Articles tagged with Photonics
Researchers develop new method to evaluate telescope performance before installation, enabling better optimization and reduced scattering. This approach uses near-field radio holography to map the optics at cryogenic temperatures, improving signal-to-noise ratio and ensuring accurate space observations.
Researchers at the University of Ottawa have developed a new technique to differentiate the mirror images of a chiral molecule, a problem that was believed to be unsolvable for nearly 20 years. The team used linear polarized helical light beams to enhance sensitivity and observed differential absorption in achiral molecules.
A new study developed a traveling-wave amplifier based on a photonic integrated circuit operating in the continuous regime, providing 7 dB net gain on-chip and 2 dB net gain fiber-to-fiber. This achievement enables unlimited application areas for LiDAR and other optical sensing applications.
Researchers at MIT have developed a new architecture for optical neural networks, which can perform complex linear algebra operations using light signals. The new design eliminates uncorrectable errors that limited the scalability of earlier systems, enabling larger networks with improved accuracy.
A research team developed an optical chip that can train machine learning hardware, improving AI performance and reducing energy consumption. This innovation uses photonic tensor cores and electronic-photonic application-specific integrated circuits to speed up the training step in machine learning systems.
Researchers at Penn Engineering have created a chip that outstrips existing quantum communications hardware, communicating in qudits and doubling the quantum information space. The technology enables significant advances in quantum cryptography, raising the maximum secure key rate for information exchange.
A team of researchers has successfully controlled individual photons on a chip with unprecedented precision, enabling the development of hybrid quantum technologies. By harnessing nanoscale soundwaves, they can switch photons between two outputs at gigahertz frequencies, paving the way for secure quantum communication networks.
Researchers at HKUST have developed a novel integration scheme using lateral aspect ratio trapping (LART) to efficiently couple III-V lasers and photodetectors with silicon on silicon photonics platform. This breakthrough enables the integration of energy-efficient photonics with cost-effective electronics.
Researchers have demonstrated a power-efficient component for demultiplexing operation using silicon photonic MEMS, enabling efficient wavelength demultiplexing for fiber-optic communications. The compact footprint of the add-drop filter allows fast operation compared to established MEMS products.
Researchers have developed a unique anapole probe to measure photonic spin structures, enabling advancements in spin photonics. The probe can characterize topological spin properties associated with magnetic fields, opening doors for applications like data storage and metrology.
Researchers develop hybrid brightfield-darkfield transport of intensity approach, expanding accessible sample spatial frequencies and achieving 5-fold resolution increase. This method enables precise detection and quantitative analysis of subcellular features in large-scale cell studies.
Scientists demonstrate dynamic scalar optical hopfions, proposing a method to encode and transfer topological information. The discovery may spur interest in exploring novel methods for light-matter interaction and optical manipulation.
Researchers developed a novel method to create deep nanochannels in hard and brittle materials like silica, diamond, and sapphire. By employing femtosecond laser direct writing technology, they achieved sub-100-nm feature sizes and ultrahigh aspect ratios.
Researchers at Sandia Labs have successfully built a compact, rugged quantum inertial sensor that can guide vehicles without satellites. The device uses advanced materials and integrated photonic technologies to achieve high accuracy and miniaturization.
Researchers from University of Warsaw create spiking neuron using photons to mimic biological brain's behavior. This achievement paves the way for photonic neural networks that process information faster and more efficiently than conventional systems.
Researchers at MIT have developed a new method that uses optics to accelerate machine-learning computations on low-power devices. By encoding model components onto light waves, data can be transmitted rapidly and computations performed quickly, leading to over a hundredfold improvement in energy efficiency.
Researchers developed a new technique using femtosecond laser pulses to fabricate precision ultrathin mirrors for space telescopes. The method can help correct errors in mirror fabrication and enable sharper images of astronomical x-rays.
Physicists have developed a new photonic system with electrically tuned topological features, constructed of perovskites and liquid crystals. The system can be used to create efficient and unconventional light sources, mimicking the spin-orbit coupling previously observed in semiconductor physics at cryogenic temperatures.
