Articles tagged with Photonics
Scientists from UniSA, UoA and Yale University successfully scale up power in fibre lasers by three-to-nine times while maintaining beam quality. This breakthrough could have significant implications for remote sensing, gravitational wave detection and the defence industry.
Researchers at NC State University developed an autonomous system called SmartDope to synthesize 'best-in-class' materials for specific applications in hours or days. It uses a self-driving lab to manipulate variables, characterize optical properties, and update its understanding of the synthesis chemistry through machine learning.
Researchers have developed a new form of microscopy that can probe details in an object's surface using evanescent waves. The technique, which detects radiation emitted by the object itself, has been used to examine thermally excited evanescent waves in dielectric materials with nanoscale precision.
Researchers developed a new OCT approach to directly image coordination of tiny hair-like structures in live organisms, giving a powerful tool to investigate cilia's role in the female reproductive system. The technique revealed unexpected behaviors that contradict current views and suggested new roles for cilia.
A new method called TWC-Swin effectively restores holographic images even under low spatial coherence and arbitrary turbulence, surpassing traditional convolutional network-based methods. The study demonstrates strong generalization capabilities, extending its application to unseen scenes.
Researchers have developed an integrated THz vortex beam emitter to detect rotating targets with remarkable precision. The system uses spiraling electromagnetic waves with orbital angular momentum to accurately measure the speed of a rotating object, with a maximum margin of error of just around 2 percent.
Researchers developed an accelerating wave equation to solve daily phenomena, revealing a well-defined direction of time. The framework also predicts energy conservation in certain situations, including exotic materials.
Researchers develop integrated photonic-electronic hardware capable of processing three-dimensional (3D) data, doubling parallelism for AI tasks and significantly boosting energy efficiency. The new chip can process 100 electrocardiogram signals simultaneously with high accuracy, outperforming electronic processors.
Researchers at Nanjing University have developed a miniaturized FSO system achieving an astonishing 9.16 Gbps bandwidth over 1 km link using readily available commercial fiber transceiver modules. The system enables automatic tracking and precision acquisition, eliminating the need for optical amplification.
Researchers have developed high-speed and high-responsivity photodetectors on a thin-film lithium niobate platform, achieving a 3-dB bandwidth of 110 GHz and responsivity of 0.4 A/W at 1550-nm wavelength. The devices demonstrate potential for ultra-high-speed optical communications and multi-function integrated quantum photonics.
Scientists at the University of Warsaw have developed a device that can convert quantum information between microwave and optical photons, enabling a crucial part of quantum network infrastructure. This breakthrough could lead to advancements in quantum computing, radio-astronomy, and high-speed internet connections.
Researchers at IBS Center for Quantum Nanoscience created a novel electron-spin qubit platform assembled atom-by-atom on a surface, demonstrating ability to control multiple qubits. This breakthrough enables application of single-, two-, and three-qubit gates.
Researchers propose a new way to control moiré flatbands by adjusting the band offset of two photonic lattices, enabling the creation of novel multiresonant moiré devices. This breakthrough opens new opportunities in moiré photonics and promises to inspire future explorations into innovative moiré devices.
A team of scientists at Aalto University has created a bio-based transparent film from lignin nanoparticles, offering an alternative to toxic synthetic materials. The coating can be used on glasses, windshields, and other surfaces, and also displays coloured films with structural colours.
Researchers have developed a material for next-generation dynamic windows that can switch between transparent, infrared-blocking, and tinted modes. The material uses electrochromism and water to achieve this functionality.
Researchers at Chalmers University of Technology have developed a new method to increase the efficiency of microcombs, raising their efficiency from around 1 percent to over 50 percent. This breakthrough enables high-performance laser technology for various applications in space exploration, healthcare, and other industries.
Researchers developed a high-performance photonic spiking neural network that surpasses traditional digital systems with its ultrafast performance and low power consumption. The new network achieved excellent classification accuracies of over 94%, outperforming benchmark results with small training sets.
Researchers have generated nearly deterministic OAM-based entangled states using QDs, enabling hybrid entanglement states in high-dimensional Hilbert spaces. This breakthrough offers a bridge between photonic technologies for quantum advancements.
Researchers at Shanghai Jiao Tong University have developed a new scattering matrix method that can sculpt light output with minimal optimization time. The method offers unparalleled nonlinear scattered light control, enabling high-resolution scanning microscopy and particle trapping through dense, scattering media.
