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Flat Screens Go Deep – and More
The Duchess of Windsor was half right, at least as far as displays are concerned: They really never can be too thin, as evidenced by the rise of flat screens of all varieties and of displays that can be virtually anywhere. But as for being too rich, she was partially wrong. On the one hand, displays can definitely be too expensive, in either initial cost or ongoing energy consumption. However, they can never do too much, as shown by screens that accept input via multifinger touch.Recent...
Photonics Spectra, September 2009
It’s Two, Two, Two Tools in One
If a surgeon is about to use a probe in the brain, the patient is sure to want that probe to be as small as possible. And three University of California, Los Angeles (UCLA), researchers have developed technology that could lead to tinier probes that...
Photonics Spectra, September 2009
Mid-IR Tunable Lasers Probe Hydrocarbon Molecules
Infrared laser spectroscopy is a powerful technique that allows unique identification of chemical species as well as study of their properties. Measuring absorption as a function of wavelength enables chemists to obtain spectra of compounds that are...
Photonics Spectra, September 2009
Northern Lights: The Photonics Industry in Canada
Canada is a pretty big place: Its surface area is 9,984,670 km2, which means that only Russia and Antarctica are bigger. And photonics is pretty big in Canada, too. The country is strong in a wide variety of photonic areas, according to a January...
Photonics Spectra, September 2009
Pico Boom
Tiny projectors, known as pico or pocket projectors, are on the cusp of becoming the next big thing as they shrink to sizes practical for embedding into ever-smaller cell phones and other mobile devices as well as head-up displays for the military...
Photonics Spectra, September 2009
Reflecting on the Past
One source rarely considered when addressing photonics issues is our ancestors: Great technological discoveries from many millennia ago may lead to modern day solutions. A recent example of this involves optimizing gold-based infrared reflectors...
Photonics Spectra, September 2009
Sensors on the Frontiers of Physics
Computer chips based on light as opposed to electricity have only been theorized, but now researchers are actually developing computer chips that will use light for computer functions. At Yale University in New Haven, Conn., members of Hong...
Photonics Spectra, September 2009
All the Energy You Need … from Tiny Leaves
On a warm summer afternoon, you may find yourself on a leisurely walk through bucolic meadows or toiling under the glare of the sun because the lawn just won’t mow itself, but why not let the grass do some work and earn its keep? Grass, as does...
Photonics Spectra, August 2009
East Asia Photonics Industry: Rising to Opportunity
Views from China Affected by the global economic downturn, the output of some optical manufacturing enterprises in China hit bottom between the fourth quarter of 2008 and the first quarter of 2009, but production has been going up from the...
Photonics Spectra, August 2009
For Laser Diodes, It’s a Material World
Despite the economic downturn, laser diodes keep on pumping – sometimes literally. They often provide the pump for fiber lasers, a market segment that is still relatively strong. However, laser diodes are more than just sidekicks. They also are very...
Photonics Spectra, August 2009
Getting it right with high-performance ISR windows
High-precision windows used for intelligence, surveillance and reconnaissance (ISR) applications can be as large as 0.9 m and must be transmissive at various visible and infrared wavelengths, with a significant focus in the IR. End-user applications...
Photonics Spectra, August 2009
Improving Human Interactions in the Science Lab
Although scientists need to interact with one another in a laboratory environment, they typically receive no training in resolving interpersonal conflicts. According to Carl M. Cohen, a management consultant who specializes in training scientists,...
Photonics Spectra, August 2009
LEDs Shine at Work
Technology is the great catalyzer, catapulting the LED industry forward by enhancing existing applications and enabling new ones. Many technological advances are pushing LEDs away from the old single-color realm where they were used for specific...
Photonics Spectra, August 2009
Multiplexing UV-NIR Spectroscopy Measurements
Optical coating of large areas has become an increasingly important step in materials processing. Achieving the highest possible performance and respective yield from large panes of architectural glass, solar cells and thin-film layers requires...
Photonics Spectra, August 2009
New Shine on Old Gems
Newly developed Cr3+ laser crystals called LIGO and LISO, developed at the Institute for Ultrafast Spectroscopy and Lasers (IUSL) at City College of the City University of New York, extend the family of ruby and alexandrite lasers operating in the...
Photonics Spectra, August 2009
Surface-Emitting Laser Array
High-power, multimode laser diodes are workhorses for many industrial applications. They are used as tools for cutting, welding, sintering and soldering various materials and as pump sources for fiber, disk and solid-state lasers. Many of these...
Photonics Spectra, August 2009
The Devil Is in the Details
Ultrafast lasers – with femtosecond or picosecond pulse widths – support a growing range of applications, from precision micromachining to multiphoton imaging to attosecond physics. Titanium:sapphire is the most widely used gain material in...
Photonics Spectra, August 2009
A Wave Plate for Every Application
The applications for wave plates are many and varied. They can find use in areas such as power attenuation of a laser and optical isolation. In biomedical applications, wave plates are used to determine the polarization of body fluids in microscopes...
Photonics Spectra, July 2009
Australian Agenda: No Great Barriers?
With the launch of the Institute of Photonics and Optical Science (IPOS) in April 2009, scientists at the University of Sydney in New South Wales, Australia, now can draw on the research and teaching expertise of the university’s schools of physics,...
Photonics Spectra, July 2009
Avoiding failure: Advanced metrology finds tiniest defects in semiconductor materials
Chip features are small, and the defects that make them fail, even smaller. What is more, inspecting chips must be done on an assembly line, where throughput is crucial. Add to that layers of reflective and other obscuring films, and you have a...
Photonics Spectra, July 2009
Commercializing the Nobel-Winning Discovery of the Bose-Einstein Condensate
Bose-Einstein technology reduces production time and cost for "ultracold" matter experiments.
Photonics Spectra, July 2009
Getting By with the Help of Your Friends at SPIE and OSA
Optical scientists and engineers have a lot to celebrate as Galileo’s telescope turns 400 this year and the laser turns 50 years old next year. The Optical Society of America (OSA) is serving as a partner in LaserFest, a series of events taking...
Photonics Spectra, July 2009
Into the photon detector’s tool kit
Vacuum tube technology has always preceded its solid-state counterpart. The most familiar example of the former is the transistor, considered the greatest invention of the 20th century. Other examples are cathode-ray and electronic amplifier tubes....
Photonics Spectra, July 2009
Optical Components for Special Situations
In nearly all optical experiments, there must be some degree of adjustment. Depending on the optical elements involved, the experiments may require up to six degrees of freedom. A mirror mount in an interferometer might need only two rotational...
Photonics.com, July 2009
Optical Power Meters: Versatile and Economical
Complex experiments, safety and environmental requirements demand optimum, low-cost optical devices.
Photonics Spectra, July 2009
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