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VCSEL Advancements Power 3D Sensing
iStock.com/NeoLeo An innovative VCSEL design, featuring multiple active regions separated by tunnel junctions, boosts efficiency and output power while optimizing beam divergence. The emergence of 3D sensing in the consumer, industrial, and automotive markets has led to a second significant boom for VCSELs, following their initial use in high-bandwidth data communications. Today, VCSELs can be found in an increasingly broad range of applications, including wearables, medical,
Photonics.com, September 2021
Photonics Scores a Touchdown for Space Exploration
As the Apollo 11 astronauts were initiating the first human-crewed landing on the moon, Neil Armstrong looked out of the module’s small window and, rather than observing a relatively flat landing zone on the lunar surface, he saw a boulder...
Photonics Spectra, July 2021
The Vision Spectra Conference
The first-ever Vision Spectra Conference, set for July 20-22, will feature dynamic speakers ranging from upand- coming entrepreneurs to recognized technology innovators. The European Machine Vision Association (EMVA) and the Association for...
Photonics Spectra, June 2021
Speckle-Free Lasers Sharpen 3D Machine Vision
Quality assurance systems utilizing 3D machine vision technologies can inspect products, detect defects, measure all dimensions of a part simultaneously, and locate randomly oriented items, among other tasks. For tasks requiring height, length, and...
Photonics Spectra, July 2021
Why SWIR Imaging? Insights on Its Practical Implementations
Originally developed for applications in defense, infrared scanning technology targeting the shortwave infrared (SWIR) band has become more widely adopted in many other applications over the last decade. From predicting water stress or detecting...
Photonics Spectra, July 2021
UV-VIS Spectroscopy Extends from the Lab to Outer Space
UV-VIS spectroscopy has been a robust spectroscopic modality since at least the early 1940s. That’s when National Technical Laboratories (now Beckman Coulter) released its DU spectrophotometer — one of the first widely available, tabletop-size...
Photonics Spectra, July 2021
As DUV Lithography Rallies, Demand for ArF Lasers Follows
Four years ago, several leading-edge chip foundries raced to roll out extreme-ultraviolet (EUV) lithography processes for sub-14-nm chips that were intended to succeed the preceding generation of chips. Then, in the summer of 2018, GLOBALFOUNDRIES...
Photonics Spectra, July 2021
Tracing the Evolution of Additive Optics Fabrication
Optical components have traditionally been created through subtractive manufacturing approaches that are mainly based on turning and molding methods. Milling, for example, is an affordable way to rapidly develop a first rough prototype. Milling is...
Photonics.com, September 2021
Beam Profiling: What Is Your Laser Not Telling You?
While it may seem intuitive that turning up the power on a laser will produce faster results in a materials processing operation, beam measurement tools often reveal that this only distributes the laser’s energy over a larger area, resulting...
Photonics Spectra, June 2021
The Food Industry’s Appetite for Hyperspectral Imaging Grows
If the old maxim “you are what you eat” has any truth to it, then it becomes critically important to ensure that the food you consume is safe and of suitable quality. To this end, the U.S. Department of Agriculture (USDA) spent $1.1 billion in 2019...
Photonics Spectra, June 2021
Camera Selection for Low-Light Imaging
Fluorescence microscopy is a broadly used term, with applications ranging from basic life science, such as time-lapse cell viability assays, to sophisticated techniques in which a very few photons or single molecules are detected and localized by...
Photonics Spectra, June 2021
Laser Technology Enhances and Expands the Medical Toolkit
Medical lasers have been used for decades in surgical contexts. In recent years, the development of compact, easy-to-use, and often self-contained modules has opened doors for new or enhanced procedures in ophthalmology, dentistry, dermatology, and...
Photonics Spectra, June 2021
Raman Spectroscopy Dishes Up Solutions for the Food Industry
As people, we have a complex relationship with food. We want it to be simple, cost-effective, and convenient. But we also savor gourmet foods prepared with the finest ingredients available. The quality of high-end ingredients depends on their...
Photonics Spectra, May 2021
Ultrafast Lasers Are Quickly Catching Up with Industry Demand
With pulse lengths down to the picosecond realm and beyond, ultrashort-pulse lasers — often called ultrafast lasers — have been deployed as scientific research tools for decades. The fields of femtochemistry, spectroscopy, and...
Photonics Spectra, May 2021
How Far Down the Road Is the Autonomous Vehicle?
First conceived by editors of Scientific American magazine, the dream of self-driving cars — known today as autonomous vehicles (AVs) — recently passed its 100-year anniversary. With the phenomenal advancements in technology during the...
Photonics Spectra, May 2021
Managing Temperature-Based Performance Drift for Coatings
What happens when optical coatings get very cold? There should be little difference in a thin film’s optical performance at room temperature test conditions versus its use conditions. But this is not always the case. Performance varies at different...
Photonics Spectra, May 2021
Molecular Laser Opens Unique Spectral Window
The terahertz spectral region, which falls between the microwave and infrared ranges, is one of the most promising regions of the electromagnetic spectrum for research and industry, but it is currently underutilized in these areas. There is no...
Photonics.com, June 2021
Thermal Imaging Takes the Temperature of New Applications
While thermal infrared imaging technology was once limited to defense and government-funded applications, it has become more mainstream over the past few decades. The growing awareness of the technology’s industrial benefits has primarily been...
Photonics Spectra, April 2021
Freeform Micro-Optics Reel Off New Applications
Much attention is given to freeform optics fabrication, which has improved the performance of traditional micro-optic imaging systems1. But replicated freeform micro-optics are also fostering advancements across a broad spectrum of applications...
Photonics Spectra, April 2021
Member Exclusive
High-Energy Lasers Advance Defense and Industry
Ever since the laser first appeared in the public consciousness, popular culture has reframed it as a prospective weapon of infinite range and power. This is largely because popular culture is unshackled from the concerns of engineering and physics....
Photonics Spectra, April 2021
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Worsening Wildfires Spark Photonics Demand and Innovations
In October 2016, a downed powerline sparked a wildfire that raged for two weeks and destroyed more than 18,000 acres in the Pike and San Isabel National Forests west of Pueblo, Colo. The so-called Junkins fire ended up destroying nine homes and 17...
Photonics Spectra, April 2021
Photonics Reduces Size, Weight, and Power for Defense Systems
Many modern troops go to battle carrying up to 80 lbs of gear per soldier. Approximately 20 lbs of this weight can come from batteries for radios and electro-optics. Reducing a soldier’s burden improves mobility and mission effectiveness and reduces...
Photonics Spectra, April 2021
SOI Technology Lights Up the Next Wave of Photonics Solutions
Silicon has been the mainstay of micro-nanoelectronics since the late 1950s, being widely adopted for electronic devices and complementary metal oxide semiconductor (CMOS) technologies. In the early years of the semiconductor industry, germanium was...
Photonics Spectra, February 2021
Embedded Vision Is Streamlined for Application on a Massive Scale
Compact, efficient, and highly application specific, embedded vision technology increasingly offers performance and price points that would have been impossible to achieve only a few years ago. The steady advancement in capabilities has been driven...
Photonics Spectra, March 2021
Multiband Optical Filters Are Telecom Networks' Multitaskers
Multiband optical filters have long been used in applications such as fluorescence spectroscopy, astronomy, and 3D cinema, to name a few. The ability to combine more than one spectral band into a single optical filter can enable flexibility of...
Photonics Spectra, March 2021
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