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Photonics Spectra - January 1998
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Issue Library
Features
Aspheric Lenses:
In the past, high precision aspheric optics have been produced on a "one-off" basis using highly skilled and labor intensive processes. Today, manufacturers of advanced semiconductor processing equipment are looking to incorporate aspheric surfaces in these systems to replace one or more projection optic components, resulting in a smaller, more compact optical systems. In addition, incorporating...
High-speed imagers come to the desktop
HHigh-speed video for motion analysis has gained wide acceptance over the past 15 years. The technolgy grew despite slow and arduous processes on computers built for other purposes. High-speed...
Laser Diodes:
The small size, high reliability, excellent beam quality, low price and negligible operating costs of diode lasers have made them today's most popular laser. High power devices promise to replace...
Diode Lasers:
For years, scientists have searched for the secret to cheap, compact blue lasers for high-density optical storage. Blue diode lasers' short wavelength offers a small focused spot size, which would...
Optical Waveguides:
Integrated optic modulators provide chirp-free modulation with on-off ratios that meet the requirements of WDM systems. The marketplace is demanding higher levels of integration in the modulator to...
Machine Vision:
Improvements processors, software and cameras will lead to machine vision systems that are easier and cheaper to employ. The net result should be continued market growth, and that bodes well for the...
Fiber Gratings:
An exciting recent development in fiber-optic technology is the ability to holographically imprint diffraction gratings into the core of an optical fiber using intense UV light. Today the most...
High Harmonics Could Revolutionize Optical Science
The generation of very-short coherent x-ray pulses can be achieved using high-field effects, where a super-intense, ultrashort optical pulse nonlinearly interacts with a medium. This scheme is...
High Power Laser Optics:
As power levels rise above 5 kW, optics become critical to the performance and reliability of laser systems. These applications demand consistent laser-quality ZnSe that is defect free and has bulk...
Imaging Boards:
To say that the world of imaging is evolving is an understatement in the least. Manufacturers will continue to migrate away from dedicated systems for high-end applications. This movement is only...
IR diode lasers boost telecom, material industries
Improvements to single- and multimode diode lasers have produced devices that are well suited for a diverse set of applications. During the past several years, diode lasers have achieved higher...
Lens Design:
So there you are: Your company is developing a product that will incorporate an optical system which must be a custom design. And you are responsible for the optics. Assuming that you have a...
Nonlinear optics:
Until the late 1980s, multiphoton processes in organic and polymeric materials were only of academic interest due to their relatively low-multiphoton-absorption cross sections. However, a new...
Optical Design:
Optical Design software encompasses a large variety of applications, spanning lens design and illumination optics, laser cavity design, integrated optics design, physical image modeling, and...
Passive alignment:
The cost issues of conventional optical module technologies arise from the long assembly time, the large number of components, and the need for costly hermetically-sealed packages. To overcome the...
All Solid-State Lasers:
All-solid-state sources are comparable to high-power diode lasers with a few notable exceptions: they provide improved mode quality, energy storage for Q-switched applications, mode-locking for...
Optical Coherence Tomography:
OCT is a promising and powerful medical imaging technique because it can permit the real-time, in-situ visualization of microstructures in tissue without the need for specimen excisions. The...
Vision Software:
Driven by converging technologies, today's PC-based vision software for industrial and laboratory applications is a cost-effective, general-purpose tool for scientists and engineers. However, with...
X-ray Detectors:
Amorphous Silicon x-ray detectors are on the verge of revolutionizing medical imaging technology. Although laboratory prototypes have been available for a few years, the technology has matured to the...
Tech Pulse
Molecular 'Antenna' Captures Light
Researchers from the University of Michigan at Ann Arbor and the University of Illinois at Urbana-Champaign have developed a class of dendrimer molecules that "harvest" light. The molecules have a...
Photonic Crystal Portends Fiber Optics Breakthrough
CAMBRIDGE, Mass. -- Researchers at the Massachusetts Institute of Technology have designed and tested a silicon device that some view as an important step toward creating fiber optic communication...
For detectives who are hard-pressed to find clues at a crime scene…
Sandia National Laboratories offers a solution. Researchers at the Albuquerque, N.M., laboratory are developing an evidence-detection system that illuminates the natural fluorescence of fingerprints,...