Scientists at Beijing Institute of Technology have developed an ultrafast quasi-three-dimensional technique, enabling higher dimensions to analyze ultrafast processes. This method breaks through the limitations of original observational dimensions, enhancing our ability to analyze ultra-fast processes comprehensively.
A hybrid system of electronic encoding and diffractive optical decoding transmits optical information with high fidelity through random, unknown diffusers. The system outperforms traditional approaches that only utilize a diffractive optical network or an electronic neural network for optical information transfer.
Researchers developed a modified bandit Q-learning algorithm that aims to learn optimal Q values for every state-action pair, balancing exploitation and exploration. The scheme relies on photonic systems to enhance learning quality, accelerating parallel learning through conflict-free decision-making.
The new microscope uses structured illumination and optical fibers to achieve fast super-resolution imaging over a wide field of view, enabling the study of individual cell responses to various drugs. The system can image multiple cells simultaneously with high resolution, providing statistical information about cell response.
Researchers develop a new method to assemble arrays of quantum rods onto patterned DNA scaffolds, enabling precise control over light emission and polarization. This breakthrough could enhance virtual reality devices and microLEDs with improved depth and dimensionality.
Researchers develop low-cost 3D nanoprinting system with nanometer-level accuracy for printing microlenses, metamaterials, and micro-optical devices. The system uses a two-step absorption process and integrated fiber-coupled laser diode, making it accessible to scientists beyond optical experts.
Researchers have developed a new measurement technique that uses the Kramers-Kronig relation to untangle complex helical light patterns from camera intensity measurements. This allows for single-shot retrieval of orbital angular momentum spectrum information, accelerating and simplifying the process compared to conventional on-axis int...
Quantum ghost imaging allows 3D imaging on a single photon level, enabling the lowest photon dose possible. The technique can be applied to image materials and tissues sensitive to light or drugs without risk of damage.
Researchers develop nanofilms that mimic the nanostructures of butterfly wings, creating vibrant colors without absorbing light. These films can be used on buildings, vehicles, and equipment to reduce energy consumption and preserve color properties, with potential applications in energy sustainability and carbon neutrality.
UVA professor Patrick Hopkins is developing a 'freeze ray' technology to cool electronics in spacecraft and high-altitude jets, which can't be cooled by nature due to the vacuum of space. The technology uses heat-generating plasma to create localized cooling, and has been granted $750,000 by the Air Force.
A new complex-domain neural network enhances large-scale coherent imaging by exploiting latent coupling information between amplitude and phase components. The technique reduces exposure time and data volume significantly while maintaining high-quality reconstructions.
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 at Rice University have discovered a metal oxide that can enable terahertz technology for quantum sensing. The material, strontium titanate, exhibits unique properties that allow it to interact strongly with terahertz light, forming new particles called phonon-polaritons.
A novel coupling mechanism involving leaky mode has been uncovered, enabling zero crosstalk between closely spaced waveguides. This discovery drastically increases the coupling length of transverse-magnetic (TM) mode, expanding the potential for dense photonic integration.
Researchers have demonstrated a new approach to photonic packaging using 3D-printed FaMLs, which can be printed with high accuracy to connect optical components. This method relaxes alignment tolerances and enables passive assembly techniques, opening an attractive path towards scalable and flexible photonic system assembly.
Photonic snake states have been discovered, enabling two-dimensional optical rules with unprecedented versatility. This breakthrough enables the development of broadband, reconfigurable devices with real-time frequency comb generation.
Lead-free Cs3MnBr5 anti-perovskite nanocrystals embedded in glass matrices enable tunable emission and ultra-stable X-ray imaging. The results achieve exceptional X-ray detection limits, spatial resolutions, and dose irradiation stability.
Researchers have successfully created photonic time crystals with fast oscillations in refractive index, faster than current theories can explain. This breakthrough has profound implications for the science of light and could enable truly disruptive applications.
The team used a photonic resonator to create a multi-dimensional lattice in the synthetic frequency dimension and measured its band structure. The researchers unveiled properties related to nontrivial eigenvalue topology, which are associated with the non-Hermitian skin effect.
The team's breakthrough enables the production of bright visible-wavelength pulses in the femtosecond range directly with fiber lasers. This advance has significant implications for various fields, including high-precision ablation of biological tissues, two-photon excitation microscopy, and material processing.
