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Light Sources News
Tunable Approach to Structural Color Powers Displays, Cuts Energy
LINKÖPING, Sweden, July 26, 2021 — Researchers at Linköping University have discovered a way to generate structural color that could potentially be applied to the manufacture of low-cost, energy-efficient displays and electronic labels. The method uses monochromic conducting polymer films, which the researchers prepared on metallic surfaces (that is, mirrors) using vapor phase polymerization (VPP) and a single ultraviolet (UV) light patterning step. “We have developed a simple method to produce structural color
CMOS-Compatible Spectrotemporal Compressor Could Support Ultrafast Optical Signal Processing
SINGAPORE, July 14, 2021 — Researchers at the Singapore University of Technology and Design (SUTD), the A*STAR Institute of Microelectronics, and MIT have developed an all-optical spectrotemporal pulse compression system. The system, which is built on a CMOS-compatible...
Researchers Control Brain States Via Photoswitchable Molecule
BARCELONA, Spain, July 6, 2021 — A team of scientists in Spain has directly photomodulated brain-state transitions in vivo using a photoswitchable molecule that was developed previously by researchers at the Institute for Bioengineering of Catalonia (IBEC). By applying a...
Thin-Film GaAs Photovoltaic Cell Achieves Record Efficiency
FREIBURG IM BREISGAU, Germany, June 30, 2021 — Researchers at Fraunhofer Institute for Solar Energy Systems ISE have achieved a conversion efficiency of 68.9% for a III-V semiconductor photovoltaic cell based on gallium arsenide (GaAs) exposed to laser light of 858 nm. The mark is reportedly the...
Daily-Use Light Source Converts IR to Blue Light for Sterilization, Disinfection
OSAKA, Japan, June 25, 2021 — A microcavity device that converts infrared (IR) radiation into blue light could enable safe, daily use of deep ultraviolet (DUV) light for disinfection and sterilization. The device was developed by a research group from Osaka University and was...
Lattice Light-Sheet Microscopy Targets Malaria
MELBOURNE, Australia, June 22, 2021 — With the help of a custom-built lattice light-sheet microscope, researchers at the Walter and Eliza Hall Institute (WEHI) captured high-resolution 3D video images of individual malaria parasites (Plasmodium falciparum) invading red blood cells in...
Simpler Approach Produces Highly Chirped Laser Pulses
ROCHESTER, N.Y., June 21, 2021 — Researchers at the University of Rochester’s Institute of Optics have produced ultrashort, extremely high-energy (chirped) laser pulses using a spectral filter in a Kerr resonator. Kerr resonators, which operate without amplification, are of...
Improving Photoluminescence in Silicon Boosts PIC Performance
MOSCOW, June 17, 2021 — Researchers in Russia have increased photoluminescence (PL) in silicon using germanium quantum dots and a specially designed silicon photonic crystal. Developed by scientists from Skolkovo Institute of Science and Technology (Skoltech), Institute...
Light-Based Method Creates 2D Polymer, Expedites Quest for New 2D Materials
LINKÖPING, Sweden, June 16, 2021 — A method that uses light to manufacture 2D polymers that have the thickness of a single molecule could create a path for the development of ultrathin, functional 2D materials with highly defined and regular crystalline structures. The new method was...
Quantum Microscope Examines Cells in Unprecedented Detail
BRISBANE, Australia, June 11, 2021 — A quantum microscope developed at the University of Queensland can resolve cellular structures that would otherwise be impossible to see. The technology overcomes a significant barrier to furthering microscopy for biological imaging. According to...
Clinical, Commercial Applications Loom for Ultracompact On-Chip Spectrometer
NEW HAVEN, Conn., June 10, 2021 — An ultracompact, mid-infrared spectrometer that uses a 10-nm thick, single tunable black phosphorus photodetector shows promise as an on-chip device for sensing, surveillance, and spectral imaging. The device is the result of a collaboration among...
Multiwavelength Optical Laser Sources Specification Will Boost Data Center Efficiency
SANTA CLARA, Calif., June 8, 2021 — The CW-WDM MSA (Continuous-Wave Wavelength Division Multiplexing Multi-Source Agreement) Group released its first official specification for 8, 16, and 32 wavelength optical sources. The group formed last June to define and promote specifications...
