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Resistance Spot-Welding Gun Meets Fiber Laser
The high-volume production environment in the automotive industry is one where resistance spot welding and laser remote welding are well-established technologies. Both technologies have pros and cons. For laser remote welding, the main advantage is the significant cycle-time reduction due to almost complete elimination of idle times and the advantages of laser-welded seams. For resistance spot welding, one of the pros compared to laser welding is the integrated clamping technology, which comes
Photonics.com, January 2014
Ultrafast Fiber, Disk Lasers Are Game Changers for Micromachining
When applying picosecond and femtosecond lasers for industrial applications, there isn’t just one ultrafast laser for all applications. Manufacturers need an ultrafast laser portfolio with different powers, pulse energies, wavelengths and...
Photonics.com, January 2014
Eyewear Helps Thwart Laser-Pointer Attacks
A basic news search for “laser pointer” returns a disturbing number of hits detailing incidents in which pilots or train conductors, law enforcement personnel, politicians and athletes have been targeted by readily available laser...
Photonics Spectra, January 2014
Selecting Industrial Laser Optics
Lasers are one of the most significant and prevalent inventions of the 20th century. They have created entire industries, optimized many processes and enabled thousands of applications ranging from CD players to nuclear fusion research. It is...
Photonics.com, January 2014
Accurate Low-Energy Measurement Enhances Photonic Devices
Time-to-digital converters provide highly accurate measurements for photonics applications – with less energy consumption and lower overall costs. Measuring a quantity or value through digital monitoring of extremely small increments of time...
Photonics Spectra, January 2014
Image Quality Testing Improves as Cameras Advance
An overview of state-of-the-art technology for image quality testing of mass-produced camera modules for consumer devices, including recent developments and new challenges. Image quality testing of complete cameras and assembled camera modules is...
Photonics Spectra, January 2014
Trends in Imaging
Advanced data mining, 3-D video imaging techniques and image fusion are bringing to fruition superaccurate real-time diagnostics, brain mapping and futuristic driverless cars. Developments in photonics have changed the landscape of imaging in...
Photonics Spectra, January 2014
Trends in Lasers
For lasers, the trends are fast and powerful – literally. Shorter pulse widths and greater power are future directions for the technology. On the horizon are new lasing materials and new concepts to produce laserlike light sources. The outcome...
Photonics Spectra, January 2014
Trends in Optics
Advances in optics in the past year or two have ranged from promising new optical materials to innovations in existing technologies. From optical coatings and add-on kits to quantum dots and metadevices, the scope of progress is as extensive as it...
Photonics Spectra, January 2014
Where the Jobs Are Now
As I contemplated today’s photonics job/employment environment, and the business climate and outlook for 2014, I went back to the “Where the Jobs Are” article I wrote for the August 2012 issue of Photonics Spectra. One difference...
Photonics Spectra, January 2014
Designing Fiber Amplifiers for Short and Ultrashort Pulses
Fiber amplifiers are in some respects ideal for amplifying short and ultrashort pulses. But serious limitations arise, particularly from nonlinearities, and many aspects must be checked for optimized amplifier systems designs. In several respects,...
Photonics Spectra, December 2013
For Lasers, No Vibrations Allowed
Efficient use of a laser beam is dependent not only on the power of the laser source and beam quality, but also on its precise guidance. Short- and ultrashort-pulse lasers are used to remove materials on an atomic level for high-precision...
Photonics.com, December 2013
InP PICs Enable High-Efficiency Optical Transceivers
Indium phosphide-based photonic integrated circuits (PICs) eliminate optical loss between different functional elements and use high-efficiency optical modulators to enhance performance. They are indispensable in the development of the...
Photonics Spectra, December 2013
Interferometry Offers Accurate Wavelength Measurements
New solutions for fast and accurate wavelength measurements use interferometer technology, which offers a number of benefits compared with classic spectrum analysis. As soon as highly accurate wavelength measurements are required, calibration and...
Photonics.com, December 2013
NIR Helps Lower Costs, Optimize Processes
Near-infrared spectroscopy moves out of the lab and into manufacturing. Economic volatility continues to put pressure on manufacturers, increasing the focus on cost reduction and process optimization across applications. To make improvements in...
Photonics Spectra, December 2013
Photonics Is About to Get Flatter
Graphene holds great potential for a variety of applications, from photovoltaics to lasers and sensors. Two-dimensional materials could soon provide useful photonic solutions for our 3-D world. Graphene – a single layer of carbon – might...
Photonics Spectra, December 2013
Time-Resolved SRS Spectroscopy Facilitates Combustion Research
A new spontaneous Raman scattering spectroscopy technique uses an intensified EMCCD sensor to perform time-resolved combustion diagnostics. To perform successful time-resolved spontaneous Raman scattering spectroscopy in combustion, one critical...
Photonics Spectra, December 2013
Tough Times Call for European PV Manufacturing to Step Up
With a tough economic market and global differences in government subsidies, it has never been more important for European PV makers to focus on their production techniques to make solar even more profitable. Over the past 20 years, the European...
Photonics.com, December 2013
Amplitude-Modulated Sensors Could Save Pilots from Wire Hazards
AM scanning laser rangefinder sensors could make less costly, lighter-weight systems for helicopter-mounted wire-warning systems. Wires represent a significant hazard for low-flying helicopters: Collisions with unobserved wire obstacles can result...
Photonics Spectra, November 2013
Big Photonics Advances Build and Power Big Telescopes
Bigger aspheric mirrors enable astronomers to see farther into space – but they require special designs. For astronomers, bigger is better: In general, the scientific value of a telescope scales to the fourth power of its diameter. So,...
Photonics Spectra, November 2013
CCD Sensors Tailored to Space Applications
Designing image sensors for the ESA’s Euclid mission demonstrates the importance of customization for specialty uses and harsh environments. Adapting commercial electronic parts for space applications usually consists of little more than the...
Photonics Spectra, November 2013
Dual- and Triple-Band AR Coatings Enhance IR Systems
Advanced dual-band coatings improve camera performance in the 3- to 5-µm and 8- to 12-µm spectral regions. Dual-band infrared camera systems allow the 3- to 5-µm and 8- to 12-µm spectral regions to be viewed and compared....
Photonics Spectra, November 2013
Silica-Based Fiber Boosts Broad-Spectrum Spectroscopy
Fibers with a broad optical spectrum are useful in spectroscopic applications because they enable the collection and analysis of more information over a greater wavelength range. A variety of spectroscopic applications require light transmission...
Photonics Spectra, November 2013
Space Lasers Set to Protect Earth, Project Data
From obliterating asteroids to nudging space trash, lasers in space are becoming every bit as futuristic as they sound. Lasers in space have long been a science-fiction writer’s delight, but with current projects such as LightForce and DE-STAR...
Photonics Spectra, November 2013
Excimer-Laser Metrology Improves Lithography Process Control
Process- and technology-specific correlations can be established for better process control, and to prevent excursions. As Moore’s law marches on, semiconductor manufacturers rely on advances in photolithography – the use of 193-nm ArF...
Photonics Spectra, October 2013
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