Researchers have implemented Orbital Angular Momentum (OAM) as an independent information carrier for optical holography, leading to OAM multiplexed holography. The new design approach, MHC-OAM, uses spatial light modulators to achieve multiramp helical conical beams with different parameters serving as information encryption or decryp...
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.
Researchers have figured out why some air-filled fibre designs work so much more efficiently than others. Dr Leah Murphy and Emeritus Professor David Bird from the University of Bath developed a theoretical understanding of the relationship between fibre structure and leakage loss.
Researchers from the University of Rochester have made an important step toward developing computers advanced enough to simulate complex natural phenomena at the quantum level. They developed a new chip-scale optical quantum simulation system that could help make such a system feasible, using photonics-based synthetic dimensions.
Researchers at Columbia University develop an energy-efficient method for transferring larger quantities of data over fiber-optic cables by using wavelength-division multiplexing and Kerr frequency combs. The new technology improves on previous attempts to transmit multiple signals simultaneously, enabling systems to transfer exponenti...
Researchers developed a compact and efficient single-photon Raman lidar system that can detect oil spills in the ocean. The system uses just 1μJ of pulse energy and can be operated up to 1km underwater, making it suitable for monitoring leaks in underwater oil pipelines.
A research team at CityU developed a multifunctional composite polymer coating with both radiative and non-radiative cooling capacity, enhancing heat dissipation in wearable electronics. The cooling interface achieved temperature drops of over 56°C, improving the performance of skin electronic devices.
Researchers at the University of Sydney have developed a photonic radar system that can accurately detect pauses in breathing patterns remotely. The system has been tested on cane toads and simulated human breathing devices, demonstrating its potential for non-invasive vital sign monitoring in clinical environments.
SUTD researchers created a CMOS-compatible, slow-light-based transmission grating device for high-speed data dispersion compensation. The devices achieved minimal loss and improved error correction performance, paving the way for on-chip integration in transceivers.
New smart pants based on fiber optic sensors can track various types of physical activities in the clinic or at home, detecting signs of distress. The sensing approach achieved 100% accuracy in classifying activities and has several advantages, including low-cost and reliability.
Researchers have developed a method to stabilize the –1 state of boron vacancy defects in hBN, enabling it to replace diamond as a material for quantum sensing and quantum information processing. The team discovered unique properties of hBN and characterized its material, opening up new avenues for study.
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.
A new microcomb device developed by researchers at the University of Rochester offers a promising approach to generating stable microwave signals. The device's high-speed tunability enables applications in wireless communication, imaging, atomic clocks, and more.
Researchers have developed a groundbreaking photonic integrated circuit chip that combines light source, modulator, photodiode, waveguide, and Y-branch splitter on a single substrate. The GaN-on-silicon platform reduces fabrication complexity and cost, enabling compact and high-performing devices.
Researchers have successfully manufactured quantum dots with lattice-matched indium phosphide substrates, emitting in the C-band optical light. This achievement demonstrates potential for manufacturing entangled photon sources, which could be used for secure data transmission.
Scientists have developed a novel photonics system that can measure low-energy dynamics of complex physical phenomena with high time resolution. This breakthrough approach combines terahertz spectroscopy and real-time monitoring to facilitate discoveries in materials science.
Researchers developed a new spectropolarimetric imaging technique called DIP-SP, which integrates a passive polarization modulator into an imaging spectrometer. This approach enables high-dimensional information capture from incomplete measurements and significantly improves image quality.
Researchers at the University of the Witwatersrand have outlined a new optical communication protocol that exploits spatial patterns of light for multi-dimensional encoding without recognizing them. This approach results in over 50 vectorial patterns of light being sent virtually noise-free across a turbulent atmosphere.
The NEHO project aims to create ultrafast and energy-efficient information processing systems using photonics and semiconductor technology. By leveraging nonlinear photon-plasmon interactions, researchers hope to revolutionize information processing with faster, more efficient, and flexible technologies.
Researchers developed a system to transmit high-capacity terahertz-wave signals to different locations using direct terahertz-optical conversion and fiber-wireless technology, achieving 32 Gb/s capacity. The system overcomes radio communications limitations in the terahertz band, expanding communication coverage.
Optical memristors have the potential to transform high-bandwidth neuromorphic computing, machine learning hardware, and artificial intelligence. However, scalability is a significant challenge that needs to be addressed to unlock their full potential.