achieving record-high EQE at 6,441 cd m^-2 and eliminating roll-off. The devices maintain 18.47% EQE at 9,587 cd m^-2 with nearly eliminated roll-off, showcasing improved optical performance.
Researchers developed a nanophotonic platform to generate quantum optical Stokes skyrmion states with controlled topological invariant, eliminating the need for post-selection. This enables robust morphing of quantum information into free-space.
Researchers have successfully initialized and detected nuclear spin states in a europium-based molecular crystal using laser light, achieving nuclear spin quantum coherence with a lifetime of up to two milliseconds. This breakthrough paves the way for scalable quantum computers and atomically precise qubit registers.
A team of scientists has developed a new neural network called the mixture probability sampling network (MPSN) to create ultra-precision structural colors. The MPSN achieves high accuracy and diversity in solution output, overcoming limitations of existing methods.
A new laser source generates a specific type of light source called a frequency comb in the mid-infrared region, paving the way for miniaturization. The device overcomes engineering challenges to produce bright, stable, and compact frequency combs.
Researchers from NIST and University of Colorado, Boulder, have demonstrated highly stabilized fiber links for quantum networking. They achieved nanometer precision stabilization while separating the classical light from the quantum signal, enabling the transmission of quantum information reliably.
The study demonstrates simultaneous delayed fluorescence and phosphorescence in an organic luminescent material with multiple excited states. It reveals the existence of a second triplet state (T₂) and the competition between TADF and phosphorescence.
A novel neural illumination estimation and editing framework reconstructs coherent 3D light fields from a single view, achieving 17.0% improvement in image fidelity and demonstrating measurable improvements in perceptual realism for next-generation near-eye displays.
Researchers developed a compact optical wireless transmitter that combines high data rates with improved energy efficiency. The system uses a 5x5 array of lasers to transmit data in parallel, achieving aggregate data rates of up to 362.7 gigabits per second.
Researchers at the University of Rochester have developed a squeezed phonon laser that precisely controls individual particles of vibration or sound, allowing for accurate measurements of gravity and other forces. This technology has the potential to create more accurate, 'unjammable' navigation systems without relying on satellites.
Scientists have developed a universal nano-amplifier strategy using plasmonic gold or silver nanocavities to overcome detection barriers in 2D materials. This breakthrough allows for the clear detection of layer-breathing modes in multilayer graphene, hBN, and their heterostructures.
Researchers from the University of Warsaw and other institutions created optical tornadoes by combining spatially variable birefringence with an optical microcavity. This allows for the creation of miniature light sources with complex structures, potentially enabling simpler and more scalable photonic devices.
Researchers at Hiroshima University have developed a new experimental method to demonstrate the physical delocalization of individual photons in an interferometer. The study challenges traditional interpretations of quantum mechanics and has significant implications for high-tech sensors and our understanding of reality.
Technion researchers confirm 50-year-old prediction by measuring the speed of 'dark points' within light waves. The team's achievement reveals universal laws of nature shared by all types of waves, enabling new microscopy techniques to study hidden processes in physics, chemistry, and biology.
Researchers developed a holographic data storage approach that combines amplitude, phase, and polarization to store more data in the same space. The new method increases information density while simplifying readout, making it suitable for smaller data centers and faster data processing.
Researchers have demonstrated that silicon nanospheres can enhance second-harmonic generation in monolayer transition-metal dichalcogenides while preserving valley-polarization information. The study provides design guidelines for efficient, polarization-preserving nonlinear light sources at the nanoscale.
Researchers have developed a sub-1-volt, reconfigurable Gires–Tournois resonator for full-colour monopixel reflective displays. The platform exhibits robust performance in achieving vivid colour modulation at sub-1-volt operation and enables uniform colour tuning within a single pixel.
Researchers developed scanning-exciton optical nanoscopy to map nanoscale light fields and local density of optical states simultaneously. The technique provides correlative mappings with a spatial resolution of few nanometers, unlocking new physics discoveries and technology breakthroughs.
Using AI-driven analytical methods, researchers have created a custom OCT system that enables the objective measurement of wound progress over time. The platform shows that stiffer mechanical properties improve wound healing outcomes, with faster transition to intact regenerated tissue.
Researchers developed flexible, stretchable on-chip optical tweezers (FSOT) that can trap a wide range of bioparticles across different size scales. The innovation enables high-throughput trapping beyond the diffraction limit, conformal operation on curved biological surfaces, and tunable inter-cellular interaction studies.
A recent paper introduces a novel optical neural network architecture that can accurately recognize target objects in the presence of multiple interferences. The system achieves high recognition accuracy across diverse scenarios, including complex settings with dynamic interferences.
