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Nature Photonics News
Enlightra, DESY Hamburg Develop Improved, Scalable Comb Lasers
RENENS, Switzerland, Jan. 25, 2024 — Laser technology startup Enlightra has collaborated with DESY Hamburg to develop comb lasers that are more stable and efficient by design. The work demonstrated microresonators with programmable synthetic reflection providing tailored injection feedback to the driving laser. The technology is a marked improvement over conventional self-injection locking, and can be produced using standard lithographic production. Comb lasers are sources of multiple colors with equidistant spacing ranging
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...
Optical Neural Nets Speed Image Processing
ITHACA, N.Y., May 5, 2023 — Researchers at Cornell University have developed an optical neural network (ONN) that can filter relevant information from a scene before the visual image is detected by a camera. The method will enable faster, smaller, and more energy-efficient...
Three-Detector Scheme Resolves More Than 100 Photons
NEWPORT NEWS, Va., April 28, 2023 — Researchers at the U.S. Department of Energy’s Thomas Jefferson National Accelerator Facility have demonstrated the application of a photon-number-resolving system to accurately resolve more than 100 photons. Individual detectors today can...
On-Chip Quantum Light Source Brings Scalability to Quantum Cloud
HANNOVER, Germany, April 19, 2023 — Researchers from Leibniz University Hannover, the University of Twente, and photonic quantum computing company QuiX Quantum have presented an entangled quantum light source fully integrated on a chip. According to team member Michael Kues, who is...
Ultrafast Beam-Steering Achieved for Incoherent Light
ALBUQUERQUE, N.M., April 4, 2023 — A research team at Sandia National Laboratories has demonstrated a technique that dynamically steers light pulses from conventional incoherent light sources. The ability to control incoherent light with a semiconductor device could allow low-power,...
Researchers Develop Chip-Size Titanium-Doped Sapphire Laser
NEW HAVEN, Conn., Feb. 6, 2023 — A team of researchers has developed what is reportedly the first chip-scale titanium-doped sapphire laser — an innovation that could lead to new applications ranging from atomic clocks to quantum computing and spectroscopic sensors. The...
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...
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...
Single Laser on Optical Chip Sets Data Transmission Record
LYNGBY, Denmark, Nov. 3, 2022 — An international team of researchers has reportedly set a data transmission record using just a single laser and optical chip to transmit more than 1 Pbit/s. The researchers, from the Technical University of Denmark and Chalmers University of...
Frequency Converters Take Big Step Toward Miniaturizing Lasers
NEW YORK, Aug. 30, 2022 — Researchers from Columbia University and Politecnico di Milano used an atomically thin material to build microscopic color converters. The advancement is a first step toward replacing the standard materials used in today’s tunable lasers,...
New Optical Switch Could Lead to All-Optical Signal Processing
PASADENA, Calif., Aug. 2, 2022 — An optical switch developed by Caltech researchers harnesses the property of optical nonlinearity and aims to enable ultrafast all-optical signal processing and computing. According to its developers, the technology could help to bypass one of the...
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...
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...
Optical Oscilloscope Could Increase Data Rates by Factor of 10,000
ORLANDO, Fla., Dec. 23, 2021 — Researchers at the University of Central Florida (UCF) have developed an optical oscilloscope. The instrument converts light oscillations into electrical signals to measure the electric field of light. Due to the high speed at which light...
Integrated Device Modulates Light Without Dimming It
NEW YORK, Nov. 29, 2021 — Researchers at Columbia University School of Engineering and Applied Science have developed a device that modulates visible light without dimming it, and in a small footprint with low power consumption. The work holds implications for applications...
Toshiba Achieves Chip-Based QKD Tech
CAMBRIDGE, England, Oct. 22, 2021 — Toshiba Europe has developed a chip-based quantum key distribution (QKD) system that could enable mass manufacturing of quantum security technology for a broad range of applications, including Industry 4.0. A QKD chip under test at Toshiba’s...
Trust in Science Shines on International Day of Light 2021
PARIS, May 10, 2021 — Thought leaders from industry, academia, government, and beyond will come together for the fourth annual International Day of Light (IDL) on May 16. A robust global itinerary is planned, as is a dedicated campaign — “Trust Science”...
Light Penetrates Opaque Materials, Emerges Largely Unchanged
VIENNA, April 15, 2021 — A special class of lightwaves possesses the physical qualities that make it able to emerge largely unchanged upon penetrating disordered media. A team from the Vienna University of Technology (TU Wien) and Utrecht University determined that, for any...
Microcomb Promises Durability in Biophotonics, Metrological Applications
GOTHENBURG, Sweden, March 9, 2021 — A microcomb developed by researchers from Chalmers University of Technology has the potential to herald significant advances in a variety of technologies, spanning metrology and optical communication. The design is based on two microresonators and...
Four-wave Mixing Approach Generates Narrowband EUV Light with Laser
BERLIN, Jan. 26, 2021 — A method of modifying the spectral width of extreme ultraviolet light (EUV) has been developed by researchers at the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy. The scientists used a novel phase-matching scheme in four-wave...
Researchers Push Boundaries of High-Energy Laser Pulses
QUEBEC CITY, Nov. 20, 2020 — INRS researchers have pushed the boundaries of high-energy laser pulse propagation, with reliance on the observation of high-energy multidimensional solitary states (MDSS), allowing the direct generation of extremely short and intense laser pulses...
SPIE Announces 2020 Fellows
BELLINGHAM, Wash., and CARDIFF, Wales, Jan. 9, 2020 — SPIE, the international society for optics and photonics, has announced 72 members as new fellows of the society for 2020. Fellows are members of the society who have made significant scientific and technical contributions in the multidisciplinary...
Technique Stabilizes Femtosecond Pulses
MOSCOW and LAUSANNE, Switzerland, Dec. 23, 2013 — A new technique that stabilizes femtosecond (fs) pulses generated in a microresonator could improve devices dependent on such pulses for applications in telecommunications, broadband spectroscopy and astronomy, among others. Last year, a team from...
Graphene on chip closing the gap with germanium
VIENNA, CAMBRIDGE, Mass., and HONG KONG – Graphene-based photodetectors can efficiently convert IR light into electrical signals, three independent studies have reported. The work “makes it very likely that graphene will soon replace germanium and compound semiconductors in...
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April 2024
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