Researchers developed a low-cost, simple imaging system using tumor-targeting fluorescent molecules to determine tumor depth. The portable system provides quantitative information about the depth of tumor cells in the body, helping surgeons remove healthy tissue around tumors for better outcomes.
Scientists from Paderborn and Ulm universities create a programmable optical quantum memory, enabling the efficient growth of large entangled states. This breakthrough milestone brings researchers closer to practical applications of useful quantum technologies.
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.
The researchers used a new technique to capture the first cross-sectional images of carbon dioxide in the exhaust plume of a commercial jet engine. The images show a ring-structure of high carbon dioxide concentration and a raised region in the middle of the plume.
Researchers have developed a simplified and fast optoretinography approach to measure retinal function, potentially accelerating the development of new treatments for eye diseases. The technique can collect data from three healthy subjects in just ten minutes and has been demonstrated to be reproducible.
Researchers have developed a flexible endoscopic imaging probe using a bendable graded index (GRIN) lens, enabling 3D microscopic imaging of tissue. The new technology could shorten biopsy waiting times to minutes and enable real-time monitoring of tissue changes.
Researchers created silicon nanopillars using MacEtch, a wet etching technique that generates light particles at the right wavelength to proliferate in optical fibers. This breakthrough enables practical quantum communication via optical fibers.
The article discusses recent advances in self-assembled liquid crystal architectures for soft matter photonics, including smart displays, optical imaging, and light field modulation devices. The review highlights the potential of these materials for broadening knowledge and promoting diverse photonic applications.
Researchers developed a new analytical instrument using an ultrafast laser to measure hydrogen concentration and temperature, advancing greener hydrogen-based fuel studies. The instrument's capabilities will help develop more environmentally friendly propulsion engines.
A novel 937-nm laser source has been developed for multiphoton microscopy, enabling deep tissue imaging at depths of over 600 µm with only 10 mW of power. This breakthrough technology offers a good balance between sensitivity, penetration depth, and imaging speed.
Researchers developed a thin lens with a continuously tunable focal length to alleviate vergence-accommodation conflict in AR/VR devices. The Alvarez lens can change focus continuously within a large range while being compact and lightweight.
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.
The report explores diffuse optical imaging methods applicable to noninvasive human studies, including near-infrared spectroscopy (NIRS) and diffuse correlation spectroscopy (DCS). It introduces state-of-the-art technologies and software, exploring their impact on neuroscience and clinical applications.
A new bidimensional semiconductor shows the highest nonlinear optical efficiency over nanometer thicknesses, enabling smaller devices with potential for compact phase-matched and waveguided nonlinear optics.
The study reveals that noise sources in the micro resonator can cause the lines to be narrower than previously thought, enabling more precise measurements. By understanding this phenomenon, researchers can develop even more accurate devices, such as instruments measuring signals at light-years distances.
A novel light-manipulating technology using nanodisk periodic structures has been developed by an international team, including Kyoto University. By controlling bound states in the continuum, researchers can systematically control light distribution states and manipulate near-infrared light within a nanodisk.
Researchers developed a technique for controlling ENZ media by introducing multiple dielectric rods, called photonic dopants. This allows for independent control of responses at specific frequencies, enabling applications such as optical tagging and digitally reconfigurable filters.
A new study demonstrates bound vortex light on optical chips by simulating gauge fields of cosmic strings. The research team created a deformed photonic graphene inspired by cosmic strings, which can generate and transport optical vortices and control photon orbital angular momentum.
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 developed a new method for converting light frequencies using atomically thin layers of molybdenum disulfide, enabling smaller lasers and potential applications in optical communications. The breakthrough could lead to compact phase-matched nonlinear optics and waveguide devices.
Researchers developed a novel biologically-inspired intraoral camera with a wide-angle insect eye structure, increasing field of view and resolving optical aberrations. The device provides multifunctional dental imaging, including high dynamic range, 3D depth, and autofluorescence, without discomfort or image blur.
Researchers demonstrate a compact QKD system that paves the way for cost-effective satellite-based quantum networks. The system successfully distributes secure keys between a space lab and four ground stations, representing an important step toward practical QKD networks.
