Articles tagged with Optics
Researchers at Macquarie University developed a new technique to narrow laser linewidth by factors exceeding 10,000 using diamond crystals and Raman scattering. This breakthrough could revolutionize quantum computing, atomic clocks, and gravitational wave detection with improved spectral purity.
Researchers developed misaligned bilayer metagratings to overcome intrinsic dispersion locking, enabling precise angular and wavelength control. This breakthrough offers new opportunities for compact optical imaging and computing technologies.
Researchers develop flexible/stretchable displays using ECLDs, which offer lightweight and intelligent wearable devices. The study explores material selection principles, preparation processes, and applications for ECLDs, highlighting the potential for multi-color displays and wearables.
The Uncertainty-Aware Fourier Ptychography (UA-FP) framework offers a highly robust and flexible solution for computational imaging, overcoming traditional calibration constraints. It can maintain reliable performance even when confronted with substantial physical imperfections, setting a new standard for the field.
Researchers have developed highly polycrystalline WxV1-xO2 films that exhibit exceptional dynamic radiative properties, paving the way for innovative thermal management systems. The films can modulate infrared radiation in response to temperature changes, allowing buildings and devices to optimize heat loss or retention adaptively.
Rice University professor Lei Li has received a NSF CAREER Award to develop wearable medical imaging technology capable of visualizing deep tissue function in real time. The project aims to miniaturize hospital-grade imaging systems into compact, energy-efficient wearables.
Researchers introduce a novel method for generating topological optical textures using simple photonic crystal slabs, leveraging BICs to achieve alignment-free and high-fidelity topological light generation. This discovery paves the way for practical applications in communication, sensing, and data processing.
Operando ZnO recrystallization improves device performance by reducing carrier concentration and enhancing electron mobility, leading to increased EQE in red QLEDs. This process also suppresses exciton quenching within the quantum dot layer.
A custom CNN trained on synthetic datasets decomposes modes in multimode fiber, eliminating coherent detection. This approach achieves high frame rates and low power consumption with FPGA acceleration.
Researchers developed a novel platform addressing limitations of conventional plasmonic systems, enabling large-area high-brightness emission at low power. The breakthrough paves the way for future display and optical communication technologies.
Professor Roberto Morandotti has won the 2025 IEEE Photonics Society Quantum Electronics Award for his groundbreaking research on entanglement generation and processing of complex quantum states in photonic devices and systems. His work at INRS's Ultrahigh Speed Light Manipulation Laboratory has led to numerous patents and collaboratio...
A nanometer-thin spacer layer has been inserted into exciplex upconversion OLEDs (ExUC-OLEDs) to improve energy transfer, enhancing blue light emission by 77-fold. This design enables the use of previously incompatible materials, paving the way for lightweight, low-voltage, and more flexible OLEDs.
Researchers at EPFL's Bionanophotonic Systems Laboratory developed a biosensor that detects biomolecules using inelastic electron tunneling, enabling ultra-sensitive and real-time detection without bulky equipment. The sensor can detect amino acids and polymers at picogram concentrations, rivaling advanced sensors.
Researchers from Hunan University uncover buildup dynamics of harmonic mode-locking in fiber-based Mamyshev oscillators, achieving high stability and signal-to-noise ratio. The study identifies five distinct phases in the generation of stable harmonic mode-locking, challenging conventional understanding of laser emission.
The latest issue of Optica Quantum features research on cryogenic photonic links for superconducting qubits, spatio-spectral quantum state estimation of photon pairs from optical fiber, and quantum optical reservoir computing powered by boson sampling. These studies demonstrate breakthroughs in measuring and optimizing quantum states, ...
Scientists at Rice University have developed a scalable method to create high-performance single-photon emitters in carbon-doped hexagonal boron nitride, paving the way for practical quantum light sources. The findings overcome long-standing challenges in the field and set a new benchmark for qubit production.
Researchers developed a new method to estimate PN junction depth in Si wafers with nanometer scale resolution, using terahertz emission spectroscopy. This technology enables rapid, non-destructive, and non-contact access to the interior of wafers, contributing to improving device reliability and reducing manufacturing resources.
Scientists from Institute of Science Tokyo create photo-switchable binding of DNA nanostructures that generate two distinct directional motions. The research paves the way for innovative fluid-based diagnostic chips and molecular computers.
Researchers observe anomalous saturable absorption behavior in CsPbBr3 thin films under sub-bandgap excitation, revealing a new mechanism for ultrafast nonlinear optical absorption. The study proposes that band energy fluctuations induced by lattice polarons enable polaronic states to facilitate saturable absorption.