Diffuser Clarifies Cloud Studies
LAMONT, Okla. -- Several design improvements including a reflective instead of transmissive light diffuser panel and fiber optic probe should help the US Department of Energy (DoE) better understand...
Diode Laser Finds Home Aboard Columbia
The video guidance sensor aboard the space shuttle Columbia featured eight fiber-coupled diode lasers as its essential components. The fiber-coupled lasers, manufactured by Opto Power Corp. of...
Laser Firms Eye Medical Markets
SAN DIEGO -- New technologies are improving industrial perceptions about laser materials processing, and new markets, including medical products, are opening doors to companies that can solve...
Future Looks Bright for Sol-Gel Techniques
JENA, Germany -- Seven European partners have completed a three-year project to develop sol-gel processing techniques for waveguides, lens arrays, waveguide amplifiers, electro-optical modulators,...
Software Gauges Efficiency of AR Coatings
A British researcher has developed software that analyzes new antireflection coatings for optical systems. Geoff Adams, of UK-based Optical Software Co., has developed WinLens for Spindler &...
Optical Gel Senses Chemicals
PITTSBURGH -- By forming a functionalized gel around an array of colloidal particles, researchers have created a sensor that indicates the presence of specific chemicals by a shift in the gel's...
Scientists Solve H 2 O Mystery
For the last 50 years, scientists have sought to understand the biochemical and physical processes that take place in liquid H2O. They employed such methods as dielectric relaxation, spectroscopy and...
Honey, I Shrunk the Lab
PRINCETON, N.J. -- In a development reminiscent of Hollywood, chemists may soon find their extensive laboratory set-ups reduced to the size of a small laptop computer. Luckily, the chemists...
Navy's 'Dark Horse' Could Lead to Unmanned Combat Flight
Scientists at the Naval Research Laboratory have demonstrated real-time, hyperspectral detection of both airborne and ground targets. The detection system, part of the laboratory's "Dark Horse"...
Low-Power, Time-Domain Holography Holds Promise
MENLO PARK, Calif. -- A recent demonstration of time-domain holography could dispel beliefs that holographic memories need high-power lasers to function. Holographic memories, characterized by...
Photos Indicate Water on Mars
ITHACA,N.Y. -- Scientists report that the more than 9500 images taken during the Mars Pathfinder mission provide strong geological evidence that water was once present on the Red Planet. A group of...
Sand-Size Transmission Aids Space Exploration
A group of scientists at Sandia National Laboratories have developed a transmission about the size of a grain of sand that could prove useful in optical telescopes and optical switching in telephone...
Near-Field Microscopes Speed Up
NEW HAVEN, Conn. -- Chemically etching a near-field optical fiber probe tip has enabled researchers at Yale University to improve the scanning rate of a near-field optical microscope. The etching...
Stabilized Laser Source Is Key to Interferogram
A researcher from CSO Mesure in Grenoble, France, has produced a high-frequency laser source that could prove useful in next-generation interferometric spectrometers. Developed as part of a project...
Researchers Take Crucial Step Toward Miniature Optical Devices
Two Columbia University researchers have advanced the development of miniaturized optical devices such as microlasers and implantable medical sensors. Richard Osgood and Miguel Levy bonded a...
Vienna Group Generates Coherent X-Ray Source
VIENNA, Austria -- A group of researchers at the Vienna University of Technology has generated a coherent x-ray source that could pave the way for high-contrast biological imaging. The collimated...
Laser Could Extend Optical Lithography into VUV
Lambda Physik of Göttingen, Germany, has developed a high-power, vacuum UV light source that may enable optical lithography to reach beyond the limits of the 193-nm ArF lasers now in use.
light speed
Equipment Makers Challenge Market Gloom
MOUNTAIN VIEW, Calif. -- Pessimistic news about the Asian semiconductor manufacturing market did not sway members of Semiconductor Equipment and Materials International from forecasting growth in their business in 1998. The Capital Equipment Consensus Forecast, released in November, predicts that members' 1997 commercial shipments will total $28.3 billion, an increase of 7.7 percent over their...
Study: Hobbyists Make Poor Entrepreneurs
SALISBURY, Md. -- When does a toy become a commodity? When do a few people in a lab experimenting with a new process or technology develop into an enterprise with several layers of production and...
