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The Future of Lasers in the Automotive Industry
The global automotive industry has been a pioneer in adopting laser technology into the manufacturing process, perhaps starting as early as 1973 when Ford Motor Co. purchased an underbody laser welding system for an assembly line. Today, new solid-state laser technologies are evolving at an unprecedented pace — in some respects, even more rapidly than Moore’s law predicts advances in semiconductor technology (Figure 1). How are these advances being used in the automotive industry, and how will...
Photonics Spectra, January 2006
Toward Room-Temperature Quantum Information Processing
Quantum spin states in semiconductors have generated considerable interest for their potential use in quantum information processing. By imaging and manipulating single electron spins in diamond crystals at room temperature, a group at the...
Photonics Spectra, January 2006
Unipolar Nanotube Devices Emit in the Near-IR
Scientists at IBM’s Thomas J. Watson Research Center in Yorktown Heights, N.Y., and at Duke University in Durham, N.C., have fabricated field-effect transistors based on partially suspended carbon nanotubes that generate near-infrared radiation. The...
Photonics Spectra, January 2006
Weighing In on the Digital Projection TV Market
The projection television market is expected to grow rapidly as the price of microdisplay projection models drops in comparison with LCD units, according to a report titled “Future Prospects of Projection TV Market.” Chris Chinnock, co-author of...
Photonics Spectra, January 2006
ZnO Nanowire LEDs Have UV Output
In a continuation of their work with LEDs based on ZnO nanostructures embedded in polymer, scientists at Portland State University in Oregon have obtained emission centered at 393 nm from the devices. Such emitters may enable the development of...
Photonics Spectra, January 2006
‘Magic Size’ Crystals Prepared for LED Lighting
According to the US Department of Energy’s Technology Roadmap, half of the money spent on electricity in the country goes to lighting. With the goal of cutting electricity use in half by 2025, more attention is turning to the use of LEDs as sources...
Photonics Spectra, December 2005
Advanced Specialty Fibers Are the Key to Fiber Laser Success
High-power fiber lasers are rapidly becoming an alternative to bigger, bulkier and less energy-efficient lasers. The vital component that enables fiber lasers is specialty fiber, which is optimized for applications that require enhanced optical...
Photonics Spectra, December 2005
Application-Specific Optical Fibers Are Cost-Effective
Application-specific optical fibers are designed to perform a particular function or set of functions within an optical system. The telecom boom affected the market for these fibers in such ways as advancing new applications, improving fiber...
Photonics Spectra, December 2005
CMOS Technology Brings New Opportunities for Consumer Imaging
Although CCD sensors had been the technology of choice for imaging devices for years, CMOS-based sensors have emerged as a viable alternative. CMOS sensors offer a number of intrinsic advantages relative to CCDs, including low power consumption and...
Photonics Spectra, December 2005
Conference Brings Together Solid-State Lighting Suppliers
For six years, Intertech Corp. of Portland, Maine, has sponsored a conference for representatives from all levels of the LED industry supply chain. This year’s event, held in October in San Diego, showcased a rapidly maturing industry facing...
Photonics Spectra, December 2005
Fiber Sensor Provides Real-Time, Continuous Monitoring
By growing a porous material on the end of an optical fiber, investigators at the New Mexico Institute of Mining and Technology in Socorro have developed a versatile detector capable of in situ, real-time monitoring of chemicals in vapors and in...
Photonics Spectra, December 2005
High-Bandwidth, Rugged Fiber Finds Novel Automotive Applications
In the rapidly developing field of fiber optics, the life span of any product is often measured in years, not decades. Yet hard-clad silica fiber has been around for nearly 30 years and is an industry standard among large-core, step-index optical...
Photonics Spectra, December 2005
Highly Birefringent Fiber Has Layered Core
At the University of Bath in the UK, researchers have produced an optical fiber that they believe has the highest birefringence ever reported. Birefringent fibers are important in applications where the polarization of light that is traveling...
Photonics Spectra, December 2005
Improving Nanopositioning Resolution
Nanopositioning is a basic requirement in virtually all areas of nanotechnology research. And, because it implies very small motions controlled with a high degree of accuracy, it seems intuitive to seek a specification of a nanopositioner’s...
Photonics Spectra, December 2005
Jobs in Photonics
When Photonics Spectra conducted its annual European salary survey, it found a shift in pay that was slightly surprising. This year’s survey shows a decrease in pay. In 2004, the median salary for Europe was €60,000. This year, our salary survey...
Photonics Spectra, December 2005
Microscope Setup Rapidly Images Plasmon Sensor Array
When it comes to genomic and proteomic arrays, researchers want fast measurements and techniques free of fluorescent labels. These characteristics, noted University of California, Berkeley, bioengineering professor Luke P. Lee, can reduce the time...
Photonics Spectra, December 2005
Microscopy of Mother-of-Pearl Suggests Novel Formation Mechanisms
The iridescent substance called nacre, or mother-of-pearl, is of particular interest to materials scientists because this layered arrangement of CaCO3 crystal platelets is some 3000 times more resistant to fracture than pure crystal. An...
Photonics Spectra, December 2005
Nanosheets Might Make Microlasers
Researchers at the University of California, Davis, have created planar clusters of CdSe nanocrystals that emit polarized light in the plane of the cluster. The discovery could lead to nanostructures that emit light, such as lasers and LEDs; absorb...
Photonics Spectra, December 2005
One-Dimensional Holey Fiber Is Highly Nonlinear
Typically, holey fibers are composed of glass, with a microstructure of tiny airholes surrounding the core. Several years ago, scientists at the University of Southampton in the UK demonstrated that holey fibers also can be constructed from two...
Photonics Spectra, December 2005
Optical Profiler Technology Enables High-Magnification Measurement Through Transmissive Materials
For decades, high-performance optical profilers have been evolving to adapt white-light interferometry to research and production applications in materials science, semiconductors, optics and the biological sciences. However, a limitation that...
Photonics Spectra, December 2005
Optical Tweezers Study Alters Einstein’s Theory of Motion
Brownian motion, first described theoretically by Albert Einstein 100 years ago, is the concept that the irregular motion of particles in a fluid is caused by random thermal agitation of the surrounding molecules. Since then, scientists have...
Photonics Spectra, December 2005
Photoluminescence/Raman System Images Nanotubes
Using a setup that enables simultaneous high-resolution photoluminescence and Raman imaging, scientists at Universität Tübingen in Germany and at the University of Rochester in New York are probing single-walled carbon nanotubes. Coupled with the...
Photonics Spectra, December 2005
Reducing Uncertainty in Precision High-Brightness LED Measurements
Dramatic improvements in the performance of LEDs and other solid-state lighting sources over the past five years have produced unexpected growth for this sector of the photonics industry. Advancements in output performance and operating efficiencies...
Photonics Spectra, December 2005
The Best Defense Is a Bright Diode Laser
Throughout history, military applications have employed state-of-the-art technologies as conflicting parties hastened to stay one step ahead of each another. Photonics technology is no exception. As early as 212 B.C., optics were used as a weapon...
Photonics Spectra, December 2005
Tip Design Offers Aperture and Apertureless Advantages
A design for a metallic tip probe for scanning near-field optical microscopy promises the benefits of both aperture and apertureless techniques. The scientists at Gifu University in Japan who conceived the probe geometry suggest that it should yield...
Photonics Spectra, December 2005
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