A research team from Tampere University and Université Marie et Louis Pasteur has demonstrated a novel way to process information using light and optical fibers. The study used femtosecond laser pulses and an optical fiber to mimic the processing of artificial intelligence, achieving accuracy of over 91% in under one picosecond.
The UCLA team introduces a framework for arbitrary 3D point spread function engineering, enabling adaptive optical imaging systems with precise control of light distribution in three dimensions. This development has significant implications for advanced imaging modalities, such as snapshot 3D multispectral imaging.
Researchers at Aston University have developed a new class of ultralow loss optical microresonators that can be widely tunable and precisely controlled. The devices, formed at the intersection of two optical fibers, hold potential applications in communication, computing, sensing and more.
MIT researchers create a novel AI hardware accelerator that performs machine-learning computations at the speed of light, classifying wireless signals in nanoseconds. The photonic chip is scalable, flexible, and energy-efficient, making it suitable for future 6G wireless applications.
The Rice University team created a soft robotic arm capable of performing complex tasks using smart materials, machine learning, and an optical control system. The arm is guided and powered remotely by laser beams without any onboard electronics or wiring.
Researchers have developed glass-epoxy-based waveguides with low polarization-dependent loss and differential group delay, suitable for stable signal transmission in co-packaged optics. The waveguides demonstrated high power stability and reliability under six hours of continuous use.
Researchers used AI to approach the fundamental limit of precision in optical methods, calculated using Fisher information. The team's algorithm achieved impressive results, only minimally worse than the theoretically achievable maximum, demonstrating its effectiveness.
Researchers demonstrate a novel system for neuromorphic computing utilizing perovskite microcavity exciton polaritons operating at room temperature. The system achieves high-speed digit recognition with 92% accuracy using only single-step training, opening new opportunities for scalable and light-driven neural hardware.
Researchers at ETH Zurich have developed a new method for fabricating ultra-thin metalenses using lithium niobate nanostructures. These devices can convert infrared light to visible radiation, enabling new applications in security, microscopy, and electronics.
Dr. Jonas Ohland will lead the ALADIN project to develop stable, efficient lasers for inertial confinement fusion. The goal is to improve beam guidance and reduce manual intervention, benefiting not only fusion research but also other high-power laser applications.
Researchers have developed a new laser device smaller than a penny that can conduct extremely fast and accurate measurements by precisely changing its color across a broad spectrum of light. The laser has applications ranging from guiding autonomous vehicles to detecting gravitational waves, a delicate experiment to observe our universe.
A team of physicists has developed a new quantum sensor that can detect vectorial magnetic fields with large dynamic range and multi-axis capabilities. The sensor is based on spin defects in hexagonal boron nitride, a two-dimensional material that offers new degrees of freedom compared to existing nanoscale sensors.
Researchers developed a metalens-based microscope that achieves both wide field of view and high-resolution imaging in a compact design. The system uses a doublet configuration and annular illumination to overcome traditional metalens limitations, enabling practical applications in biomedical imaging.
Researchers developed a multilayer device with high absorptivity in H/K bands and low emissivity in MWIR/LWIR bands, while utilizing VLWIR for efficient radiative heat dissipation. The device successfully concealed thermal radiation and reflected signals, achieving significant temperature reductions.
Scientists have developed a groundbreaking adaptive optics system that removes blur from images of the Sun's corona, revealing clearest images to date. The technology has produced remarkable observations of fine-structure in the corona, including raindrops and turbulent internal flows.
Researchers have developed a novel approach to achieve high-speed data transmission over long distances using platicon frequency microcombs. The technology demonstrates stable terabit/s coherent optical communication in free-space links, overcoming previous challenges such as beam stabilization and phase recovery. This breakthrough sup...
Researchers have introduced a novel class of three-dimensional topological structures, 'incoherent links and knots', constructed from coherence singularities. Despite the random distribution of the instantaneous electric field, these structures exhibit stable topological configurations.
Researchers have demonstrated a cryogenic circuit that allows light quanta to be controlled more quickly than ever before, reducing delay by a quarter of a billionth of a second. This breakthrough could contribute to developing modern technologies in quantum information science and communication.
A portable and highly sensitive ethanol sensor has been developed using a copper-based metal–organic framework thin film, enabling precise optical measurements without complex lab equipment. The sensor can visually detect varying ethanol levels, even at low concentrations, and can be integrated with a smartphone app for easy use.
Researchers have developed a new technique called electro-optic sampling that uses ultrashort laser pulses to probe electric fields in crystals. This allows for the accurate capture of molecular spectra and detection of faint signals, providing profound insights into quantum physics.
A new imaging system can capture high-quality still images of rotating objects in real-time, enabling early detection of wear or damage. The system uses a single-pixel detector and structured illumination to overcome challenges of traditional cameras.
