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Amplitude-Only Modulator Targets Photonic Device Efficiency
EXETER, England, Aug. 21, 2023 — A thin-film, amplitude-only spatial light modulator made from phase-change-based material was developed by researchers at the University of Exeter and the Institute of Optics in Madrid. The device operates in reflection and modulates the amplitude of light incident on its surface with virtually no changes to the optical phase. When the phase-change material is switched between its amorphous and crystalline states, there is no effect on optical phase. Because phase-change materials
Spin-Optics Laser Enables Electron and Photon Spins for Optoelectronics
HAIFA, Israel, Aug. 17, 2023 — Researchers at the Technion Israel Institute of Technology developed an atomic-scale, spin-optical laser. To do so, they incorporated a WS2 monolayer into a heterostructure microcavity that supported high-Q photonic spin-valley resonances. The...
Light-Activated Metal Particles Deliver Targeted Cancer Treatment
NOMI, Japan, Aug. 15, 2023 — A research group from Japan Advanced Institute of Science and Technology (JAIST) developed light-activatable, liquid metal (LM) nanoparticles for cancer diagnosis and treatment via photoimmunotherapy. The LM nanoparticles can target and destroy...
Mathematical Approach Deciphers Orbital Angular Momentum Information
GUANGZHOU, China, Aug. 14, 2023 — Researchers from Sun Yat-sen University and École Polytechnique Fédérale de Lausanne (EPFL) have made progress in the use of interferometry to decipher orbital angular momentum (OAM) spectrum information. Lightwaves with OAM...
Near-IR Biosensors Use DNA Anchors to Target Range of Molecules
BOCHUM, Germany, Aug. 10, 2023 — To build a flexible sensor for optically detecting a range of viruses and bacteria, a group of researchers from Ruhr University Bochum (RUB), the Fraunhofer Institute for Microelectronic Circuits and Systems (IMS), and ETH Zurich used...
Optical Measurements Combine for Early Metastasis Detection
BOSTON, Aug. 10, 2023 — Diffuse in vivo flow cytometry (DiFC), an optical technique developed at Northeastern University, enables fluorescence detection of tumor cells circulating in the bloodstream. It is a promising technique for detecting cancer that has metastasized....
IR Imager Merges AI, Thermal Physics to See in the Dark
WEST LAFAYETTE, Ind., Aug. 8, 2023 — Heat-Assisted Detection and Ranging (HADAR), a patent-pending thermal imaging technology from Purdue University, combines infrared (IR) imaging, machine learning, and thermal physics to visualize target objects in the dark as if it were broad...
Thin-film Silicon Photodetector Rivals III-V Counterparts
DAVIS, Calif., Aug. 7, 2023 — Researchers at the University of California, Davis (UC Davis) are developing a strategy to boost the light absorption of thin silicon films. The team demonstrated silicon-based photodetectors with light-trapping micro- and nano-surface structures,...
Light-Activated Biomimetic Gel Offers Potential for Corneal Repair
OTTAWA, Ontario, Aug.3, 2023 — Tens of millions of people around the world suffer from corneal diseases, with only a small fraction eligible for corneal transplantation. In a recent study, researchers at the University of Ottawa showed that biomimetic materials activated with...
Spectroscopy, Machine Learning Pair to Ease Recyclables Sorting
TIANJIN, China, Aug. 3, 2023 — Researchers at Hefei University of Technology have demonstrated the use of laser-induced breakdown spectroscopy (LIBS) to automatically identify, classify, and subclassify recyclable waste in real time. The resource re-use application enabled the...
Photonic Computing System Rethinks How to Power Familiar AI Tool
CAMBRIDGE, Mass., Aug. 1, 2023 — Researchers from MIT have demonstrated a photonics-based computing system that could lead to machine-learning programs several orders of magnitude more powerful than the one behind ChatGPT. The researchers reported a greater than 100-fold...
Quantum-Dot Laser Elevates Efficacy of Frequency Combs for PICs
SANTA BARBARA, Calif., Aug. 1, 2023 — University of California, Santa Barbara (UCSB) researchers led by John Bowers have developed a quantum-dot (QD) mode-locked laser that allows amplitude-modulated (AM) and frequency-modulated (FM) combs to be generated independently from the same...
