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Thickness Measurement Steps Up its Game
Conducting accurate thickness measurements is essential for ensuring consistent quality of products such as plastic bottles and containers; however, measurement techniques are often invasive, destructive, time-consuming and wasteful. Unlike traditional methods, terahertz (THz) technology offers a nondestructive solution when it comes to thickness measurement. Terahertz photoconductive antennas (THz-PCAs) allow for quick, noncontact thickness measurements of both opaque and translucent
Photonics.com, February 2017
Alliances Set to Strengthen Europe-APAC Trade Relations
Europe has been struggling with the loss of manufacturing and related trade to Asia-Pacific nations, but optimism remains for collaboration between the regions that will drive mutual growth. “We still see that the high-tech manufacturing is in...
Photonics.com, March 2017
As Good as the Real Thing for Military Training
“Fight like you train and train like you fight” is a military maxim. To better do that, the military is turning to virtual, augmented and mixed reality. In virtual reality (VR), digital representations replace the real world, with a...
Photonics Spectra, April 2017
CAOS Smart Camera Captures Targets in Extreme Contrast Scenarios
Imaging electromagnetic radiation is of fundamental importance to a number of fields, from medicine and the biological sciences, to security and defense. Often, demanding contrast imaging scenarios arise that call for a high instantaneous linear...
Photonics Spectra, March 2017
Optical Metrology Techniques Harness Structured Light Beams
As a result of technological advances in recent years, researchers have at their disposal devices capable of tailoring — with almost unlimited freedom — the shape of beams of light. Computer-controlled spatial light modulators (SLMs) and...
Photonics Spectra, March 2017
New 4G Optics Technology Extends Limits to the Extremes
From the advent of the candle to the emergence the first laser diode, there have been numerous advances in light sources. After all, all materials radiate when energized one way or another. Optics, however, have undergone a slow evolution. There are...
Photonics Spectra, March 2017
Compact UVC Laser Shows Promise for Biomedical and Environmental Sensing
Advances in sensor technologies and the more widespread deployment of sensors are continually improving safety, quality of life and industrial productivity. Many of the most reliable chemical, biological and gas sensors are in some way based on...
Photonics Spectra, March 2017
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More Fiber Will Make Healthier Aerospace and Defense
In military and aerospace applications, improving size, weight, power and cost (SWaP-C) is critical. That’s why electronics are being replaced by fiber optics. Fiber is lighter than copper and is immune to electromagnetic interference, a significant...
Photonics.com, March 2017
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For Optical Fiber, More Bandwidth Looms
The world’s data travels largely by fiber, with more being moved than ever before. San Jose, Calif.-based networking giant Cisco Systems forecasts that data traffic will grow 22 percent a year from 2015 to 2020. Little wonder, then, that more fiber...
Photonics Spectra, March 2017
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Graphene Alignment Technique Holds Promise for Nanophotonics
Nanomaterials, such as nano-wires and nanotubes, are designed to have quantum confinement in one or two dimensions so that their properties in other dimensions can be engineered, differing from that of their corresponding bulk material. As such, the...
Photonics Spectra, February 2017
Ultrafast Fiber Laser Opens Doors for Additive Manufacturing
Femtosecond lasers have long been a workhorse in subtractive manufacturing, prized for their unique ability to athermally ablate materials. They are commonly used in surface structuring, drilling and thin-film scribing. However, few thought that a...
Photonics Spectra, February 2017
Spherical Lens Probes Open New Possibilities in Raman Spectroscopy
Since its inception in 1928, Raman spectroscopy has allowed scientists to see a chemical “fingerprint” of material. Using light, substances are identified by the way specific wavelengths interface with a sample and are scattered....
Photonics Spectra, February 2017
Member Exclusive
Big Data Drives Optical Networking Changes
Long driven by telecom, optical networks are now being pushed by large data centers operated by Facebook, Amazon, Google, Microsoft and others. Here, runs are shorter and the emphasis is not on utility-grade reliability, a change from the telecom...
Photonics Spectra, February 2017
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Optics, Tunable Lasers to Move Multiphoton Microscopy Forward
Of the numerous far-field imaging techniques, multiphoton microscopy has proved particularly valuable in many biological studies, providing multimodal images from deep within tissue, as well as label-free images of complex biological structures and...
Photonics Spectra, February 2017
For Glass and Silicon Wafer Cutting, Shorter Pulse Widths Yield Superior Results
In manufacturing of semiconductor microelectronics, displays, medical devices and many other industries, there is an increasing trend toward higher-precision processing. This means cutting, drilling and marking parts with smaller feature sizes and...
Photonics.com, December 2016
Data Centers and Telecommunications
Today’s data centers deliver millions of services, processing terabytes of data per second around the world for billions of devices. Considering the volume, it’s amazing that we ever have a signal. As the need for connectivity increases,...
Photonics Spectra, January 2017
The Revolution Has Just Begun:
Q&A with John Bowers
One of the foremost names in the world of integrated photonics is John Bowers, Ph.D., who is credited with leading a team that successfully demonstrated an electrically pumped hybrid silicon laser a decade ago. That advance has paved the way for the...
Photonics Spectra, January 2017
Defense and Aerospace
When it comes to spacecraft, planes and military gear, weight is all important. That’s understandable, as it costs about $10,000 to put a pound in orbit, in the case of spacecraft. For planes and military gear, there are limits on what can be...
Photonics Spectra, January 2017
Member Exclusive
Medicine and the Life Sciences
Imagine testing for a host of diseases and conditions in a single sample of blood, saliva, urine or even a few tear drops. Cancers, heart conditions, viruses, food allergies and sepsis are just some of the tests that could be carried out using...
Photonics Spectra, January 2017
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Quantum Communications and Computing
Broadband quantum light sources with many frequency modes in a single waveguide show potential for scalable quantum state generation.
Photonics Spectra, January 2017
Photonics West 2017 Presents Largest Comprehensive Expos
SPIE Photonics West 2017 (Jan. 28 to Feb. 2, San Francisco), the largest exhibition and conference in the photonics industry, showcases the most innovative research, products and ideas in the field. For many in the industry, the year truly begins...
Photonics Spectra, December 2016
Breakthroughs Bring THz Spectroscopy, Sensing Closer to Mainstream
The terahertz (THz) electromagnetic spectrum (1 to 10 THz), sitting between the infrared wavelengths on the higher frequency side and microwaves on the lower frequency side, has unique and important properties. THz waves can pass through a number of...
Photonics Spectra, December 2016
OLEDs Step In Where Design Matters
The near-ideal visual characteristics of OLED displays mean OLEDs will thrive as a mainstream display technology in coming years, while their compatibility with flexible and transparent materials is creating a new market for displays.
Photonics Spectra, December 2016
No One-Size-Fits-All Approach to Selecting Optical Coatings
Optical coating design and performance are critical for a growing number of applications in fields as diverse as biomedicine and astronomy. Coatings can perform a variety of functions, from imparting high reflectivity on telescope mirrors, to...
Photonics Spectra, December 2016
Wavefront Sensing Under Unique Lighting Conditions
While the invention of the general principle of Hartmann wavefront sensing goes back to the beginning of the 20th century1, the advent of industrial cameras and micro lenses in the 1970s facilitated broader applications2. Nowadays, Shack-Hartmann...
Photonics Spectra, December 2016
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