Articles tagged with Applied Optics
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 programmable color router array is designed to manipulate photon momentum in multi-frequency channels, enabling efficient spectrum utilization and encryption. The device utilizes dichromatic photon momentum and beam intensity to promote information processing ability, increasing capacity based on frequency-dependent angular measu...
A research group at Chuo University has developed an all-printable device fabrication strategy to overcome technical limitations of multi-functional image sensor sheets. The new technique accurately prints carbon nanotube channels and integrates other constituents into single devices, facilitating non-destructive monitoring.
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.
Scientists at UC Riverside are investigating plasmonic materials that can transfer energy when struck by light. Their findings could lead to sensors capable of detecting molecules at trace levels and other technologies with practical applications.
Researchers from Vienna University of Technology successfully reproduced the Terrell-Penrose effect using laser pulses and precision cameras, demonstrating the relativistic length contraction and its impact on perceived rotation. The experiment uses a novel technique inspired by art to recreate the effect in the laboratory.
Researchers can now study microstructures inside metals, ceramics, and rocks with X-rays in a standard laboratory without needing a particle accelerator. The new technique, lab-3DXRD, enables quick analysis of samples and prototypes, providing more opportunities for students.
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.
Scientists studied charge transport through organic light-emitting diodes using electronic sum-frequency generation spectroscopy. The study found changes in spectral signal intensities when applying voltages, indicating different internal charge flow across the organic layers.
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.
Scientists investigate whether living neurons can transport light through their axons, which would significantly change current models of the nervous system. If successful, it could have major implications for treating brain diseases and healing the brain.
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.
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.
Harvard researchers have created a photon router that could plug into quantum networks to create robust optical interfaces for noise-sensitive microwave quantum computers. The breakthrough enables control of microwave qubits with optical signals generated many miles away, bridging the energy gap between microwave and optical photons.
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...
Three UVA Engineering faculty members have been elected as AAAS Fellows for their groundbreaking work in computer architecture, energy transport, and hydrology. Sandhya Dwarkadas, Patrick E. Hopkins, and Venkataraman Lakshmi were recognized for their innovative research and contributions to their respective fields.
Scientists at the University of Rochester have discovered a way to create artificial atoms within twisted monolayers of molybdenum diselenide, retaining information when activated by light. This breakthrough could lead to new types of quantum devices, such as memory or nodes in a quantum network.
UC Santa Barbara researchers develop photonic integrated 3D-MOT, a miniaturized version of equipment used to trap and cool atoms. This innovation enables new applications in sensing, precision timekeeping, and quantum computing, and paves the way for accessible quantum research projects.
Researchers developed a 7-axis synchronization algorithm for freeform surface laser texturing, achieving high efficiency and accuracy without stitching errors. The approach improves processing efficiency by up to 559% and reduces errors by 60%, making it suitable for industrial applications.
A team of researchers from the University of Ottawa has developed innovative methods to enhance frequency conversion of terahertz (THz) waves in graphene-based structures, unlocking new potential for faster, more efficient technologies in wireless communication and signal processing. These advancements hold great promise for wireless c...
Researchers used quantum squeezing to improve gas sensing performance of optical frequency comb lasers, doubling the speed of detectors. The technique allowed for more precise measurements with fewer errors, enabling faster detection of molecules like hydrogen sulfide.
Researchers at UC Santa Barbara develop a chip-scale ultra-low-linewidth self-injection locked laser, outperforming current tabletop systems in key metrics. The technology enables scalable laser solutions for quantum computing and portable field-deployable sensors with improved interaction with atomic systems.
SwRI's novel Space Weather Solar Coronagraph (SwSCOR) will provide early detection and characterization of Earth-directed coronal mass ejections (CMEs), helping to predict geomagnetic storms and protect Earth assets. The instrument suite includes rapid data reduction software, delivering processed images to NOAA forecasters within minu...
The partnership aims to improve the speed and accuracy of flood damage assessments by combining multi-modal data sources and a novel vision language model. The system will enable first responders to quickly allocate resources and respond more efficiently to weather disasters.