The UW Photonic Sensing Facility uses fiber-optic sensing technology to detect ground motions as small as 1 nanometer for seismology, glaciology, oceanography, and infrastructure monitoring. The new center will expand seismic data collection by thousands of times.
Researchers developed a label-free Raman spectroscopy approach with enhanced sensitivity and speed, allowing for non-invasive imaging of biological samples. The new CARS microscopy system can acquire microscopic images and identify biomolecules with unprecedented resolution and speed.
Researchers have developed a method to create colorful solar panels by applying a thin layer of photonic glass, which reflects selective colors based on microscopic zinc sulfide spheres. The new technology results in energy efficiency improvements of up to 21.5% while maintaining color and durability.
The €15.7 million AUFRANDE project aims to generate industry-relevant research by employing 64 early career doctoral researchers from French and Australian universities. Researchers will receive training and support, including annual workshops and group events, to foster high-performing early-stage researchers.
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.
A new light-based sensor harnesses the light-guiding properties of spider silk to detect and measure small changes in the refractive index of a biological solution, including glucose and other types of sugar solutions. The sensor is practical, compact, biocompatible, cost-effective, and highly sensitive.
Researchers developed a new printing technique that applies a 19th-century color photography method to modern holographic materials, producing large-scale images on elastic materials with structural color. The team's results enable the creation of pressure-monitoring bandages, shade-shifting fabrics, or touch-sensing robots.
A newly developed polarizer-embedded metalens microscope system achieves high-quality, wide-field imaging with a large depth-of-field, significantly expanding human eyesight to the microworld. The chip-scale device offers a thousand-fold reduction in volume and weight compared to traditional microscopes.
Researchers have created a photoacoustic imaging endoscope probe that can fit inside a medical needle, resolving subcellular-scale tissue structural and molecular information in 3D. The device has an ultra-thin design, allowing for real-time 3D characterization of tissue during minimally invasive procedures.
Researchers have created a new glass-ceramic that emits light in response to mechanical stress, enabling potential applications for monitoring stress in artificial joints and structures.
Researchers propose a novel paradigm using nanoscale nonlinear fluid dynamics to support recurrent neural networks in neuromorphic computing. The liquid film functions as an optical memory, enabling 'reservoir computing' capable of performing digital and analog tasks.
A new broadband near-field chiral source enables comparison of different edge states to advance applications in integrated photonics and wireless devices. The research advances the field of chiral photonics science, promoting applications of chiral-sorting technology for microwave metadevices.
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 topological membrane metadevices for on-chip terahertz wave manipulations, showcasing robust single-mode manipulation and valley-locked edge states. This breakthrough enables the development of a robust platform for terahertz on-chip communication, sensing, and multiplexing systems.
The study compares the behavior of flat (1D), cylindrical (2D) and spherical (3D) micromirrors for free-space light coupling. Silicon micromirrors were fabricated and used to experimentally validate the coupling efficiency in visible and near infrared wavelengths.
Researchers from Politecnico di Milano have developed a programmable photonic processor that can separate and distinguish optical beams even if they are superimposed. This device allows for high-capacity wireless communication, with transmission rates of over 5000 GHz.
Researchers developed a novel frequency-domain method to selectively suppress background noise in STED microscopy, achieving higher spatial resolution and improved signal-to-noise ratio. The approach has potential applications in various dual-beam point-scanning techniques.
A team of researchers at Osaka University measured the photovoltaic properties of antimony sulfiodide:sulfide devices and discovered a novel effect. They found that changing the color of incident light from visible to ultraviolet induced a reversible change in output voltage, while leaving current unchanged.
Researchers develop speckle-based compressive imaging technique to improve deep-tissue imaging in Alzheimer's disease studies. The method reduces pixel measurements needed, producing high-resolution images up to 11 times faster and three times bigger than traditional raster-scan approach.
Researchers developed an automated method to create 3D images of leaked gas clouds, enabling precise location, volume, and concentration determination. This technology can provide early leak warnings, assess risk, or determine the best way to fix leaks in large facilities with stored toxic chemicals.