Fluorescence Microscopy Technique Images Brain at High Resolution
WASHINGTON, D.C., June 8, 2021 — A noninvasive brain imaging technique developed by researchers at ETH Zurich and the University of Zurich works in the near-infrared (NIR) spectrum to enable superresolution deep-tissue fluorescence microscopy at four times the depth limit imposed...
Hyperspectral Imaging, OCT Team to Detect Early Biomarkers of Alzheimer’s Disease
LEUVEN, Belgium, June 2, 2021 — A team of scientists and engineers from Katholieke Universiteit (KU) Leuven, Universitair Ziekenhuis (UZ) Leuven, and the research organization VITO, collaborating with the international research and development group imec, used imec’s...
Programmable 2D Nanomaterial Captures Artificial Light for Bioimaging
RICHLAND, Wash., May 27, 2021 — A light-harvesting nanomaterial inspired by the hierarchically structured biominerals in nature could be used to build artificial light-harvesting systems for bioimaging, photovoltaics, and other applications. Created by researchers at Pacific...
Organic Optogenetics Tool Shines Light on Brain Communication
REHOVOT, Israel, May 25, 2021 — Light-sensing proteins called rhodopsins are used in optogenetics to control neuronal activity, but existing rhodopsins can have low efficacy, especially when they are used to control synaptic activity between neurons. A mosquito-derived rhodopsin...
3D-Printed Microlenses Correct Color Distortions in Small-Scale Images
WASHINGTON, D.C., May 24, 2021 — Researchers from the University of Stuttgart used a 3D-printing process called two-photon lithography to make highly precise lenses that are just a few micrometers in size and that reduce chromatic aberrations. The miniature lenses could be used in...
Virginia Tech Receives $2.4M to Optically Measure Brain Activity
ROANOKE, Va., May 20, 2021 — Researchers at the Fralin Biomedical Research Institute at Virginia Tech Carilion School of Medicine (VTCSM) received a $2.4 million National Institutes of Health grant to use optically pumped magnetometry to explore neural activity during...
Integrated Approach Emits Quantum Light on Demand, at Room Temperature
STOCKHOLM, May 19, 2021 — An integrated approach that uses a single-photon emitter embedded in a photonic waveguide, developed by researchers at KTH Royal Institute of Technology, could enable the transmission of large-scale quantum information over fiber optic networks. The...
Nitride-Based MicroLED Emits Pure Red Light
THUWAL, Saudi Arabia, May 14, 2021 — A microLED developed at KAUST is able to efficiently emit pure red light and could help in the quest to develop full-color displays based on a single semiconductor. MicroLEDs are a favored technology for next-generation displays, given their (small)...
Hybrid Microscopy Method, AI Deliver Robust Images in Seconds
HEIDELBERG, Germany, May 12, 2021 — Scientists at the European Molecular Biology Laboratory (EMBL) combined AI algorithms with light-field microscopy and light-sheet microscopy. The hybrid, AI-enhanced approach shortened the time needed for image processing — from days to...
Ti:Sapphire Laser Breaks Record for Pulse Intensity
WASHINGTON, D.C., May 6, 2021 — At the Center for Relativistic Laser Science (CoReLS, Institute for Basic Science in the Republic of Korea), researchers report they have achieved high-laser pulse intensity of over 10^23 W/cm2. The intensity, the researchers said, is a record that...
Apple, II-VI to Accelerate iPhone, Lidar Developments
CUPERTINO, Calif., May 5, 2021 — Apple has awarded more than $400 million from its Advanced Manufacturing Fund to optical components and semiconductor materials company II-VI. The funding builds on an initial $390 million that Apple awarded II-VI in 2017. Apple said the expansion...
Nanoflashlight Could Turn Mobile Devices into Powerful Biosensors
CAMBRIDGE, Mass., May 4, 2021 — Researchers at MIT built a device that they describe as a “nanoscale flashlight” on a chip. The device overcomes a limitation of spectroscopy, in that spectrometers are relatively large instruments. Much like a spectrometer, the MIT...
Retroreflective Material Helps Robots to Analyze Surroundings
LUXEMBOURG, May 3, 2021 — A material developed and introduced by researchers at the University of Luxembourg will help robots analyze and understand their surroundings. The material relies on hardened retroreflective spheres made from cholesteric liquid crystals, which turn...
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August 2024
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