Lasers Are the Basis of New Manufacturing Process
Researchers at Sandia National Laboratories (website) in New Mexico, in conjunction with a consortium of 10 companies that includes Eastman Kodak, Laser Fare Inc. and Allied Signal, has launched a...
LEOMA to Host Executive Seminar
Capitalizing on renewed interest in the nation's science and technology policy, the Laser and Electro-Optics Manufacturers' Association is planning to host its executive seminar March 15-17. The...
Merger Creates Huge Medical Laser Firm
YOKNEAM and TEL AVIV, Israel -- ESC Medical Systems Ltd. and Laser Industries Ltd. have announced a merger plan that would create an international heavyweight in the medical laser industry, with $185...
National Science Board to Set Research Priorities
Concerned with future funding, the National Science Board is calling for further study on establishing scientific research priorities. In a paper titled "Government Funding of Scientific Research,"...
SDL Acquires Laser Marking Start-Up
SAN JOSE, Calif. -- In a rare case of a component manufacturer purchasing one of its own customers, SDL Inc. has acquired all the outstanding shares of the privately held Mr. Laser Inc. for $1.2...
Spectra-Physics Lasers Goes Public
MOUNTAIN VIEW, Calif. -- Longtime laser innovator Spectra-Physics Lasers Inc. (SPL) last month sold 2.4 million shares of common stock. Revenues estimated at $22.3 million from the sale of stock will...
R&D Spending Is on the Rise
US companies invested heavily in research and development from 1995 to 1997, according to a National Science Foundation (website) survey. The rate of R&D expenditures even outpaced the US economy...
Physicist Sues Duke over Control of Lab
A scientist who invented a free electron laser more than a decade ago has filed a lawsuit against Duke University in Durham, N.C., over control of the laser. John Madey received a four-year, $19.7...
SDL Wins Business Award
The US Small Business Administration has presented the Tibbets Award to SDL Inc., a manufacturer of semiconductor lasers and other photonic systems. The award is given to small firms whose...
Accent on Applications
IR Cameras Save the Ship
When your million-dollar racing yacht falls from a crane, how do you evaluate unseen damage? Thomas Jones, vice president and senior engineer at Industrial Quality, has developed a creative solution...
Lasers and Holographic Imaging Team up for Combustion Flow Study
Researchers at the Wright Patterson Air Force Base in Dayton, Ohio, are using holography and laser technology in an effort to develop a practical 3-D diagnostic technique for evaluating aircraft...
Laser Vibrometer Heightens Speaker Design
The VPI 4000 scanning laser vibrometer produces a clear picture of what is happening on the surface of the speaker. Courtesy of Mackie Design. The company's first loudspeaker product, the HR824,...
Lasers Track Air Pollution
Chemical emissions in the Earth's atmosphere profoundly affect the weather. When dust, soot, ice or sea salt act as catalysts, atmospheric chemicals can reduce or contribute to smog, global warming...
Presstime Bulletin
Clues About Atmospheric Sprites Unfold
Scientists have long thought that red sprites, very intense and brief forms of lightning that occur high in the atmosphere, lack definite form. At 30 to 50 miles above the storm, the researchers said, spark channels form, which give off a blue glow and eventually streak upward leaving behind glowing red streamers of ionized gas. Now a group of researchers in Stanford University's Very
Coherent Enters Telecom Market
Coherent Inc. of Santa Clara, Calif., has formed a joint venture with Fiber Optics Network Solutions Corp. of Northboro, Mass., to develop a high-power broadband transmission product line for...
Laser Expert Collared in Espionage Case
A US physicist who formerly worked for Los Alamos National Laboratory (website) in New Mexico has admitted under a plea bargain agreement to giving defense information that he knew was classified to...
Industrial Laser Shipments Escalate
Third-quarter 1997 shipments of industrial laser equipment and systems within North America, including exports from the US, rose 16.4 percent from the third quarter of 1996, according to a recently...
Robotic Camera Keeps Eye on Shuttle
An astronaut conducted the first tests of NASA's Aercam Sprint, a robotic camera about the size of a beach ball. NASA's Aercam Sprint, a robotic camera about the size of a beach ball. In December,...
