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Lidar Reveals Hidden Aftershock Hazard in Haiti
Rescue agencies the world over have rallied together in a bid to bring relief to the thousands of people left injured, homeless and without food or sanitation in the wake of the Haiti earthquake, which devastated the region in January this year. One of most troublesome questions looming in the minds of many Haitians and aid workers alike is the possibility of further tremors. The fear of severe aftershocks is so real that, months after the quake, many people are living in makeshift tents...
Photonics Spectra, August 2010
Listen hard, and you’ll hear the NEXT BIG THING coming!
It’s still quite young, but the 21st century has yet to produce a truly life-changing technology. Certainly the 20th century did, with the advent of lasers and transistors and all of the tools and toys they have inspired and enabled since...
Photonics Spectra, August 2010
Near-Infrared Bandpass Filters for Astronomy
Near-infrared filters operate within a wavelength range of 800 to 5000 nm and typically consist of multiple thin-film interference layers of silicon/ silicon compounds deposited on a suitable optical substrate. They can be manufactured in narrow-...
Photonics.com, August 2010
Swiss Research Institutions Rated Among Best in World
Some of its best-known exports may include watches, chocolate and cheese, but Switzerland also is home to a healthy photonics industry, which, according to an October 2009 report by Swiss-based consulting firm Optech Consulting, has generated a...
Photonics.com, August 2010
To Step Up, Semiconductor Lithography Steps Down – Way Down
For semiconductors, smaller is better. That’s why the industry may soon take a big step down. On the horizon is a switch from 193- to 13.5-nm-wavelength lithography. This extreme-ultraviolet (EUV) technology eventually could allow an almost...
Photonics Spectra, August 2010
Adding Fiber Pays Off for Industry
For Electro Scientific Industries Inc. (ESI) of Portland, Ore., getting fiber into its diet has been one key to success. Among other things, the company makes a line of micromachining systems for the semiconductor, flat panel display, photovoltaic...
Photonics Spectra, July 2010
Displays Add a Dimension, Durability
The rumblings about 3-D that began in 2009 are starting to hit the home display market in earnest, thanks in part to the overwhelming popularity of 3-D movies such as Avatar. Besides being visually more stimulating, new displays also are becoming...
Photonics Spectra, July 2010
Laser Technology
If one reviews what happened in the first 50 years of the laser’s history, it becomes quite a challenge to predict what will happen in the next 50. Lasers went from being called “a solution in search of a problem” to becoming an...
Photonics Spectra, July 2010
LIA: Becoming the Laser Institute of America
As just about everyone knows, American physicist Theodore Maiman fired the first laser in May 1960 in Malibu, Calif. What is less well-known is that, in February 1968, also in California, Maiman and other laser pioneers founded the Laser Industry...
Photonics Spectra, July 2010
Mounting Quality Counts
In our feature article in the March 2009 issue (“Heat & Motion Duke It Out,” p. 60), we pointed out that the dominant cause of error in most motion applications is temperature, or, more precisely, temperature changes. Temperature...
Photonics Spectra, July 2010
Spectral reflectivity and interferometry for optical lens analysis
There are more than 500 companies in the US alone that make optical equipment. The number of products with built-in lenses is increasing. Few cell phones or personal computers are sold today without a still or video camera included. We see the...
Photonics Spectra, July 2010
The Ti:Sapphire Laser
Since their invention in the early 1980s, titanium-doped sapphire (Ti:Al2O3 or Ti:sapphire) lasers and amplifiers have enabled countless applications in fundamental research in physics, biology and chemistry. Today, they play an important role...
Photonics Spectra, July 2010
Venture Capital
After years of sweat, toil and heavy thinking, you and your colleagues have done it – created the Next Big Thing. Now all you have to do is start a company and hold the door open for the line of customers who will march through. With any real...
Photonics Spectra, July 2010
Measurement of centering errors, automated adjustment and mounting of lenses
Classical optical measurement techniques combined with modern PC technologyprovide accurate alignment, bonding and cementing of optical components and systems. These processes are fully automated and significantly reduce production time and cost....
Photonics.com, June 2010
Toward roll-to-roll printed power sources and control electronics
To pave the way for commercialization of printed electronics and optics applications, two European Union-funded projects are developing roll-to-roll-based fabrication technologies. In the first project, called FACESS (Flexible Autonomous Cost...
Photonics.com, June 2010
50 Years of the Laser Industry
The relentless innovation that has always characterized the laser industry is now driven and firmly controlled by the needs of applications. In the technology’s infancy, the main goals were the discovery of new laser materials and the...
Photonics Spectra, June 2010
Dual Exposure Speeds Solar Cell Inspection
Worldwide energy demand is rising, and so is the price of that energy as fossil fuel resources are consumed. These trends have led to growing worldwide interest in alternative energy sources such as solar photovoltaic (PV) cells. The key to success...
Photonics Spectra, June 2010
Dual-Mirror Adaptive Optics Systems
Researchers worldwide have leveraged advances in microelectromechanical systems (MEMS) mirror technology by using adaptive optics to correct for wavefront aberrations caused by distortion. Now, the next generation of adaptive optics systems is using...
Photonics Spectra, June 2010
Fiber Optics off the Coast of Africa
Tuesday night, April 6, 2010: The Ile de Batz slowed to a stop in the waters of Dar es Salaam Bay, just off the Msasani Peninsula in the east African nation of Tanzania. The ship had been traveling south from Kenya, laying cable for the Eastern...
Photonics Spectra, June 2010
Laser Safety Standards Through the Years
Shortly after the demonstration of the first ruby laser by Theodore Maiman at Hughes Research Laboratories in Malibu, Calif., in 1960, many other laboratories assembled crude laser devices, and the laser’s unique hazard characteristics did not...
Photonics Spectra, June 2010
Lasers in the Manufacturing of LEDs
In today’s society, there is a continuous need for devices with lower energy consumption and higher efficiency. Light-emitting diodes (LEDs) are expected to see a 61 percent rise in worldwide demand in 2010, according to Barry Young of IMS...
Photonics Spectra, June 2010
Robotic Automation for Solar Cell Manufacturing
The global photovoltaic (PV) manufacturing community is on the cusp of a resurgence in investment, development and innovation, a revolution that largely will be driven by technology. It is vital to find the most effective – and most...
Photonics Spectra, June 2010
The Good Ol’ Days of Laser Entrepreneurship
History is useful only if we can draw useful generalizations from it. And there was a lot to learn from building companies in our industry, especially in the early days. My laser career began in 1963, in my senior year at the University of...
Photonics Spectra, June 2010
Back-Illuminated CMOS Image Sensors Come to the Fore
Solid-state image sensors come in two variants: CCD and CMOS. CCDs generally offer superior image quality. However, CMOS dominates in manufacturing volume because it permits an integrated solution in which both the imaging device and processing...
Photonics Spectra, May 2010
Bending Light at will with Transformation Optics
Invisibility cloaks get all the publicity, but they may just be the beginning if the promise of transformation optics can be realized. The discipline could lead to smaller photonic and electronic devices and more cost-competitive solar cells –...
Photonics Spectra, May 2010
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