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OPTICS FEATURES
How to Preserve Your Laser Optics Against UV Degradation Aug 4, 2023 — Ultraviolet laser optics tend to have limited lifetimes, due primarily to two processes: laser-induced contamination (LIC) and UV fatigue. LIC is caused by the deposition of unwanted material on the surface of the optic, whereas UV fatigue results from the breakdown of the optic due to cumulative exposure to UV light. Both degrade the performance of optics over time until the effects become intolerable. Long-term experiments on UV optics at 355 nm in various environments have revealed key
Photonics Spectra, Sep 2023
Chalcogenide Glass Sharpens the Outlook for Infrared Imaging Aug 4, 2023 — Chalcogenide glasses — more commonly known as chalcogenides — have been around for some time and offer several benefits over other IR optical materials. They are comparatively lightweight, offer excellent thermal properties, and can be precisely...
Photonics Spectra, Sep 2023
Manufacturing Methods Make Freeform Optics More Accessible Aug 4, 2023 — From applications in ophthalmology, endoscopy, and microscopy — to use in head-up displays, lidar systems, unmanned aerial vehicles, and satellites — freeform optics are enhancing the performance of existing imaging systems and are key...
Photonics Spectra, Sep 2023
Optical Workforce Training Comes into Focus Jun 28, 2023 — Ten years ago, Tony Amarel’s recruitment firm in Rochester, New York, rarely heard from clients who were willing to pay a fee to fill optical technician positions. But by 2021, the six-county Rochester metropolitan area saw the number of jobs...
Photonics Spectra, Aug 2023
Holography Lends a Whole New Dimension to Metrology Jun 5, 2023 — All optical imaging systems, from smartphone cameras to extreme-ultraviolet photolithography optics, are under increasing pressure to support higher resolution, broader spectral range, or higher sensitivity in low-light applications. Such demands...
Photonics Spectra, Jul 2023
Polymer Optics Target Complex Imaging Systems Mar 27, 2023 — Polymer optics, also known as plastic optics, are ideal for reducing the footprint and weight of optical systems and assemblies, further fueling the demand for polymer optics in end uses in which these characteristics are important, such as in...
Photonics Spectra, May 2023
Metalenses Scale Up to Target the Market for Small Optics Jan 31, 2023 — Earlier this year, the first wave of smartphones equipped with STMicroelectronics’ second-generation direct time-of-flight (TOF) sensor reached the consumer market. The sensor includes planar metasurface optics. The metalens-enabled sensor...
Photonics Spectra, Mar 2023
Photonics Brightens the Future for Augmented Reality Dec 5, 2022 — Out in the Gulf of Mexico, an offshore oil rig experiences a critical mechanical failure. The engineers with the expertise to fix the problem are back on the mainland, and flying them to the site on short notice would be costly and logistically...
Photonics Spectra, Jan 2023
The Rise of Micro-Optics Shows No Sign of Slowing Dec 4, 2022 — Micro-optics are a key enabler in the modern world, spurring advancements in consumer electronics, automotive lighting, and the next generation of autonomous vehicles. As demand grows from sectors far and wide, new fabrication approaches —...
Photonics Spectra, Jan 2023
Fused Silica: A Transparent Look at a Complex Material Nov 2, 2022 — Many users of fused silica may ask why there are so many different grades of the glass. How much variety can you expect from the simple chemical formula SiO2 — and does this wide variety have any effect on real-world optics? Despite fused...
Photonics Spectra, Dec 2022
3D Printing Creates New Optical Possibilities Aug 25, 2022 — Emerging 3D printing technology is transforming once-impossible designs of optical components into optimized elements that can improve medical instruments, research tools, communications systems, and consumer devices. In 3D printing, an additive...
Photonics Spectra, Oct 2022
Optical Frequency Combs Reach Beyond Research Aug 25, 2022 — Optical frequency combs (OFCs) measure the oscillations of light directly, delivering a level of precision superior to any other measurement technique. This feature of direct measurement is being exploited in applications ranging from metrology to...
Photonics Spectra, Oct 2022
Advancements in Diffraction Grating Aim to Change the Rules Jul 25, 2022 — Because they separate light into its spectral components, diffraction gratings lie at the heart of modern spectrometers, hyperspectral imagers, optical coherence tomography systems, and similar instruments. In the future, gratings may improve...
