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High-Throughput Measurement Speeds Production of Large Optics
Dynamic laser interferometry is an established technique for measuring optical-grade surfaces in the presence of vibration and air turbulence. Unlike traditional laser interferometry, dynamic interferometry does not require expensive vibration isolation systems, extensive mechanical coupling between the instrument and test optic, or air flow abatement. The method provides a cost-effective means of assessing the quality of large optics, often 1 m in diameter or larger, even when the optic m...
Photonics Spectra, May 2010
A better eye in the sky
For military imaging, a space-borne perch offers an overwhelming advantage, said John Silny of Raytheon Co. “You have the highest vantage point, the ultimate high ground, to view from.” Imaging from orbit is changing, as can be seen...
Photonics Spectra, April 2010
Advantages of Polymer and Hybrid Glass-Polymer Optics
Polymer materials with optical properties are being thrust into the design forefront for new, sophisticated electro-optical applications, enabling commercial markets and applications including medical disposables, bar-code scan/recognition, security...
Photonics Spectra, April 2010
Crystal-Clear Research
Exciting new findings about crystals – on subjects as diverse as diamonds, peptide nanofibers and colloids – could prove useful in science and industry, perhaps leading to new nanoscale constructs and better electronics. Diamond in...
Photonics Spectra, April 2010
Efficient and uniform illumination with microlens-based band-limited diffusers
Uniform illumination over a certain target area is a common requirement in many applications, and oftentimes schemes must be devised to ensure that this requirement is achieved. In display systems, for example, light that illuminates a viewing...
Photonics Spectra, April 2010
Judging ARPA-E
Created under the Bush administration, the Advanced Research Projects Agency – Energy (ARPA-E) actually set up shop only last year, when it received $400 million in funding under the American Recovery and Reinvestment Act. Its director and...
Photonics Spectra, April 2010
Optics in the UK needs government backing for success
From Newton’s early research on the composition of light and James Clerk Maxwell’s study of electromagnetism, to John Logie Baird’s patenting of the concept of holey fibers, the history of optics and photonics in the UK is littered...
Photonics.com, April 2010
Quantum Dots Are Finding Their Place in the World
There has been a panoply of research into the next big thing in quantum dots – those semiconducting artificial atoms that are ubiquitous in fluorescence imaging, biological and chemical sensing, and display applications. Quantum dots of more...
Photonics Spectra, April 2010
Seeing Better to Shoot Better
With better eyes in the sky and on the ground, soldiers soon will see the battlefield more clearly than ever. Thanks to sensor innovations, screen improvements, faster digital processing and other advances, military imaging systems will capture and...
Photonics Spectra, April 2010
The Laser’s European Family Tree
As we celebrate the 50th anniversary of the date when the first man-made laser saw the light of day, it is important to look back at its birth. And although that beginning took place in the hills of sunny Malibu, Calif., on May 16, 1960, this...
Photonics.com, April 2010
Silicon photonics could save the computer industry
The future of computing may need a light touch – literally. As chips move more and more data around, the metallic wiring on and between them eventually won’t be able to keep up. The solution may be silicon photonics, a technology that employs...
Photonics Spectra, March 2010
MOCVD Systems Meet LED Demand
Explosive growth in the backlighting market for televisions, displays, handheld devices and more is creating a ripple effect throughout the LED industry. LEDs are sought after for backlighting because of their proven performance, low power...
Photonics Spectra, March 2010
Planar Lightwave Circuits Enable Next-Generation 40G/100G Networks
Many new systems rely on advanced modulation formats such as differential phase shift keying and differential quadrature phase shift keying to complement traditional architectures such as dense wavelength division multiplexing. Each method presents...
Photonics Spectra, March 2010
Specialized “shutters” capture superquick phenomena
Remember when “faster than a speeding bullet” was exciting news? At about 2700 mph, the quickest ammo is moving turtle-slow when compared with the rates needed to study physical phenomena at the level of molecules, atoms or even photons themselves....
Photonics Spectra, March 2010
The Year in Stimulus Funding: The impact of the American Recovery and Reinvestment Act on biomedical research
Dr. Francis S. Collins had, as they say, his work cut out for him. In early August 2009, the former head of the Human Genome Project was sworn in as the 16th director of the NIH and thus was charged with overseeing what President Obama would later...
Photonics Spectra, March 2010
Beaming through to NOVEL USES for HOLOGRAPHY
Typically, green, simple three-dimensional images of objects on flat paper are not unknown to today’s kids – or to anyone who has grown up during the past few decades. We encountered them first as wonderments – optical tricks that astounded and...
Photonics Spectra, February 2010
Lighting the Way
The lighting industry is in transition. The formerly ubiquitous incandescent bulb has already been banned in Europe and will be phased out in the US beginning in 2012, all part of ...
Photonics Spectra, February 2010
Making electro-optical sense with Zinc Oxide
ZnO has many properties that make it attractive for optoelectronic applications. It has a bandgap of 3.37 eV – the same as gallium nitride (GaN) – and an excitation binding energy of about 60 meV. It is transparent under visible wavelengths of light...
Photonics Spectra, February 2010
Patent Issues in Synthetic Biology Research
Synthetic biology aims to design and engineer biologically based parts, novel devices and systems as well as to redesign existing, natural biological systems – often with support f...
Photonics.com, February 2010
Prism Awards Winners: Photonics West 2010
The photonics industry last month took an evening off from the bustle of the show floor to celebrate innovation at the Photonics West 2010 trade show and conference. Ten companies ...
Photonics Spectra, February 2010
Putting Imaging in the Picture
It is now more than 180 years since the first image was captured by Joseph Nicéphore Niépce from an upstairs window on his estate in France using pewter plates and a camera obscura...
Photonics.com, February 2010
The art of microspectroscopy
Martin noted that both spectra and high-resolution digital images can be acquired with the company’s microspectrophotometers, also known as microspectrometers (including its QDI 2010 model), which are designed to measure the UV-VIS-NIR spectra of...
Photonics Spectra, February 2010
The struggle to keep research real
Beneath a scientist’s lab coat beats a human heart. So it should be no surprise that researchers sometimes fudge – or outright fake – their data. Often, this manipulation takes the form of a doctored image. Michael Kalichman, director of the...
Photonics Spectra, February 2010
Imaging & Vision Trends: Imaging steps up and out
For Kamalina Srikant, a product marketing engineer with vision software and hardware manufacturer National Instruments of Austin, Texas, improving imaging technology isn’t just a g...
Photonics Spectra, January 2010
Laser Trends: Come up to the lab and see what’s on the slab
Laser achievements in the laboratory this past year ranged from some of the smallest ever made to some of the largest, from the debut of the world’s first hard x-ray free-electron laser to creation of the most powerful light ray yet by a solid-state...
Photonics Spectra, January 2010
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