More Test & Measurement Articles

Fiber-optic spectrograph enables Google street view of galaxies


A new instrument based on bundles of optical fibers is giving Australian astronomers the first 'Google street view' of the cosmos--incredibly detailed views of huge numbers of galaxies.

Hooked onto glasses, small optical pupillometer aims to to detect diabetic autonomic neuropathy sooner

Hooked onto glasses, small optical pupillometer aims to detect diabetic autonomic neuropathy sooner

07/28/2014 A group of Taiwanese researchers has developed a wearable optical pupillometer that can automatically detect an early complication of diabetes (autonomic neuropathy, or damage to the involuntary nervous system) sooner, when it ...

Point-by-point UV exposure makes optimum fiber-optic long-period gratings


Researchers at Cranfield University have developed a process to reproducibly fabricate long-period gratings (LPGs) with phase-matching at the turning point.

Strategies in Biophotonics announces keynote speaker lineup


The impressive keynote speaker lineup for Strategies in Biophotonics includes Robert S. Langer, Greg Olsen, Gregory Altshuler, and Aydogan Ozcan.

Raman technique could lead to much higher-speed cell and tissue imaging

07/22/2014 A research team from the National Institute of Standards and Technology (NIST), working with the Cleveland Clinic, has demonstrated a dramatically improved technique for analyzing biological cells and tissues based on character...

Fluorescence-based biosensor can diagnose Type 1 diabetes at low cost

07/22/2014 Researchers have developed a fluorescence- and microchip-based biosensor device for diagnosing Type 1 diabetes that could improve patient care worldwide and help researchers better understand the disease. What's more, the ...

Tabletop femtosecond laser system takes movies of acetylene as it isomerizes

07/21/2014 François Légaré's team at the INRS Énergie Matériaux Télécommunications Research Centre Montreal, Quebec, Canada) has taken a high-resolution molecular movie of a chemical reaction with a spatial and temporal resolution greatly...
Lasing plasmon nanocavity sensor detects explosives at the sub-part-per-billion level

Lasing plasmon nanocavity sensor detects explosives at the sub-part-per-billion level

07/20/2014 A team of researchers led by Xiang Zhang, professor of mechanical engineering at the University of California, Berkeley, has created a lasing plasmon explosives-sniffing nanosensor that is free of metal losses and operates at a...
Lighting lab setup predicts level of driver discomfort caused by LED streetlights

Lighting lab setup predicts level of driver discomfort caused by LED streetlights

07/18/2014 A team of researchers from China and the Netherlands has developed a way to evaluate the human impact of uncomfortable glare caused by LED road lighting.
Gigahertz-rate laser oscillator could replace quartz oscillators for wristwatches, other devices

Gigahertz-rate laser oscillator could replace quartz oscillators for wristwatches, other devices

07/18/2014 Researchers in the Caltech laboratory of Kerry Vahala, a Caltech professor, have developed a method to stabilize microwave signals in the gigahertz range using a pair of laser beams as the reference, in lieu of a crystal.
Low-cost phosphorescent OLEDs aim for near-100% efficiency

Low-cost phosphorescent OLEDs aim for near-100% efficiency


Jinsang Kim, a professor of materials science and engineering at University of Michigan (Ann Arbor), and his team have developed bright, metal-free phosphorescent OLEDs.

Digital Surf acquires Image Metrology to strengthen image processing business


Digital Surf, which makes surface imaging and metrology software for microscopes and profilers, has acquired Image Metrology, a provider of nano- and microscale image processing software.

CARS method amplifies optical signature of single molecules about 100 billion times


Nanophotonics researchers at Rice University have created a unique sensor that amplifies the optical signature of molecules by about 100 billion times—and has potential utility in biosensing.

Nominations open for EPIC Phoenix Award (Entrepreneurship in Photonics)


The European Photonics Industry Consortium (EPIC) Phoenix Award is presented annually to a European company that exemplifies the challenges and merits of photonics entrepreneurship.