Photonics Spectra, Sep 2022
Sputter-Coated Optics Improve Machine Vision and Remote Sensing Jul 13, 2022 — For biomedical instrumentation applications such as fluorescence microscopy and Raman spectroscopy, sputter-coated thin-film interference filters deliver exemplary performance. These filters also enhance imaging system performance for applications...
Photonics Spectra, Sep 2022
Large Aspheres Manage High-Power Laser Energy Jul 11, 2022 — Laser system output power is constantly increasing. The maximum attainable peak power of laser pulses has increased by a factor of about 1000 every 10 years1. This pace of progress is similar to the rapid advancements in integrated circuits...
Photonics Spectra, Sep 2022
STEM Programs Struggle to Satisfy the ‘Endless Demand’ for Photonics Talent Jun 29, 2022 — Earlier this year, at a major recruitment event at the University of Arizona’s Wyant College of Optical Sciences (OSC), the job openings listed outnumbered students in attendance. This imbalance exemplifies the immense pressure STEM programs...
Photonics Spectra, Aug 2022
Photonic Wire Bonding: Using Lasers to Integrate Lasers Jun 27, 2022 — Just as electronic integrated circuits have revolutionized computing, photonic integrated circuits (PICs) are poised to transform applications such as high-speed optical communications, optical signal processing, optical sensing, and quantum...
Photonics Spectra, Aug 2022
Precision Optics Shape Both the Light and the Limits of High-Power Lasers Mar 3, 2022 — High-power lasers have become a standard and ubiquitous tool in many industrial applications, due, in part, to the precisely controllable energy that they provide. But “high power” can be a challenging term to parse, and it often needs...
Photonics Spectra, Apr 2022
LEDs and Optical Filters Expand Live-Cell Imaging Capability Feb 7, 2022 — The light source of a wide-field fluorescence microscope is often overlooked by scientists who perform live-cell imaging experiments. However, innovations such as transistor-transistor logic (TTL) triggering, which enhances on/off speed, and inline...
BioPhotonics, Apr 2022
How Optical Networks Are Enabling the 5G Advantage Jan 27, 2022 — The fifth generation of broadband cellular network technology (5G) offers a more than tenfold increase in speed compared to 4G. It handles a wider variety of devices, provides greater reliability, and operates with lower latency. These benefits...
Photonics Spectra, Mar 2022
Metamaterials Unveil an Expanding Array of Optical Applications After 20 years in development, optical metamaterials are finally on the cusp of seeing broader adoption in consumer and automotive markets. Prepare for optical metamaterials to enter our pockets, kitchens, cars, and offices in the next three to five years. That’s what experts in the field predict. Thanks to rapid maturation of technology and falling production costs, the doors are...
Photonics Spectra, Jan 2022
Design for Manufacturing: Understanding Asphere Tolerances Is Key Dec 28, 2021 — The production of optical elements has changed significantly over the last two decades, mostly due to the ever-increasing demand for optical systems from end markets, including consumer products, optical communications, laser materials processing,...
Photonics Spectra, Feb 2022
Optical Filters Help PCR Tests Quickly Diagnose COVID-19 Dec 10, 2021 — The need to implement technology that can rapidly diagnose diseases and pathogens accurately has never been greater than it is now, as the COVID-19 virus continues to spread around the world. Prior to 2020, most people working outside the field of...
BioPhotonics, Feb 2022
Fiber Optic Sensors Are Wired for Growth with Infrastructure Improvements Dec 3, 2021 — In October 2021, a 40-year-old undersea pipeline off the coast of California ruptured, releasing more than 130,000 gallons of crude oil into the Pacific Ocean. The spill polluted the ecosystem, stifled local economic activities such as fishing and...
Photonics Spectra, Jan 2022
Accelerating the Manufacture and Repair of Micro-LED Displays Oct 27, 2021 — While LCD panels are passive displays that need backlight illumination, OLEDs and LEDs are active elements that eliminate the need for backlighting by emitting their own light. OLEDs have their own drawbacks compared to LEDs, most notably the...
Photonics Spectra, Dec 2021
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