Researchers have shown that topology can guide multiple, information-carrying light signals through chip-based photonic communication systems, making them more powerful and reliable. This breakthrough could enable the creation of networks of chips that communicate using light while taking advantage of topology's robustness.
A new technique harnessing Fourier ptychographic microscopy and coherence scanning interferometry provides accurate 3D morphology measurements of high-aspect-ratio micro-trenches. The method achieves high lateral resolution without iterative phase retrieval, enabling robust characterization of complex structures.
A team of international researchers successfully demonstrates time-bin QKD over 120 km with an on-demand telecom semiconductor QD device. The system achieves exceptional stability and maintains high security key rates, making it suitable for real-world text message encryption applications.
Researchers at Osaka Metropolitan University discovered how shifting electric fields control light-emitting efficiency in devices like LEDs. By probing electron spin resonance, they found optimal electric field conditions for efficient recombination, leading to higher electroluminescence efficiency.
Researchers develop an induced fit growth method for Ga-based semiconductor films, enabling controlled thickness and compact surface. The method promises versatile, multifunctional substrates for diverse applications, including optoelectronic devices and neuromorphic computing.
The Harvard researchers' new device is elegantly designed to be tunable, with a bilayer design that becomes geometrically chiral and able to 'read' chiral light. By using the MEMS device to continuously vary the twist angle and interlayer spacing, the team showed they could tune the device's intrinsic ability to read different chiral l...
A team of researchers from SASTRA Deemed University demonstrates a fiber-based method for compressing mid-infrared laser pulses into ultrashort, low-noise bursts efficiently. The system reduces input power from kilowatts to 80 watts, improving energy efficiency and thermal stability.
Physicists at the University of Colorado Boulder have demonstrated a new kind of vacuum ultraviolet laser that is 100 to 1,000 times more efficient than existing technologies. The device could enable scientists to observe phenomena currently out of reach, such as following fuel molecules in real time as they undergo combustion, spottin...
Researchers optimize interferometric diffusing wave spectroscopy technique to boost weak optical field returning from the brain, achieving over 20x signal to noise ratio. The novel approach provides higher brain sensitivity compared to DCS-inspired approaches and is approximately two orders of magnitude less expensive.
Researchers develop Fourier ptychographic coherence scanning interferometry for high-aspect-ratio micro-trenches, achieving high-resolution 3D topography and lateral resolution beyond the incoherent diffraction limit. The method overcomes challenges of strong optical modulation, enabling robust and accurate measurements.
This work demonstrates a synergistic strategy utilizing water molecules and BHT additive to achieve high-quality perovskite films with low defect density, resulting in an unprecedented amplified spontaneous emission threshold of 8.987 μJ cm-2. The dual-triggered film completes ASE intensity retention after 30-day ambient storage.
Researchers summarize advances, challenges, and prospects in light management for all-perovskite tandem solar cells. Strategies focus on minimizing external optical losses and enhancing photon capture capability to improve photon-to-carrier conversion efficiency.
Researchers have directly observed coherence collapse in quantum dot Fabry–Perot lasers, establishing practical design rules for isolator-free photonic integration. The lasers maintain telecom-grade performance even near the coherence collapse boundary.
Researchers have successfully observed and verified a topological Dirac vortex mode in terahertz photonic crystal fibers, enabling ultra-broadband signal transmission with zero polarization dispersion. This breakthrough has promising applications in terahertz sensing, subwavelength-resolution imaging, and distributed quantum networks.
Researchers have developed monolithically integrated III-V membrane photonic crystal lasers on SOI using selective lateral heteroepitaxy, achieving low-threshold single-mode lasing in the telecom band. This approach enables precise control of the active region and simplified fabrication, facilitating efficient and low-cost production.
Scientists create metasurface that reconstructs 3D vectorial holograms with high precision, sculpting both axial intensity and polarization state. The device enables volumetric vectorial holography for secure data encoding, optical computing, and advanced photonic communication.
The proposed OFC-SCR technique enables parallel multi-frequency interrogation, improving measurement speed by over an order of magnitude. It also achieves high frequency response, wide dynamic measurement range, high sensing sensitivity, and excellent robustness, pushing the performance boundaries of distributed fiber-optic acoustic se...
Scientists created an all-optical activation unit using PPLN nanowaveguides to realize nonlinear activation in photonic neural networks. The device delivers high second-harmonic conversion efficiencies and supports data rates beyond 100 GHz.,
Researchers develop interferometric Image Scanning Microscopy (iISM) technique to deliver high-resolution imaging of intracellular structures in live cells without fluorescent labels. The method improves contrast-to-noise ratio and enables faster acquisition speeds, opening new opportunities for studying nanoscale cellular dynamics.