Lens Fabrication Clears Way for Sensor's Optimal Light Source
TOULOUSE, France, July 31, 2023 — Researchers from the University of Toulouse have developed a method to fabricate a microlens that could enable more effective portable gas sensing technologies. The researchers used two-photon-polymerization 3D printing to fabricate a microlens that...
Linear Waveguide Streamlines Directional Single-Photon Production
BARCELONA, Spain, July 31, 2023 — Researchers from the Institute of Optics of CSIC and the Institute of Photonic Sciences (ICFO, Spain) have developed and demonstrated an approach to generating single photons along well-defined directions. The advancement avoids the need for...
Perovskite Cells Meet Wearable Biosensor’s Power Demands
PASADENA, Calif., July 27, 2023 — Perovskite solar cells are providing a team at Caltech’s Heritage Medical Research Institute with an efficient power source for wearable sweat sensors that monitor a host of biomarkers associated with disease diagnostics and fitness levels....
Pixel-by-Pixel, Detector Captures Far-Away Targets in all Conditions
ALBUQUERQUE, N.M., July 27, 2023 — The capability to detect and track small, moving objects remotely, in all conditions, is crucial to many surveillance and monitoring missions. It is also an ongoing challenge. According to Tian Ma, a computer scientist at Sandia National...
One-Camera Method Reveals Added Insights in Additive Manufacturing
PITTSBURGH, July 26, 2023 — Thermodynamic insights into the laser powder bed fusion process in additive manufacturing are critical to ensuring the production of quality parts. For example, if too much of the material vaporizes, or the melt pool becomes unstable during the...
Reconceptualized OCT Method Targets Cancer Diagnoses
ADELAIDE, Australia, July 25, 2023 — An international team of researchers has made an advancement to the technique of optical coherence tomography (OCT) that holds implications for ophthalmology, dermatology, cardiology,and the early detection of cancer. The work was conducted by...
Optofluidic Micromanipulations Show Aptitude in Laser Biomedicine
KARLSRUHE, Germany, July 24, 2023 — Techniques for micromanipulation, including those that rely on optofluidics, are widely adopted for applications in the life sciences, materials science, and colloidal physics. These techniques support nanostructure assembly and particle trapping,...
Quantum-Confined Mediums Scrutinized for Narrow Linewidth Lasing
THUWAL, Saudi Arabia, July 24, 2023 — On-chip laser diodes based on quantum dot (QD) and quantum well (QW) semiconductor materials are strong candidates for applications that rely on stable laser emissions with narrow linewidth. Examples include lidar, remote sensing, and coherent...
Nanophotonic Simulator Performs Computations at the Quantum Level
ROCHESTER, N.Y., July 21, 2023 — Researchers at the University of Rochester (UR) have developed a photonics-based quantum simulation system that simulates physical phenomena at the quantum level. The nanophotonic quantum simulator performs chip-scale simulations in a...
Lasers Help Mimic Biosystems as Team Prods Organisms’ Reproduction
NEW YORK, July 20, 2023 — Researchers at New York University (NYU) have devised a system of asynchronous, optically driven micro-rotors that could be used to study far-from-equilibrium phenomena such as turbulent weather and biosystems. The advancement could potentially be...
Tin Coatings’ Growth Effects Reveal Path to Precise Control
JENA, Germany, July 19, 2023 — Nanometer-scale coatings with functional materials are used for numerous applications in photonics and electronics, including in sensors and biomedicine. One-dimensional nanostructures, which are among these materials, attract substantial attention;...
Brain Imaging, Image Reconstruction Combine in a Single Workflow
KLOSTERNEUBURG, Austria, July 18, 2023 — Scientists at Institute of Science and Technology Austria (ISTA) have developed an imaging technology to analyze live brain tissue at a scope and spatial resolution that, according to the researchers, was not previously possible. The technology,...
Fiber Optic Tag Enables Efficient All-Optical Link Encryption
SHENZHEN, China, July 17, 2023 — In an advancement that could improve the way that optical distribution networks are maintained, researchers at Shenzhen University have demonstrated an encrypted fiber optic tag for all-optical labeling and the recognition of optical transmission...

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