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quantum cascade lasers News
DUV Lasers Made with Nonlinear Crystals Enhance Lithography Performance
BEIJING, April 25, 2024 — Argon-fluoride (ArF) excimer lasers — deep ultraviolet (DUV) lasers emitting light with a wavelength of 193 nm — are used in lithography to create precise patterns. However, the limited coherence of conventional ArF excimer lasers hinders their effectiveness in applications requiring high-resolution patterns, like interference lithography.
A Quantum Leap for Sensitive Gas Analysis
Apr 2, 2024 — Far above an oil pipeline, a drone bobs and weaves. The drone, dispatched by Denver, Colorado-based Project Canary, is collecting high-resolution imaging data of the site, while also scanning for any indications that the pipeline is leaking methane....
Berthold Leibinger Awards Honor Laser Research at the Limits
DITZINGEN, Germany — In 2000, Berthold Leibinger, the man who brought laser technology into Germany’s TRUMPF Group, established the Innovation Award — expressed in native German as the “Innovationspreis” — to honor outstanding R&D in...
How AI Is Advancing the Manufacture of Photonic Systems
Oct 1, 2023 — Many trends in the manufacture of photonic systems are well known: miniaturize and integrate components, scale-up batch sizes, and, increasingly, expand automated and sustainable manufacturing. At the same time, quality control remains a priority...
Compact, Single-Mode THz QCLs Get Boost from BICs
SINGAPORE, June 27, 2023 — A team at Nanyang Technological University (NTU) developed an electrically pumped, topological, bulk quantum cascade laser (QCL) that operates in the terahertz (THz) frequency range. The THz QCL is governed by a mechanism known as bound states in...
Photonic Gas Analysis Probes Upgrades in Sources and Detectors
Mar 3, 2023 — The hunt is on for better gas analyzers, driven by growing demands. For instance, hydrogen sulfide, an industrial byproduct, has a permissible worker exposure limit of 20 ppm in a confined space, according to OSHA. Increasingly stringent emission...
Tiny IR Spectrometer Improves Sensitivity, Speed of Liquid Analysis
VIENNA, Sept. 7, 2022 — Analytical chemistry often requires the accurate measurement of concentration changes of substances in liquids, on a timescale of seconds. Particularly in the pharmaceutical industry, such measurements need to be extremely sensitive and reliable. A...
Spectroscopy Takes the Long View on Threat Detection
Mar 1, 2022 — When the Perseverance rover landed in Mars’ Jezero crater on Feb. 18, 2021, it represented not only a leap in the search for life on the red planet but also in the identification of deadly chemicals on Earth. Mounted to the rover’s...
Quantum Cascade Lasers Shift from an Emerging to an Enabling Technology
Jan 5, 2022 — Since the unveiling of the quantum cascade laser (QCL) at Bell Labs in 1994, the technology has evolved — from being simply a cutting-edge field in photonics research to being commercially available in the form of packaged lasers, QCL-powered...
Demand for MIR Photonics Rises on New Gas Analysis Applications
Nov 29, 2021 — Real-time precision gas analysis is critical to a wide range of industries, including medical diagnostics, emissions monitoring, and semiconductor fabrication. The relatively simple molecular structure of most gases makes them ideal candidates for...
Photonics News: Week in Brief: 10/29/21
Oct 29, 2021 — SOUTHBOROUGH, Mass. — Block MEMS was awarded a $2.6 million contract in support of the U.S. Department of Homeland Security’s Science and Technology Directorate to detect vehicle-borne improvised explosive devices (VBIEDs). The program...
Beam Combination Boosts Power for Quantum Cascade Lasers
Sep 1, 2021 — Quantum cascade laser sources offer a compelling option in the MIR range, but they currently deliver limited output power. This drawback is driving growing interest in methods that would allow QCLs to combine their beams passively and in a compact...
