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Research & Technology News
Defined Limits Help to Solidify Use of Spaceplates in Optical Systems
ITHACA, N.Y., July 26, 2022 — Researchers at Cornell University have proposed a definition for the fundamental and practical limits of spaceplates, a technology developed to support the miniaturization of optical systems. According to the researchers, their attempt marks the first time spaceplate bounds have been identified. In optical systems, the free-space volume between the detector and the lens (or between lenses) allows light to acquire the distance- and angle-dependent phase necessary for the system to focus.
Add-On 3D Imager Enables Affordable Treatments for Eye Conditions
GLASGOW, Scotland, July 25, 2022 — An ophthalmological device developed at the University of Strathclyde supports low-cost screenings for eye disease. The device captures 3D images of the retina and the back of the eye, as well as the cornea — which is an important feature for...
Terahertz Light Experiments Herald Downsized Particle Accelerators
OAK RIDGE, Tenn., July 25, 2022 — Scientists at Oak Ridge National Laboratory (ORNL) investigating how to produce and use terahertz (THz) light to enable particle accelerators developed an electro-optical sampling technique that measures THz wavelengths while at the same time...
Light-Powered Nanomotors Perform as Ultrasmall Energy Converters
AUSTIN, Texas, July 21, 2022 — Researchers at the University of Texas (UT) have designed a solid-state, optical nanomotor that uses light to power functional devices at the nanoscale — without the challenges that hinder nanomotors operating in liquid environments. According...
Atomically Smooth Gold Crystals Enable Nanophotonic Applications
LONDON, July 19, 2022 — Researchers at KAIST and collaborators have demonstrated a platform to guide compressed lightwaves in extremely thin Van der Waals crystals. The researchers believe that the method, used to guide mid-infrared light with minimal loss, will enable...
Direct Laser Welding Enables Adhesive-Free Fiber-to-Chip Connection
WEßLING, Germany, July 19, 2022 — Fraunhofer IZM researchers and partners have developed a laser welding technique to fix optical fibers to photonic integrated circuits (PICs), removing the need for adhesive bonding. The technology was developed in response to proposed biophotonic...
Gel Filters Various Wavelengths of Light as its Temperature Changes
GAITHERSBURG, Md., July 18, 2022 — A colloidal gel developed at the National Institute of Standards and Technology (NIST) has demonstrated that it can control structural color and light transmission. Called SeedGel by its creators, the material was originally developed for industrial...
3D Holographic Display Achieves Wide Viewing Angle
BEIJING, July 15, 2022 — A Beihang University research team created a holographic 3D display system that widens its viewing angle and enlarges image size through the simultaneous implementation of two different hologram generation methods. The system features a tunable...
Researchers Increase Spatiotemporal Resolution of Imaged Lightwaves
GARCHING, Germany, July 14, 2022 — A team of physicists from the Max Planck Institute of Quantum Optics and the Ludwig Maximilian University of Munich, in cooperation with Stanford University researchers, have developed a technique to measure the electrical field of ultrashort laser...
Silicon Defect Offers Photonic Link to Quantum Internet
BURNABY, British Columbia, July 14, 2022 — A research team at Simon Fraser University (SFU) have exploited a defect in silicon that it believes will enable the realization of massively scalable quantum computers — and the quantum internet that will connect them. Previous research has...
Integrated Photonics Processor Outperforms Wireless Systems
MILAN, July 13, 2022 — An international team led by researchers at the Politecnico di Milano has devised a way to separate and distinguish optical beams even when the beams are superimposed, and even when the form in which the beams arrive at a destination is drastically...
Diamond Defects Boost Magnetic Field Sensing for Brain Activity Mapping
MELBOURNE, Australia, July 12, 2022 — A team from Fraunhofer Institute for Applied Solid State Physics (Fraunhofer IAF), with diamond sensing technology experts from RMIT University, demonstrated that magnetic-field-dependent emission from nitrogen-vacancy (NV) centers in diamond...
