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Holography Lends a Whole New Dimension to Metrology
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 are driving optical components and systems to be specified to meet ever tighter tolerances. From the design and manufacture to final assembly and alignment of optical assemblies, precision metrology plays a crucial role in satisfying quality standards...
Photonics Spectra, July 2023
China’s Industrial Laser Market Shows Post-Pandemic Recovery
The Chinese economy was on a roller coaster in 2022 but evened out at the end to grow its gross domestic product by 3%, which is very slow growth by China’s standard. The bright side, however, was that the country’s high-tech manufacturing...
Photonics Spectra, June 2023
Quantum Leaps into the Imaging Market
Quantum ghost imaging was less than two decades old when the U.K. government launched the £1 billion Quantum Technologies Program in 2016. The program established four hubs dedicated to various fields in quantum research and development. One of...
Photonics Spectra, June 2023
On-Chip Lidar Sheds Cost, Size, and Power Use to Expand Adoption
There are a number of applications for which 3D sensing is rapidly emerging as a critical sensing modality. 3D and 4D sensors are arising in autonomous vehicle applications because they are propelled by products that are being developed for advanced...
Photonics Spectra, June 2023
Fiber Lasers Scale Up Output Powers and End Markets
High-power fiber lasers are a versatile and powerful tool for a wide range of industrial applications, from cutting and welding to defense and beyond. Advancements in laser head design, beam optimization, and wavelength flexibility have caused fiber...
Photonics Spectra, June 2023
Dynamically Tunable Pixels Give the Future of Displays a Refresh
Considering that the average American spends over seven hours a day looking at screens, it is no wonder that the global display industry was worth a staggering $168.4 billion last year. Thanks to the emergence of wearable technology and the largely...
Photonics Spectra, May 2023
By the Numbers: Photon Counting and Number Resolution
Light transmits information about its emitter (source) and the medium of propagation. If this information is relevant, the light can be detected for analysis — and it has been detected with increasing levels of sensitivity and resolution over...
Photonics Spectra, May 2023
Polymer Optics Target Complex Imaging Systems
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
Pixel Correction Advances Next-Generation Displays
In 2017, Clay Bavor, then vice president of Google’s AR/VR division, spoke for all AR/VR device makers when he said, “We need pixels. Way, way more pixels.”1 The display industry has more than risen to that challenge in the...
Photonics Spectra, May 2023
Multifield Imaging Enhances Detectability at Speed
Multifield imaging is a new imaging technique that enables the simultaneous capture of multiple images under various lighting conditions. Coupled with time delay integration, this emerging imaging technique can overcome many of the limitations of...
Photonics Spectra, May 2023
Photovoltaics Power an Indoor Revolution
Readers of a certain age may recall getting through math and science courses with the assistance of a trusty solar-powered calculator that could harvest just enough ambient light from the classroom to power its rudimentary electronics and LCD...
Photonics Spectra, April 2023
Smaller Optical Gyroscopes Navigate into Broader Markets
The RQ-4 Global Hawk, Northrop Grumman’s high-altitude remotely piloted aircraft, has a maximum takeoff weight of 32,250 lb. The platform’s massive size affords it the ability to carry a Kearfortt airborne navigation system, which...
Photonics Spectra, April 2023
Nuclear Fusion Drives Laser Development
It is a rare event when a successful experiment in basic research makes it to the evening news. In December 2022, the U.S. secretary of energy announced a breakthrough in laser-based nuclear fusion. The news was covered in all major media around the...
Photonics Spectra, April 2023
Programmable Photonic Chips Adapt PICs to Multiple Futures
While electronics are perfect for performing fast calculations, photonics are ideal for moving information around. A major drawback of the latter, however, is the slow and costly development process for new photonic integrated chips, hampering their...
Photonics Spectra, April 2023
Photonic Gas Analysis Probes Upgrades in Sources and Detectors
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, March 2023
Smaller, Simpler Supercontinuum Lasers Illuminate a Bright Future
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, March 2023
Metalenses Scale Up to Target the Market for Small Optics
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, March 2023
sCMOS Camera Designs Push the Limits on Resolution
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, February 2023
On-Board Optics Expand Bandwidth and Reduce Power Use in the Data Center
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, February 2023
A New Alexandrite Laser Drives More Sustainable Atmospheric Science
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, February 2023
Free-Space Optical Communications Soar with the Satellite Sector
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, February 2023
New Sensor Materials and Designs Deepen SWIR Imaging Capabilities
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, January 2023
PICs Set Their Sights Beyond Data and Telecom
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, January 2023
Beam Profiling Evolves to Keep Lasers in Line with New Applications
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, January 2023
Quantum Technology: The Next Little Thing in Photonics
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, January 2023
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