Applications for Portable Optical Gas Analyzer Range from Volcanos to Sewers
HAMAMATSU, Japan, Aug. 25, 2021 — Hamamatsu Photonics and the National Institute of Advanced Industrial Science and Technology (AIST) in Tokyo collaborated on an all-optical, portable gas monitoring system for predicting volcanic eruptions with a high degree of sensitivity. In...
Room-Temperature Terahertz Quantum Cascade Lasers
May 28, 2020 — The terahertz (THz) spectral range between the infrared and microwave has long been recognized as an unexploited range of frequency bands. It has considerable potential for application in numerous fields, including communications, imaging,...
Electrically Driven Topological Laser Bypasses Manufacturing Imperfections
SINGAPORE, Feb. 19, 2020 — Researchers from Nanyang Technological University (NTU Singapore) and the University of Leeds (UL) have created what they believe to be the first electrically driven topological laser. The new device has the ability to route light particles around...
Breakthrough in Terahertz Quantum Cascade Lasers
LEEDS, England, Feb. 13, 2020 — A research team from the University of Leeds and the University of Nottingham believe they have found a way of delivering ultrafast modulation, by combining the power of acoustic and lightwaves. They published their findings in Nature...
Infrared Sensors Offer Insights into Invisible Threats
Dec 30, 2019 — Mark Zondlo has an atmospheric chemistry laboratory at Prince-ton University, but you may have a hard time finding him there. Most of his team’s environmental research is conducted in the real world — roaming through America’s...
Terahertz Imaging System on a Chip Offers Speed and Portability
PRINCETON, N.J., July 29, 2019 — An imaging system developed at Princeton University uses lasers small enough to fit on a microchip, and emits and detects electromagnetic radiation at terahertz (THz) frequencies. The new system, which is based on a semiconductor design, uses a...
New High-Power, Tunable THz Laser Is Slated for Space Mission
CAMBRIDGE, Mass., Dec. 20, 2018 — A new terahertz (THz) laser designed by researchers at Massachusetts Institute of Technology (MIT) has demonstrated high constant power, tight beam pattern, and broad electric frequency tuning — three performance metrics that could mean less noise...
Mini-QCL Frequency Combs Provide Solution for Chemical Sensing
VIENNA, Dec. 13, 2018 — Researchers at the Vienna University of Technology (TU Wien) are working with laser frequency combs to enable chemical analysis on a chip. This new patent-pending technology will enable frequency combs to be created on a single chip in a simple,...
CLEO: The Forum for Lasers and Electro-Optics
May 4, 2017 — The Conference on Lasers and Electro-Optics (CLEO), to be held May 14-19, marks its 37th year in 2017. It annually brings together industry players, academia and companies from around the world for technical sessions, special symposia, tutorials,...
Quantum Cascade Laser Breakthrough for Advanced Remote Detection
Oct 3, 2016 — The atoms in a molecule can bend, stretch and rotate with respect to one another, and these excitations are largely optically active. Most molecules, from simple to moderately complex, have a characteristic absorption spectrum in the 3- to...
RPO Awarded Small Business Grant for Chalcogenide Glass IR Development
ROCHESTER, N.Y., Sept. 13, 2016 — Rochester Precision Optics (RPO) LLC has been awarded a grant from the Small Business Technology Transfer (STTR) government program to pursue chalcogenide glass IR optic development for quantum cascade lasers. RPO, after successful completion of...
2014 Faraday Medal Awarded to THz Researchers
LEEDS, West Yorkshire, England, July 1, 2014 — Professors Giles Davies and Edmund Linfield, of the Leeds University School of Electronic and Electrical Engineering, have won the 2014 Faraday Medal in recognition of nearly two decades of work on terahertz science and technology. Terahertz...
More Is Less: Increased Voltage Switches Off Microlasers
VIENNA, June 18, 2014 — Lasers that switch off when their pump power is increased could one day make viable optical switches and logic circuits. Researchers at the Vienna University of Technology, led by professor Stefan Rotter, have demonstrated the phenomenon using a...
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May 2024
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