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Research & Technology News

Integrated Terahertz Platform Supports Broadband Coherent Photonics
ZURICH, Jan. 9, 2023 — Recent advancements in the high-temperature operation of terahertz (THz) quantum cascade lasers, combined with their frequency agility and the potential to operate as frequency combs and high-speed detectors, make them highly appealing for THz photonics. Building on previous approaches to THz integration, including hybrid plasmonic waveguides, monolithically integrated THz transceivers, coupled cavity devices, and, most recently, devices integrated on silicon, researchers at ETH Zurich
Hydrogel Improvements Boost Utility of Expansion Microscopy
PITTSBURGH, Jan. 5, 2022 — Collaborators from Carnegie Mellon University, the University of Pittsburgh, and Brown University have described a microscopy technique and set of protocols that overcome a bottleneck to the expansion microscopy method. The collaborators developed...
Laser-Induced Protein Detection Speeds Diagnosis of Disease
OSAKA, Japan, Jan. 5, 2023 — Researchers at Osaka Metropolitan University have developed an optical alternative to immunoassays and other methods used for protein analysis. The alternative method provides rapid, highly sensitive detection of proteins through laser irradiation....
Photonic System Explores Two-Dimensional Topological Pumping
SHANGHAI, Jan. 3, 2023 — In photonic systems, Thouless pumping enables light transport to take place in a robust way. The method is quantized — determined by the global rather than the local properties of a system. It exhibits topological features, and its ubiquitous...
Microwave Photonic Filter Shifts Paradigm for Future Communications
ENSCHEDE, Netherlands, Jan. 2, 2023 — Researchers from the University of Twente have developed a multifunctional photonic integrated circuit (PIC) that enables programmable filtering functions with a reported record-high dynamic range. The advancement addresses concepts and technologies...
Pump-Probe Spectroscopy Could Help to Control Chiral Molecules
BERLIN, Dec. 30, 2022 — An international research team at Freie Universität Berlin, in collaboration with colleagues at the DESY research center, Kiel University, and Kansas State University, has proposed a quantum-chemical calculation-based approach to induce and...
Optical Tweezer System Conducts High-Accuracy Cell Screening
QINGDAO, China, Dec. 29, 2022 — Researchers from the Single-Cell Center of the Qingdao Institute of Bioenergy and Bioprocess Technology (QIBEBT) of the Chinese Academy of Sciences have proposed an optical tweezer-assisted pool-screening and single-cell isolation (OPSI) system that...
Signal Processing Algorithms Cut Turbulence in Free-Space Communications
BIRMINGHAM, England, Dec. 28, 2022 — Researchers from Aston University and Glasgow University have created signal-processing algorithms to help mitigate the impact of turbulence in free-space optical experiments. They used commercially available photonic lanterns — optical fiber...
Biosolar Cell Draws Electricity from Photosynthesis Process
HAIFA, Israel, Dec. 27, 2022 — Researchers from the Israel Institute of Technology (Technion) used a succulent plant to create a living “bio-solar cell” that runs on photosynthesis. The demonstration showed how the natural processes that take place in living plants...
Modified Raman Microscopy Technique Reveals Molecular Orientation Patterns
GAITHERSBURG, Md., Dec. 27, 2022 — Researchers at the National Institute of Standards and Technology (NIST) have developed a way to measure the 3D orientation of molecules within a material made of polymers. The measurement technique — based on broadband coherent anti-Stokes...
Phase Retrieval Method Addresses Programmable PIC Calibration
MELBOURNE, Australia, Dec. 26, 2022 — Researcher from Monash University, RMIT, and the University of Adelaide have developed an accurate method of controlling optical circuits on fingernail-size photonic integrated circuits (PICs). The development builds on previous work by the team, in...
Terahertz Microscopy Could Boost Performance of Perovskite
AMES, Iowa, Dec. 26, 2022 — To better evaluate perovskite solar cell material(s), scientists at the U.S. Department of Energy’s Ames National Laboratory developed a microscope that simultaneously images at the terahertz (THz) frequency and nanometer spatial scales....