Researchers propose a novel in-situ chlorination post-treatment method to renovate defects and reconstruct phase structure, enhancing optoelectronic performance. Deep-blue LEDs achieved an external quantum efficiency of 6.17%, demonstrating faster carrier transport and increased operational stability.
This special issue highlights cutting-edge developments in subwavelength optics, including nonlinear meta-devices, chiral optical signals, and hybrid-layer data storage. Researchers explore new phenomena at the subwavelength scale, enabling enhanced imaging, sensing, and communication capabilities.
Researchers have developed a monolithically integrated asynchronous optical recurrent accelerator, mapping time sequences to wavelength channels for efficient parallel processing. This breakthrough improves computational efficiency without requiring high-speed electronic components for synchronization.
Researchers successfully integrated femtosecond-pulse VSFG spectroscopy with scanning tunneling microscopy (STM) to detect VSFG signals from molecules in nanoscale gaps. Phase analysis revealed molecular orientation, and the technique's spatial confinement enabled detection of signals from a limited number of molecules.
Researchers developed a three-dimensional varifocal meta-device to address AR display challenges, including vergence-accommodation conflict. The device dynamically adjusts focal length and position using tunable metasurfaces, enabling virtual content display at different depths and positions without bulky components.
KAIST researchers developed a highly sensitive mid-infrared photodetector that operates at room temperature, enabling low-cost mass production and real-time sensing of various molecular species. The technology has potential applications in environmental monitoring, medical diagnostics, and industrial process management.
Researchers at Pohang University of Science & Technology (POSTECH) have developed an achromatic metagrating that handles all colors in a single glass layer, eliminating the need for multiple layers. This breakthrough enables vivid full-color images using a 500-µm-thick single-layer waveguide.
Researchers at University of Rochester and RIT created an experimental quantum communications network to transmit information securely over long distances. The network uses single photons to enable secure communication without cloning or interception.
Researchers have developed a single-layer antireflective coating using polycrystalline silicon nanostructures that sharply reduces sunlight reflection across a wide range of wavelengths and angles. The coating achieves unprecedented results for a single-layer design, setting a new standard for solar cells.
Amsterdam physicists found that asperities on two touching surfaces interact similarly to pedestrians at a crossing, leading to an increase in surface sliding and decrease in static friction. This phenomenon has applications in semiconductor manufacturing and earthquake prediction.
The Photonics M3 conference focuses on manufacturing, manipulation, and measurement of photonic devices. Key topics include information optics, biomedical optics, meta optics, and advanced optical fabrication. The conference will be held at Tsinghua Southeast Asia Center in Bali, Indonesia.
Researchers at Ateneo de Manila University create hydrophobic surfaces using electrospun polymer fibers to hold water droplets in a dome shape, allowing for dynamic adjustment of magnifying power. This discovery has potential practical applications in science classrooms, remote areas, and research labs.
A new method for DNA detection uses heterogeneous probe particles and laser light to accelerate genetic analysis. This PCR-free technique offers greater sensitivity and speed than traditional methods, making it more accessible for medical, environmental, and personal health applications.
Researchers developed fluorescent polyionic nanoclays that can be customized for medical imaging, sensor technology, and environmental protection. These tiny clay-based materials exhibit high brightness and versatility, enabling precise tuning of optical properties.
Physicists at Harvard SEAS have created a compact, on-chip mid-infrared pulse generator that can emit short bursts of light without external components. This device has the potential to speed up gas sensor development and create new medical imaging tools.
Harvard physicists develop an optical vortex beam that twists and changes shape, resembling spiral shapes found in nature. The 'optical rotatum' has potential applications in controlling small particles and micro-manipulation, and its creation is made possible with a single liquid crystal display.
Researchers have directly observed a superradiant phase transition (SRPT) in a magnetic crystal, overcoming a long-standing limitation in theoretical physics. The phenomenon occurs when two groups of quantum particles fluctuate collectively without external triggers, forming a new state of matter with unique properties.
A new amplifier developed by Chalmers University of Technology can transmit ten times more data per second than current systems, holding significant potential for various critical laser systems, including medical diagnostics and treatment. The amplifier's large bandwidth enables precise analyses and imaging of tissues and organs.
A new bilayer metasurface, made of two stacked layers of titanium dioxide nanostructures, has been created by Harvard researchers. This device can precisely control the behavior of light, including polarization, and opens up a new avenue for metasurfaces.
Researchers at the University of Arizona have developed a new 3D imaging technique, deflectometry, paired with advanced computation to improve eye-tracking accuracy. The method can capture gaze direction information from more than 40,000 surface points, theoretically millions, increasing accuracy by a factor of over 3,000 compared to c...