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FEATURES
High-Speed Photoacoustic Microscopy Captures Processes Within Tissue
Feb 3, 2023 — When Alexander Graham Bell discovered the photoacoustic effect in the 1880s, he might not have envisioned that this technology would ultimately be successfully implemented in biomedical imaging applications such as neuroscience, dermatology, and cancer biology. In the photoacoustic effect, the excitation light is absorbed by molecules in a sample, and the absorbed photon energy slightly elevates the local temperature via nonradiative relaxation, which eventually induces a pressure wave...
BioPhotonics, Apr 2023
Dynamic Light-Scattering Method Could Guide Alzheimer’s Diagnosis and Treatment
Feb 2, 2023 — The early detection of neurologic damage caused by Alzheimer’s disease, before symptoms have appeared, is integral to the development of effective treatments. Early detection, made possible by leveraging dynamic light scattering to identify subtle...
BioPhotonics, Apr 2023
AI Takes Vision-Guided Robotics to the Next Level
Feb 1, 2023 — Vision-guided robotics (VGR) is one of the largest-growing sectors in both the robotics and machine vision markets. While industrial robots are used in a variety of industries, the ability to guide a robot based on information from a machine vision...
Vision Spectra, Mar 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
Photonic Gas Analysis Probes Upgrades in Sources and Detectors
Jan 30, 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...
Photonics Spectra, Mar 2023
Smaller, Simpler Supercontinuum Lasers Illuminate a Bright Future
Jan 27, 2023 — As broadband light sources, supercontinuum lasers are a truly revolutionary technology. While halogen light sources — or even a normal tungsten bulb — can emit a large bandwidth of light, supercontinuum generation (SCG) derives from a...
Photonics Spectra, Mar 2023
Hyperspectral Imaging Boosts Yields in Vertical Farming
Jan 20, 2023 — Vertical farming, also known as sky farming, is the practice of growing food crops in vertically stacked layers in controlled indoor spaces using soilless hydroponic or aeroponic growing methods. Vertical farming does not replace conventional...
Vision Spectra, Mar 2023
Free-Space Optical Communications Soar with the Satellite Sector
Jan 5, 2023 — Free-space optics (FSO) and systems are uniquely valuable in enabling fast and secure connectivity, both in terrestrial and nonterrestrial networks. With major advancements in space optics over the last 20 years, ultrahigh-bandwidth signals now...
Photonics Spectra, Feb 2023
sCMOS Camera Designs Push the Limits on Resolution
Jan 4, 2023 — Applications ranging from astronomy to the life sciences to semiconductor manufacturing and metrology have steadily increased the demand for camera technologies targeting the extreme-ultraviolet (EUV) and even the soft x-ray regimes. Many of these...
Photonics Spectra, Feb 2023
Aptamers Provide Instant Photonics-Based Diagnostics
Jan 3, 2023 — Aptamer-based diagnostics is a new field in the development of technologies for instantly identifying disease. Aptamers are short sequences (oligonucleotides) of DNA or RNA that bind to a specific target molecule. They are typically 20 to 60...
BioPhotonics, Apr 2023
Raman Spectroscopy Identifies Disease Characteristics and In Vitro Structure
Jan 3, 2023 — Since the invention of lasers and their integration into Raman spectroscopy systems, the spectroscopy technique has grown in popularity for use in life science and medical applications as a way to noninvasively analyze a sample and identify the...
BioPhotonics, Apr 2023
On-Board Optics Expand Bandwidth and Reduce Power Use in the Data Center
Dec 29, 2022 — Co-packaged optics (CPO) and on-board optics (OBO) are not novel concepts, per se. The benefits of moving optics closer to the computing cores of data center switches have been clear to systems developers since optical glass fiber was first adopted...
Photonics Spectra, Feb 2023
A New Alexandrite Laser Drives More Sustainable Atmospheric Science
Dec 29, 2022 — As anyone who has ever worked with an alexandrite laser can attest, its lasing medium demands respect. “It has about every problem a laser engineer can imagine,” said Josef Höffner, a scientist at the Leibniz Institute of...
Photonics Spectra, Feb 2023
Optical Photothermal IR Spectroscopy Targets Single-Cell Metabolomics
Dec 16, 2022 — Due to its unique molecular fingerprinting capability, infrared spectroscopy has been widely used to interrogate the overall biochemistry of biological systems. Over the years, this capability has proved the technique’s worth as a powerful...
BioPhotonics, Feb 2023
Acousto-Optic Components Overcome Limitations in Confocal Microscopy
Dec 15, 2022 — Confocal and multiphoton microscopy are commonly used to provide 3D-resolved images of in vitro or in vivo tissue samples without physical sectioning. But there are also inherent trade-offs in the use of these techniques when it comes to imaging...
BioPhotonics, Feb 2023
Lasers Shape a New Future for Additive Manufacturing of Metal Parts
Dec 6, 2022 — Aerospace and automotive manufacturers initially adopted additive manufacturing (AM) methods as a means to rapidly prototype new parts or to fabricate more complex or consolidated components in a single step. They applied additive manufacturing to...
Photonics Spectra, Jan 2023
Beam Profiling Evolves to Keep Lasers in Line with New Applications
JOEL P. WILLIAMS, ASSOCIATE EDITOR Lasers provide many different industries with greater efficiency, less waste, and higher precision, but they are not always as easy to fix as the machines they replace. A blunted drill bit is easier to observe and replace than an underperforming...
Photonics Spectra, Jan 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
New Sensor Materials and Designs Deepen SWIR Imaging Capabilities
Nov 30, 2022 — Imaging in the shortwave infrared (SWIR) range, from 1000 to 2500 nm, offers significant new advantages in an array of applications, from autonomous vehicles to food quality inspection. SWIR photons are scattered less by dust or fog than...
Photonics Spectra, Jan 2023
PICs Set Their Sights Beyond Data and Telecom
Nov 30, 2022 — Due to the strong association that photonic integrated circuits (PICs) have with the data and telecom markets, it is easy to overlook their potential in other verticals — such as health care, agriculture and food production, and automotive...
Photonics Spectra, Jan 2023
Quantum Technology: The Next Little Thing in Photonics
Nov 23, 2022 — The 2022 Nobel Prize in physics was awarded to three scientists, each with a record in quantum research. They were rewarded for discoveries they had made three decades ago, discoveries that paved the way for a new quantum revolution, or Quantum 2.0...
Photonics Spectra, Jan 2023
Selecting the Right Filter Is Critical to SWIR Imaging
Nov 8, 2022 — Shortwave IR (SWIR) imaging has seen a surge in use in recent years, playing an important role in imaging agricultural products, food, pharmaceuticals, and high-heat glass and metal manufacturing. Given the strong absorption of moisture within the...
Vision Spectra, Dec 2022
Inspecting CMOS Image Sensors for Dirt and Defects
Nov 8, 2022 — Automatic optical inspection (AOI) systems provide fast, noncontact, and reliable high-resolution defect recognition for the microelectronics industry and are widely used and incorporated into the industry’s in-line production flow. In-line...
Vision Spectra, Dec 2022
Navigating the Options for 3D Imaging
Nov 3, 2022 — While 3D imaging in machine vision has been applied in key use cases for many years, use of the technology has recently grown and expanded, making it increasingly common in a wider range of applications. The best practices that can help to ensure a...
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