Microfabricated Fluidics Device Underpins Blood-Plasma Separation Method
LEIOA, Spain, Dec. 23, 2022 — Researchers at the University of the Basque Country (UPV/EHU) developed a microfluidics device to detect blood biomarkers. The researchers used a stereolithography (SLA) technique that enabled them to generate features as small as 10 µm...
Device Employs Structural Color to Image Ambient Gases
TSUKUBA, Japan, Dec. 22, 2022 — Researchers from the National Institute for Materials Science (NIMS, Japan), Harvard University, and the University of Connecticut jointly designed and fabricated a simple device developed for imaging a gas injected into it — in multiple...
Single Optical Fiber Drives High-Density Nanolaser Arrays
SEOUL, South Korea, Dec. 19, 2022 — Although the optical waveguides used in optical circuits allow much higher bandwidths than the fine copper wires that are used in electronic chips — and generate less heat — the size of optical integrated circuits is quickly reaching...
Interferometric Method Measures Interactions at Zeptosecond Speed
NATHAN, Australia, Dec. 16, 2022 — According to researchers at the Australian Attosecond Science Facility and the Centre for Quantum Dynamics of Griffith University, building an interferometer in the extreme ultraviolet (EUV) region is challenging for two reasons. First, it is itself...
US Department of Energy Details Net Energy Gain from LLNL Fusion Work
WASHINGTON, D.C., Dec. 13, 2022 — Officials from the U.S. Department of Energy (DOE) announced that scientists at the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL) achieved fusion ignition, marking a groundbreaking advance in the decades-long...
Nanoscope Offers Views Into Quantum Computations
AMES, Iowa, Dec. 13, 2022 — A newly developed microscope housed at the U.S. Department of Energy’s Ames National Laboratory is poised to help researchers understand — and ultimately develop — the inner workings of quantum computing. The microscope, called a...
Silicon Photonics Accelerates On-Chip Neural Network Training
WASHINGTON, D.C., Dec. 8, 2022 — Researchers from George Washington University (GWU) have introduced a strategy for training deep neural networks the benefits of using photonics to execute artificial intelligence (AI) applications. The team’s CMOS-compatible silicon photonics...
Atypical Accelerator Yields Free-Electron Lasing in UV
DRESDEN, Germany, Dec. 7, 2022 — The extremely intense light pulses generated by free-electron lasers (FELs) are versatile tools in research. In the x-ray range, they can be used to analyze the details of atomic structures of a wide variety of materials, and to follow fundamental...
Microscope Captures High-Speed Images of Living Cells in 3D
TROMSØ, Norway, Dec. 6, 2022 — A limitation to conventional microscopy imaging, in which a sample is usually squeezed onto a glass slide, is that the behavior of the cells may differ from their natural environment. Further, the the images obtained via this approach are...
Fiber Technology Invented in 1970s Enters Quantum Age
CASTELLDEFELS, Spain, Dec. 5, 2022 — Following its development by a team at Corning in 1970, low-loss optical fiber became the best means to efficiently transport information from one place to another over long distances without loss of information. However, with the exponential...
Sound Waves Enable Single-Photon Control at High Speed
MÜNSTER, Germany, Dec. 1, 2022 — Light and sound are foundational to modern communication technology. Glass fibers — with laser light— form the bedrock of the internet. Nanoscale sound waves on chips serve to process signals at gigahertz frequencies for wireless...
Programmable Device Enables Optical Control at Unprecedented Speeds
CAMBRIDGE, Mass., Nov. 30, 2022 — An international team led by MIT researchers has developed a spatial light modulator (SLM) that promises greater control of light at orders of magnitude more quickly than commercial devices. The team also developed a fabrication process to ensure...
Diode Demonstration Establishes Efficient Route to Sterile Settings
NAGOYA, Japan, Nov. 29, 2022 — Since their introduction in the 1960s, laser diodes have been developed and commercialized for a number of applications with wavelengths ranging from infrared to blue-violet. Examples of this technology include optical communications devices with...

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