Researchers led by Judith Su will develop a portable FLOWER sensing device for detecting zeptomolar concentrations of chemical warfare agents. The device has shown record-breaking sensitivity and could preserve the lives of active-duty service members.
Researchers developed a highly sensitive hydrogen detection system using tunable diode laser absorption spectroscopy (TDLAS) with high selectivity and rapid response. The new method achieved accurate measurements of hydrogen concentrations from 0.01% to 100%, improving the detection limit at longer integration times.
Researchers developed a new biocompatible sensor substrate using Ag nanoislands protected with column-structured silica, increasing fluorescence and Raman signals by 10 million times. The technique enables non-invasive monitoring of biological processes without disrupting cell function or causing damage.
Researchers at UC Santa Cruz have developed a highly accurate and affordable spectrometer that can be customized for specific applications. The device uses machine learning algorithms to reconstruct images with high accuracy, enabling astronomers to study phenomena such as exoplanet atmospheres and dark matter in faint galaxies.
The study introduces a reconfigurable simultaneous lightwave information and power transfer (SLIPT) system using a MIMO-based configuration, addressing existing OWC systems' limitations. The system achieves high-speed communication and efficient energy harvesting, enabling autonomous IoT devices in harsh environments.
A new device has been developed to analyze and control partial coherence in multimode spatial light fields, utilizing integrated photonics platforms and arrays of reconfigurable Mach-Zehnder interferometers. This technology can enhance applications in advanced imaging systems, environmental sensing, and optical communications.
Scientists developed a technique to engineer LHPs with controlled size distribution of quantum wells, improving efficiency and stability in LEDs and lasers. By controlling nanoplatelets' growth, they achieved excellent energy cascades, enhancing photovoltaic performance and stability.
The University of Virginia has been awarded an $8 million grant to develop compact, chip-scale photonic systems that enhance the sensitivity of optical detectors. These advancements have the potential to transform fields like night vision technology and biomedical imaging.
Researchers developed boron nitride nanotubes with spin qubits, more sensitive to off-axis magnetic fields than diamond tips. The technology has applications in quantum sensing, semiconductor industry, and nanoscale MRI.
A new type of OLED device can amplify and convert near infrared light into visible light, promising low power consumption and long battery life. The device has a memory effect that could enable computer vision systems to sense and interpret incoming light signals.
Researchers at Purdue University have developed a patent-pending optical counterfeit detection method for chips called RAPTOR, which exceeds traditional methods by up to 40% in accuracy. The technology uses deep learning to identify tampering and has been validated through simulations.
Researchers at the University of Warsaw developed a quantum-inspired super-resolving spectrometer that uses latent information carried by photons to improve spectral resolution. The device offers over a two-fold improvement in resolution compared to standard approaches and has potential applications in optical and quantum networks.
Scientists at Chalmers University of Technology have successfully combined nonlinear and high-index nanophotonics in a single nanoobject, creating a disk-like structure with unique optical properties. The discovery has great potential for developing efficient and compact nonlinear optical devices.
A new study introduces a faster approach to analyzing scattered light, enabling real-time monitoring of medication manufacturing. The technique reduces reconstruction time from 15 seconds to 0.25 seconds and offers a low-cost non-invasive particle size probe for efficient production.
A team of researchers led by Dr. Zihao Ou successfully made the skin on live mice transparent using a mixture of water and tartrazine, a common food coloring. This breakthrough allows for direct observation of organs and tissues beneath the skin, opening up new possibilities for biomedical research.
Researchers develop femtosecond laser sheet-compressed ultrafast photography (fsLS-CUP) to capture ultrafast dynamics in flames. The technique enables simultaneous imaging of soot particles and polycyclic aromatic hydrocarbons (PAHs), revealing their formation and growth in flames.
A new scheme extends temporal ghost imaging to arbitrary wavelengths, enabling flexible operation in the mid-infrared. Computational TGI allows for scan-free imaging and studying ultrafast dynamics.
