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Extreme Photonics: Mega Mirrors
When Mary Edwards wanted to look for interior flaws in the glasswork her colleagues were making, she took off her jewelry, removed her shoes and belt buckle, and emptied her pockets of sharp objects. The senior product engineer at Corning Inc. in Canton, N.Y., then stepped very carefully onto the surface of a mirror 8.3 m in diameter. The glasswork was destined to become the largest single (monolithic) mirror ever made and the heart of Japan’s new Subaru telescope. ("Subaru" is...
Photonics Spectra, February 2000
Extreme Photonics: Repetition Rates
Ultrashort pulse generation was totally dominated by lasers that only highly skilled researchers could operate in well-equipped laboratories. The equipment was not suitable for industrial applications: Short-lived components such as carcinogenic...
Photonics Spectra, February 2000
Extreme Photonics: Ultrafast Lasers
The 1999 Nobel Prize in chemistry rewarded not only Ahmed Zewail’s pioneering work on ultrafast spectroscopy and femtochemistry, but also the entire field of ultrafast optics and femtosecond laser applications. In the last decade, pulse...
Photonics Spectra, February 2000
Extreme Photonics: Wavelength Measurement
Spectroscopists have long needed to measure and catalog the "exact" absorption wavelengths of atoms and molecules. But accurate wavelength measurement is not just for spectroscopy anymore. Two applications that require precise wavelength...
Photonics Spectra, February 2000
Photonics Design & Solutions: Medical Technology Borrows from Industrial Laser Systems
Just as cutting, welding and drilling are industrial applications, so are they medical applications. Lasers that enable machine tools also enable, in skilled hands, delicate surgical instruments. The laser’s industrial roots took hold long...
Photonics Spectra, February 2000
Technology Close-Up: Fast Cameras Meet the Need for Speed
Every weekend, all over the world, millions of people relax at home by watching televised sporting events. Often, slow-motion instant replay allows viewers to observe an event that was too fast for the eye to see, providing detail that may cause an...
Photonics Spectra, February 2000
Fiber Optics: Fiber Optic Amplifiers
Optical amplifiers will soon become smarter. To meet dense wavelength division multiplexing needs, erbium-doped fiber amplifiers boost optical signals across multiple wavelengths. As communications systems add more wavelengths, however, erbium-doped...
Photonics Spectra, January 2000
Fiber Optics: Integrated Optics
Integrated optics products that are finding widespread commercial application include lithium niobate modulators and passive waveguide devices using silica on silicon, ion-exchanged glass, or polymer on silicon material systems. Overall trends will...
Photonics Spectra, January 2000
Fiber Optics: Optical Fiber
As the technology of transmitting and receiving light continues to evolve and improve, so will the technology of designing new and improved optical fibers. A variety of optical fiber designs -- ranging from improved standard single-mode fibers to...
Photonics Spectra, January 2000
Fiber Optics: Passive Components
Since the mid-1980s, optical fiber has been the backbone of telecommunications networks. Companies that make system hardware for these networks have traditionally been large, established and well-known. At the heart of the technology, however, are...
Photonics Spectra, January 2000
Fiber Optics: Transmitting Photons
The number of companies claiming to be specialists in market forecasting for fiber optic communications should provide a clue to the immense size of this market. Stock analysts’ abrupt coverage of fiber component manufacturers offers another...
Photonics Spectra, January 2000
Imaging/Detectors: Camera-to-PC Interfaces
Machine vision providers are realizing the benefits of digital cameras with high resolution and frame rates, and they are migrating toward these higher-performance alternatives. As this happens, the need for more bandwidth to transfer the...
Photonics Spectra, January 2000
Imaging/Detectors: Catching Photons
When we try to capture and analyze light, we enter the realm of detectors and imaging technologies. Whether we hope to view images or count photons, we use devices that work by absorbing particles of light and turning them into information. If we...
Photonics Spectra, January 2000
Imaging/Detectors: CMOS Detectors
Complementary metal oxide semiconductor (CMOS) active-pixel image sensors have found application in areas such as videoconferencing, security surveillance and machine vision. Active-pixel CMOS devices use less power and cost less than traditional...
Photonics Spectra, January 2000
Imaging/Detectors: Infrared Imaging
Thirty years ago, the cost and complexity of thermal imaging made the technology feasible only for high-end defense and science applications. As we enter 2000 and look toward 2005 and beyond, infrared imaging will touch all corners of our lives,...
Photonics Spectra, January 2000
Imaging/Detectors: Machine Vision
Three forces direct the evolution of machine vision: Enabling technology determines what is possible, algorithms determine what is practical, and applications determine what is desirable. Machine vision depends on two kinds of enabling technology,...
Photonics Spectra, January 2000
Imaging/Detectors: Photomultipliers
Application demands for increased performance are stimulating photomultiplier manufacturers to continuously improve detectors and develop innovative devices. The demands are coming both from traditional applications such as gamma cameras and...
Photonics Spectra, January 2000
Imaging/Detectors: Scientific Imaging
Five years ago, high-performance charge-coupled device cameras were slow, monolithic and difficult to use. Today, the cameras are significantly faster, often much smaller and almost completely software-controlled. In the coming several years, we...
Photonics Spectra, January 2000
Instrumentation & Accessories: Positioning
Decades ago, few people believed that industry would ever need to move macroscopic bodies by nanometers. Today it is a necessity. One example is in data storage. With the constant need for more storage capacity in smaller packages, drive components...
Photonics Spectra, January 2000
Instrumentation & Accessories: Test Equipment
During this decade, the telecommunications industry has been making a transition from a slowly growing network optimized for voice traffic to one whose bandwidth needs are exploding to keep pace with data exchange between computers. Fiber optic...
Photonics Spectra, January 2000
Instrumentation & Accessories: Using Photons
Instrumentation and accessories are seeing the same kinds of market trends as other photonics technologies. "Better, faster, cheaper" is a contagious battle cry. Laboratory equipment and OEM components are shrinking in both size and cost while...
Photonics Spectra, January 2000
Lasers and Light Sources: High-Power Diode Lasers
During the last several years, high-power diode lasers based on bars have developed rapidly both in optical output and in lifetime. In only five years, the typical output from a single commercially available diode laser jumped from 20 to 50 W...
Photonics Spectra, January 2000
Lasers and Light Sources: Industrial Lasers
The market for industrial lasers has largely been dominated by high-power CO2 and lamp-pumped Nd:YAG lasers. These devices have provided cost-effective access to high-power infrared and visible laser emission for applications that include cutting,...
Photonics Spectra, January 2000
Lasers and Light Sources: Making Photons
By valuing reliability, efficiency and economy above gadgetry and engineering elegance, the communications, medical and manufacturing markets are changing the laser business. These customers are generously rewarding laser manufacturers who can share...
Photonics Spectra, January 2000
Lasers and Light Sources: UV Lasers
One application trend vital to the future of UV laser makers has been the miniaturization of electronic devices brought on by an explosive demand for communications and information technology. As demand increases for portable gadgets such as...
Photonics Spectra, January 2000
(2,985 results found)

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