Researchers have developed high-performance ultrafast lasers on nanophotonic chips, enabling compact devices for GPS-free precision navigation, medical imaging, food safety inspection and other applications. The new technology has the potential to enable futuristic chip-scale atomic clocks, biological imaging and more.
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 at CUNY Graduate Center design stadium-shaped cavity to study and control light's complex behavior. By adjusting light intensity and delay, they demonstrate coherent control using reflectionless scattering modes, paving the way for better energy storage, computing, and signal processing.
Scientists at the University of Nebraska-Lincoln have developed a system that can adjust the size, shape, and refractive index of microscopic lenses in real-time. The design uses hydrogels and polydimethylsiloxane to create a dynamic platform for soft robotics and liquid optics applications.
Researchers create practical way to implement superlensing with minimal losses, breaking through diffraction limit by nearly four times. The method allows scientists to improve super-resolution microscopy, advancing imaging in fields like cancer diagnostics and archaeology.
Osaka University researchers created a radial-coded mask that replaces conventional masks, yielding sharp images at various distances. The optimized mask design extends the depth of field, enabling better focus on both foreground and background objects.
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.
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 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.
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.
Researchers have created a 19-core optical fiber with a standard cladding diameter, achieving a record transmission capacity of 1.7 petabits per second over 63.5 km. This design uses randomly coupled multi-core fibers and MIMO digital signal processing to minimize power consumption.
Researchers demonstrate probabilistic computing's capabilities by simulating networks of stochastic nanodevices to solve specific NP problems. The simulations agree with theoretical solutions, indicating the potential for scaling up this approach.
Scientists have created a novel method to fabricate miniature optical fibers (MNFs) with high precision and minimal loss. The technique utilizes plasmonic heaters embedded in metal plates to heat the fibers, eliminating the need for bulky components like translation stages or flame burners.
Researchers developed a miniaturized viscometer using GaN optical device and bendable strip, achieving an ultra-wide viscosity range of 10^0 - 10^6 mPa·s. The viscometer demonstrated real-time monitoring capabilities and low sample consumption, making it suitable for practical applications.
Researchers from University of the Witwatersrand developed a new approach to studying complex light in complex systems. They found distortion-free forms of structured light that emerge undistorted from noisy channels, unlike other forms of structured light which become unrecognizable. This breakthrough has the potential to pave the wa...
Researchers developed a self-powered nanowire sensor that can detect nitrogen dioxide in the air without power source. The sensor has potential applications in environmental monitoring, healthcare, and industrial safety.
Researchers at the University of Tsukuba have developed an optoelectronic resonator that enhances the sensitivity of an electron pulse detector, allowing for ultrafast electronic characterization of proteins or materials. This breakthrough may aid in the study of biomolecules and industrial materials.
Researchers at Chalmers University have developed an optical hydrogen sensor that can detect extremely low levels of hydrogen, allowing for early detection and alarm. The sensor uses AI technology to optimize particle arrangement and geometry, achieving sensitivity in the parts per billion range.
Researchers studied diatom shells to understand how they perform photosynthesis in low-light conditions. They found that the frustule can contribute a 9.83% boost to photosynthesis, especially during transitions from high to low sunlight.
Scientists successfully transmit and switch 15-mode multiplexed signals over a 6.1 km long multi-mode fiber ring in Italy, demonstrating a new approach to increasing fiber network capacity. This achievement is significant for future communication systems beyond 5G.
Harvard scientists create a high-performance on-chip femtosecond pulse source using a time lens, enabling broadband, high-intensity pulse sources. The device is highly tunable, integrated onto a small chip and requires reduced power compared to traditional table-top systems.
Researchers demonstrate world's first 55-mode transmission at 1.53 petabits per second, outperforming previous records by three times in spectral efficiency. The technology holds promise for future high-capacity backbone networks and the development of Beyond 5G infrastructure.
Researchers at MIT have developed a new approach to identify topological materials using machine learning and X-ray absorption spectroscopy. The method is over 90% accurate in identifying known topological materials and can predict properties of unknown compounds.
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.
Researchers developed a silicon photodiode array for in-sensor processing, allowing for real-time image filtering and extraction of relevant visual information. The technology has potential applications in machine vision, bio-inspired systems, and intelligent imaging devices.
Customized fibers have been engineered to generate Bessel beams, opening up new applications in imaging and communications. The fibers use a technique called two-photon lithography to fabricate special beam-shaping elements, enabling the creation of compact Bessel beam generators.
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 at City University of Hong Kong have successfully developed a novel Vacuum Ultra-Violet (VUV) meta-lens, which can generate and focus the VUV light. The focused VUV light source enables nanolithography, material processing, and advanced manufacturing applications.
Recent research reviews progresses in miniaturized spectrometers, focusing on integrated spectrometers with CMOS-compatible integration platforms. The authors establish performance benchmarks and discuss technological advancements in wavelength de-multiplexing and multiplexing-based spectrometers.
Researchers from NICT demonstrated a record-breaking 1.02 petabit per second transmission capacity in a 4-core MCF with a standard 0.125 mm cladding diameter, exceeding 20 THz optical bandwidth with 801 parallel wavelength channels.
Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences have developed a single-material diamond mirror that withstood a 10-kilowatt Navy laser without damage. The mirror's unique nanostructure design makes it 98.9% reflective, potentially enabling more robust high-power lasers for various applications.
A new approach using artificial intelligence generates designs automatically, allowing researchers to create complex metasurfaces with billions of nanopillars. This enables the development of larger, more complex metalenses for virtual reality and augmented reality systems.
Researchers proposed and experimentally demonstrated an all-optical random bit generation method using chaotic pulses quantized in the optical domain. This method generated a 10 Gb/s random bit stream, potentially operable at higher rates by exploiting ultrafast fiber response.
Scientists at IIT realized coupled light vortices forming an ordered structure, a light crystal. They developed metasurfaces to control laser beams and created 100 light vortices with tunable topology, enabling new properties for optical communications and simulations of complex systems.
Scientists at Stanford University have created a stretchy display that can change shape in response to user interaction. The display uses elastic light-emitting polymers and has a maximum brightness two times that of a typical cellphone, allowing it to be stretched up to twice its original length without tearing.
Scientists have created a flexible, multipoint microLED array film that enables simultaneous optical stimulation at specific or multiple regions in the brain. The technology has potential broader applications in neuroscience research and could lead to new understanding of brain function and behavior.
Researchers developed a metasurface attachment that can turn any camera into a polarization camera, capturing light's polarization at every pixel. This innovation benefits various fields like face recognition, self-driving cars and remote sensing, revealing hidden details and features.
Researchers created a dental tool that measures plaque acidity using an LED light and FDA-approved chemical dye, providing dentists with early warning signs of cavity development. The device can help limit the need for specific harmful bacteria tests and educate patients about sugar's impact on oral health.
Researchers at Penn State developed a computational optimizer to design a 3D unit cell with cube-shaped cavities that enables asymmetric transmission of linearly polarized light across a wide frequency range. The optimized design was successfully fabricated and tested, demonstrating robust optical properties.
Researchers have discovered a new material, α-MoO3, that can be used to create invisibility concentrators with improved performance and lower production costs. The study suggests the use of α-MoO3 to control energy flow and scatter light, enabling the creation of devices with near-perfect invisibility.
Femtosecond laser precision engineering enables micro/nano-structure creation with high resolution and dry processing. Key challenges include achieving small heat affected zones and ensuring sufficient processing speeds for industrial needs.
On-chip frequency shifters in the gigahertz range enable precise color shifting for high-speed optical communication. This innovation has significant implications for the development of quantum computers and future network infrastructure.
A clinical study found that severe COVID-19 patients exhibit impaired microvascular function, which correlates with disease severity. Non-invasive near-infrared spectroscopy monitoring may help predict disease course and select responders to novel therapies.
Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences have developed a simple spatial light modulator made from gold electrodes covered by a thin film of electro-optical material. This device can control light intensity and pixel by pixel, enabling compact, high-speed, and precise optical devices.
George Mason University Assistant Professor Zhisheng Yan is leading a project to create augmented 360-degree video for firefighters, enabling remote commanders to visualize the entire emergency scene in all directions. The research aims to enhance firefighting productivity and safety by providing panoramic visual cognition.
A portable optical sensor system could diagnose traumatic brain injury severity in the field from a single drop of blood, potentially reducing costs and improving treatment outcomes
Researchers developed a precise stopwatch to count single photons, enhancing imaging technologies like forest mapping and disease diagnosis. The new time lens technology improves photon timing resolution by orders of magnitude.
Researchers at Harvard SEAS have demonstrated a new way to control polarized light using metasurfaces, enabling holographic images with an unlimited number of polarization states and manipulation in virtually infinite directions. This advancement could lead to applications in imaging, microscopes, displays, and astronomy.
Researchers at Aalto University have discovered that fibrous red phosphorous, when electrons are confined in its one-dimensional sub-units, shows large optical responses. The material demonstrates giant anisotropic linear and non-linear optical responses, as well as emission intensity.
Researchers developed the first transparent fiber–millimeter-wave–fiber system in the 100-GHz band using a low-loss broadband optical modulator with direct photonic down-conversion. The system successfully demonstrated high-speed transmission of over 70 Gbit/s over a wired and wireless converged system.
Researchers at Penn State have developed new methods to enhance light emission and increase signal strength in 2D materials. By altering the atomic makeup and physical shape of these materials, they created new types of materials that can attract different molecules and induce superconductivity. These advancements have significant impl...
Researchers create a device that displays directionally asymmetric reflective colors based on viewing direction, enabling information encryption via optical camouflage. The design allows for bidirectional display of tuneable messages/images, opening up new photonic applications.
Dr. Koby Scheuer's plastic-based technology uses nano-sized grooves to filter noise from information in optical devices, making them smaller, more flexible, and powerful.
University of Florida engineers have successfully installed a tiny on-chip antenna, enabling radio communication across distances of up to 16 feet. The achievement marks a significant step towards building an 'ultrasmall radio chip' for various applications, including border security and bridge monitoring.