Products
FIBER CUTTER
Industrial Fiber Optics' new cutter for plastic fiber produces precise cuts and fiber ends that the company says exceed the quality of those obtained with other cutting tools or with polishing. The...
Industrial Fiber Optics Inc.
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EVALUATION BOARD
Vitesse Semiconductor Corp. has unveiled its LAB26 logic analyzer board, enabling the evaluation of fiber channel and gigabit Ethernet transceiver integrated circuits. The device evaluates signal...
Vitesse Semiconductor Corp.
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FO CABLE ASSEMBLIES
Radiant Communications Corp. has introduced a line of fiber optic ribbon cable assemblies that can be supplied with colored tubing to match the fiber color or with numbered subunits for easy...
Radiant Communications Corp.
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FO ROTARY JOINT
Focal Technologies Inc. is offering a two-pass, single-mode, fiber optic rotary joint. The Model 242 is suited for cables with multiple single-mode fibers. As an option, it can be combined with the...
Moog Focal
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WAVELENGTH LOCKER
DiCon Fiberoptics Inc. has a new line of Wavelength Lockers for feedback control of DWDM lasers on the 100-GHz ITU grid. A single locker can be used for all 40 ITU channels. A passive, two-port...
DiCon Fiberoptics Inc.
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OPTICAL POWER METER
EXFO E.O. Engineering Inc. has developed an optical power meter, the PM-1100, with a dynamic range of 110 dB. The device allows the user to store up to 512 readings and up to 1024 data points....
EXFO Inc.
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FIBER OPTIC MODULES
ILX Lightwave has extended the capability of its line of precision fiber optic source modules. The 79800B series is a family of DFB and Fabry-Perot fiber optic source modules offering high stability...
Newport - ILX Lightwave, Photonics
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MULTICHANNEL DWDMs
Amphenol Fiber Optic Products has developed a line of multichannel dense wavelength division multiplexers based on the company's fused biconic taper and fiber Bragg grating filter technologies. The...
Amphenol Fiber Optic Products
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SHIPPING PROGRAM
Physical Optics Corp. is offering next-day shipping of its digital fiber optic communications products through its COMMSTOCK program. Products available under this program include the 6900F-S-M,...
Physical Optics Corp. (POC)
FIBER STRETCHER
Piezomechanik GmbH has introduced the LFS linear fiber stretcher, which piezoelectrically modulates the optical path length in an optical fiber without bending losses and other restrictions. The...
piezosystem jena GmbH
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REMOTE CAMERA
Colorado Video is offering the Cellular Lookout, a weatherproof, battery-powered camera that is suitable for surveillance and visual monitoring of remote sites such as oil rigs, construction zones...
Colorado Video Inc.
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CCD VIDEO CAMERAS
ELMO has introduced its TSN-410D series of advanced digital signal processing CCD color video cameras, providing on-screen display and more than 410,000 pixels. The CCD cameras feature automatic or...
ELMO USA Corp.
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FIELD SPLITTER
Useful in machine vision applications, the Adjustable Field Splitter from Light Works allows a single camera to view multiple fields at once. The optical device, which is designed to cut costs and...
II-VI Aerospace & Defense
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IMAGE PROCESSING
Sensoray Co. Inc. has introduced a line of machine vision frame grabbers. The Model 611 is suitable for the PCI bus and the Model 711 is suitable for the compact PCI bus. The frame grabbers convert...
Sensoray Co. Inc.
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PROGRESSIVE SCAN CAMERAS
Sony Electronics Inc. is offering the ultracompact XC-55 and XC-55BB monochrome series of miniature camera modules for a wide range of industrial monitoring and machine vision applications. The...
Sony Electronics Inc., Visual Imaging Products Group
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IMAGING SOFTWARE
Euresys s.a. has added a 32-bit color image processing library to its Easy series. Supporting the true-color RGB model, the library handles several variants of colorimetric systems such as PAL, SECAM...
Euresys SA
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LASER DIODES
Toshiba America Electronic Components Inc. has three visible laser diodes. They operate at 650 nm, each with distinct capabilities that include bar-code scanning and alignment-type applications, as...