Lidar-equipped, light-carrying drones create optimum 'rim lighting' for moviemakers

Lidar-equipped, light-carrying drones create optimum 'rim lighting' for moviemakers

07/11/2014 Massachusetts Institute of technology (MIT; Cambridge, MA) and Cornell University (Ithaca, NY) have created a photographer's and moviemaker's lighting system that includes a small quadricopter drone carrying a white-light sourc...

Michigan Aerospace interferometry system headed to International Space Station


Michigan Aerospace Corporation delivered a precision interferometric optical system that will be sent to the International Space Station (ISS) via a SpaceX Falcon 9 launch vehicle in mid-September 2014.

Business Forum: The laser-focused society in the photonics community


This is the third in a series of interviews with leaders of our professional societies to give us a better understanding of the ecosystem
of our industry.

Microstructured Fibers: Superdots enhance microstructured-fiber properties and remote-sensing capabilities

07/08/2014 If the holes in microstructured fibers are filled with extremely bright rare-earth-doped nanocrystals (Superdots), the tailored-fiber geometry and bright particles significantly increase nanoparticle detection sensitivity in di...

Beam Characterization: High-power fiber lasers drive noncontact-measurement techniques


The beam focus of high-power fiber lasers can be characterized via imaging of Rayleigh scattering in air-an indirect detection method that avoids damage to detectors due to ultrahigh-power beams.

Confocal Microscopy for Industrial Applications: Microscopy reveals effects of micro-electric discharge machining on stainless steel

07/08/2014 Laser scanning confocal microscopy can be used to precisely measure the topographies of stainless-steel surfaces machined by micro-electric discharge machining to scales of 200 nm laterally and tens of nanometers vertically.

Featured Laser Videos


Opportunities in the Mid-IR

The technology for exploiting the mid-IR is developing rapidly:  it includes quantum-cascade lasers and other sources, spectroscopic instruments of many...

Fiber Optic Sensors – Fundamentals, Principles and Applications

In this webcast, sponsored by Nufern, we focus on optical fiber sensing technology.  Fundamental concepts will be presented first, followed by the under...

Infinite Possibilities – Easily Combining Scanner and Servo Motion

High precision motion control applications such as laser micromachining, 2-photon polymerization, glass panel and film patterning, and additive manufacturing...

Solutions in Search of Problems: What Spectroscopy Can Do for You

Spectroscopy is so pervasive that most of us take it for granted. We use it for routine laboratory and test measurements without appreciating how those same ...

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Scalable and modular diode laser architecture for fiber coupling that combines high-power, high-brightness, and low weight

The demand for high-power and high-brightness fiber coupled diode laser devices is mainly driven by applications for solid-state laser pumping and materials ...

Miniature Spectrometers for Narrowband Laser Characterization

In less than 60 years, lasers have transformed from the imagined “ray gun” of science fiction into everyday reality. Used everywhere from bar code scanners t...

Ultra-narrowband optical bandpass filters with large format and improved temperature stability

Hard coated ultra-narrowband optical filters made using modern plasma processes offer much improved transmission, temperature stability and out of band block...

Moxtek ICE Cube™ polarizing beamsplitter

The Moxtek ICE CubeTM polarizing beamsplitter (PBS) product performance is compared to a MacNeille PBS cube.  Cube beamsplitters are found in a variety ...

Technical Digests

HIGH-ENERGY LASER COATINGS: Eliminating laser damage proactively

High-power and high-energy thin-film antireflection coatings for laser optics require careful design and manufacture to enable the coatings to survive the ve...
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LIBS -- spectroscopy for remote identification of materials

Laser-induced-breakdown spectroscopy (LIBS) uses a pulsed laser to vaporize a small sample of a specimen, which is then spectrally measured. But it only take...
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Laser Tools for Materials Processing

Laser materials processing requires not only the appropriate industrial laser system, but also a host of “tools” to ensure that the laser beam is delivered t...
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