Fiber Photometry Manages, Records Brain Activity at Same Time
BEIJING, July 12, 2022 — Researchers at Tsinghua University and Huazhong University of Science and Technology have developed an all-fiber-transmission photometry system that permits optogenetic manipulation and multicolor recording of neuronal activities and...
Bio-Instrument Aims to Bring Life on Other Planets Into View
HONOLULU, July 11, 2022 — The Compact Color Biofinder, an imaging device developed by researchers at the University of Hawai’i at Manoa, demonstrated the ability to detect biofluorescence signals from trace amounts of organic matter from a distance of a few centimeters...
Self-Calibrating Optical Chip Supercharges Connectivity
MELBOURNE, Australia, July 11, 2022 — A self-calibrating photonic integrated circuit (PIC) developed by Monash University and RMIT scientists holds immense promise for the development of artificial intelligence and optical networking. The researchers said that their technology offers a...
Signal Sorting Method Suppresses Noise in STED Microscopy
BELLINGHAM, Wash., July 8, 2022 — Researchers from Zhejiang University have proposed a novel microscopy method that selectively and effectively suppresses background noise in the existing technique of stimulated emission depletion (STED) microscopy. Background noise is considered a...
High Harmonics Reveal Nonlinear Light-Matter Interaction Dynamics
HAMBURG, Germany, July 7, 2022 — Physicists from the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) have illuminated, with laser light, the atomic motions of atoms and electrons contained within a solid. In the theoretical study, the researchers outlined how a...
Imaging Technique Enables Gas Leak Tracking in 3D
HEFEI, China, July 7, 2022 — Researchers at the Anhui Institute of Optics and Fine Mechanics at the Chinese Academy of Sciences have developed a method to create a 3D image of a leaked gas cloud. The image provides detailed information about the leak, such as its location,...
High-Throughput Imaging Links Microbial Metabolism With Cell Identity
BOSTON, July 5, 2022 — An imaging platform for investigating microbiomes in medical and environmental samples can perform high-throughput metabolism and identity analyses with single-cell resolution. Called SRS-FISH, or stimulated Raman scattering two-photon fluorescence...
Team Challenges, Resolves Fundamental Rule Governing Light Propagation
JOHANNESBURG, July 4, 2022 — A study conducted by researchers at the University of the Witwatersrand (Wits) and collaborators from Mexico, Scotland, and the University of Pretoria aims to explains the rules governing the complex light propagation in complex media — media...
Wearable Sensor Uses Raman Spectroscopy for Chemical Analysis
TOKYO, July 4, 2022 — An ultrathin sensor spun from gold can be attached directly to the skin without irritation or discomfort. Developed by researchers at the University of Tokyo, the sensor is enabled by Raman spectroscopy and can measure different biomarkers or...
Single-Mode Semiconductor Laser Exhibits High Power, Scalability
BERKELEY, Calif., July 1, 2022 — A semiconductor laser developed by University of California, Berkeley (UC Berkeley) researchers accomplishes an elusive goal in the field of optics: the ability to maintain a single mode of emitted light while maintaining the ability to scale up in...
Ultrathin Light-Field Imaging Film Yields Vivid 3D Images
WASHINGTON, D.C., June 30, 2022 — Soochow University researchers developed an ultrathin film based on light-field imaging — a technology that creates 3D images by capturing the direction and intensity of all light rays in a scene. The 25-µm-thick film, which is made with...
Nonlinear Optical Sensor Avoids Precision/Speed Trade-Off
AMSTERDAM, June 29, 2022 — An optical measurement method devised by a team of AMOLF researchers aims to simplify and streamline the ability to capture measurements from signals that are barely larger than the noise contained in the same system. The newly introduced approach...
Light-Matter Coupling Makes Dark Semiconductor Glow
OLDENBURG, Germany, June 28, 2022 — Researchers from the University of Oldenburg have introduced a light-matter coupling mechanism to make the 2D semiconductor material tungsten diselenide (WSe2) glow — marking a step toward the control of the properties of matter through light...
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