CANON MEDICAL COMPONENTS U.S.A., Video Sensing Devices
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DIODE MEASUREMENT
Gradient Lens Corp.'s LARS/200 diode laser measurement system will be made and marketed by LaserMax Inc. as Nano-Trak. This self-contained system, which eliminates the need for separate lasers,...
Gradient Lens Corp.
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LASER POINTER
Roithner Lasertechnik has developed what it calls the world's smallest laser pointer. With a diameter of 9.5 mm and a length of 57 mm, the device produces a bright 645-nm red point at distances up to...
Roithner Lasertechnik GmbH
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DOPPLER VELOCITY INTERFEROMETER
The DVI 99 noncontact velocity recording system from Martin, Froeschner & Associates detects spontaneous changes in the frequency of light reflected from a moving surface. This turnkey system, which...
Martin, Froeschner & Associates
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MODULAR CHILLERS
The TKD-200/250 series chillers from Tek-Temp Instruments Inc. provide single-channel capacity and modular construction, and a selection of control, monitoring, alarm and interlock options. Water or...
Tek-Temp Instruments Inc.
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NIR-ABSORBING DYE
Epolin Inc. says its Epolight VI-30 NIR-absorbing dye has excellent light stability and the thermal stability required for processing in polycarbonate, and it is soluble in a wide range of solutions....
Epolin
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LONG-LIFE SAPPHIRE-ENVELOPE LAMPS
Xenon Corp.'s new sapphire linear lamps feature deeper-UV output, higher power densities and longer lamp life than traditional quartz envelope lamps. The company uses a manufacturing process that...
XENON Corporation
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MONOCHROMATIC LIGHT
The MLM-2 from Optometrics USA Inc. is a monochromatic light source module that consists of a light source, Mini-Chrom monochromator and built-in electronics for wavelength scanning. It can be used...
Optometrics Corp.
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ASPHERIC MOLDED LENSES
Alps Electric Co. Ltd. has developed an optical communications lens with high coupling efficiency and high reliability. This aspheric molded glass lens is supplied with a stainless steel holder that...
ALPS Electric Co. Ltd.
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COATING SOFTWARE
FilmSpectrum from Scientific Computing International is thin-film characterization and metrology software that calculates the index of refraction, extinction coefficient and film thickness from...
Scientific Computing International
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OPTICAL CRYSTALS
A line of high-purity optical crystals is available from Aremco Products. Useful for a wide range of research applications, the crystals are based on lanthanum aluminate, magnesium oxide, rutile,...
Aremco Products Inc.
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LENS CLEANING
Opto-Alignment Technology Inc. says its white 400 Series Opto-Wipes leave significantly less nonvolatile residue than did its previous wipes. Sodium and chloride ions are a fraction of what could be...
Opto-Alignment Technology Inc.
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MIRROR MOUNTS
New Focus Inc. has designed its top-actuated mirror mounts to allow easy access into compact spaces without blocking the beam. The cam design converts the vertical drive motion to tip and tilt the...
Newport - New Focus
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OPTICAL DESIGN SOFTWARE
Optical Research Associates (ORA) has updated its CODE V optical design software. Version 8.2 offers new features that the company says enable the lens designer to analyze and optimize a wider...
Synopsys Inc., Optical Solutions Group
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ZOOM LENSES
Computer Optics Inc. is offering a line of precision zoom lenses for focusing from 90 to 200 mm. The COI MVZ 101 produces crisp images for 1/2- and 2/3-in.-format CCD cameras with up to 500k-pixel...
Computer Optics Inc., IRZoom
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POSITIONING STAGES
Schneeberger Inc. has added two high-precision X-Y stages to its line. The AA12 and AA15 stages are based on low mass and high stiffness by incorporating the company's MRC 15 series Monorail...
Schneeberger Inc.
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BORESCOPE EXTENSIONS
Gradient Lens Corp. has developed several extensions for its line of Hawkeye precision borescopes. Adjustable focusing allows the user to focus sharply on a subject of interest and to adjust for...
Gradient Lens Corp.
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SPECTRORADIOMETER
The SeaSpec spectroradiometer from Analytical Spectral Devices Inc. can be submerged to provide the radiance and irradiance measurements required by the bio-optics community. This dual-CCD instrument...
ASD Inc.
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