Researchers at Soochow University introduced coherence entropy as a global characterization of light fields subjected to random fluctuations. Coherence entropy remains stable during the propagation of light through complex media, making it a robust indicator of light field behavior in non-ideal conditions.
Researchers developed a new 2D quantum sensing chip using hexagonal boron nitride that can simultaneously detect temperature anomalies and magnetic fields in any direction. The chip is significantly thinner than current quantum technology for magnetometry, enabling cheaper and more versatile sensors.
Researchers developed OptoGPT, an algorithm that designs optical multilayer film structures for various applications. It produces designs in 0.1 seconds and contains six fewer layers on average compared to previous models.
A new camera system called PrivacyLens can replace people in images with generic stick figures, protecting their identities and reducing unnecessary surveillance. This technology could prevent embarrassing photos from being shared online and make patients more comfortable using cameras for chronic health monitoring.
Researchers developed a novel method to estimate modulation amplitude and determine spatial resolution in Brillouin optical correlation-domain reflectometry (BOCDR) without costly equipment. This innovation simplifies the process, reducing costs and enhancing convenience.
A team of researchers has created a novel approach to control thermal emission by designing an interface that joins two surfaces with different geometric properties. This allows for localized thermal emissions from designated areas, enabling applications in infrared optics, sensing, and satellite technology.
Researchers captured a volcanic event on Io using the Large Binocular Telescope's SHARK-VIS instrument, achieving higher resolution than ever before with Earth-based observations. The images reveal surface details equivalent to taking a picture of a dime-sized object from 100 miles away.
Dariusz Stramski has made significant impacts on ocean optics with his research spanning radiative transfer and innovative technologies. His work has explored interactions of light with marine particles and has developed novel reductionist concepts to advance inverse optical models.
A new, tuneable edge-detecting filter for flat-optic imaging systems can switch between an image of an object's outline and a detailed infrared image, enabling precise crop management and habitat restoration. The filter is compact, lightweight, and can be mass-manufactured.
Researchers at the University of Rochester developed a new microcomb laser design that provides low power efficiency, high tunability, and easy operation. The simplified approach enables direct control over the comb with a single switch, opening up potential applications in telecommunications systems, LiDAR for autonomous vehicles.
Scientists at the University of Rochester have developed a technique for pairing particles of light and sound, allowing for faithful conversion of information stored in quantum systems. The method uses surface acoustic waves, which can be accessed and controlled without mechanical contact, enabling strong quantum coupling on any material.
Scientists at Harvard John A. Paulson School of Engineering and Applied Sciences have developed a compact, single-shot polarization imaging system that can provide a complete picture of polarization. The system uses two thin metasurfaces to capture the most complete polarization response of an object in real-time.
A team of researchers at NYU Abu Dhabi's Photonics Research Lab has developed a novel, two-dimensional material capable of precise light modulation. The innovation offers precise control over the refractive index while minimizing optical losses, enhancing modulation efficiency and reducing footprint.
The team created ten holograms with varying colors and shapes using an inverse design technique driven by artificial intelligence. They integrated an oblique helicoidal cholesterics-based wavelength modulator to accurately implement the designed holograms, enabling the establishment of an optical security system.
Researchers at NIH developed a novel AI-based method called P-GAN to improve next-generation imaging of cells in the retina. The technique reduces imaging acquisition and processing time by 100-fold, yielding greater contrast and improving image quality.
Researchers pioneer technique to control polaritons, unlocking potential for next-generation materials and surpassing performance limitations of optical displays. The breakthrough enables stable generation of polariton particles with enhanced brightness and color control.
A new ultrafast camera system called SCARF has been developed by Professor Jinyang Liang's team at INRS, capturing up to 156.3 trillion frames per second with astonishing precision. This breakthrough enables real-time imaging of unique phenomena that are ultrafast, non-repeatable, or difficult to reproduce.
The researchers achieved 20-level intermediate states of phase change materials using a micron-scale laser writing system. This allows for the demonstration of ultra-high flexibility in phase modulation and potential applications in neuromorphic photonics, optical computing, and reconfigurable metasurfaces.