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Photonics Spectra - November 2000
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Issue Library
Features
Damage Control:
Thanks to modern manufacturing practices, thin-film coatings for high-power laser systems can withstand high fluences before experiencing catastrophic damage. Yet laser fluence all too often damages optics in real-world applications. End users often assume that the coatings are to blame, but this is rarely the case. Two common sources of coating damage for high-energy pulsed lasers in the visible...
Photonics Defies the Depths
We’re aboard the Ningaloo Blue, two miles out in the Indian Ocean, about to swim with the world’s largest known sharks. Nine years earlier, an amateur biologist discovered that the...
Adaptable, Efficient Lasers Expand Their Role in Microfabrication
Cell phones, computers, stents, microsatellites, smart cards, ID tags -- there’s no escape from products incorporating miniature components. Consumers are expected to spend billions of dollars...
Submarine Fiber Networks Have the World on a String
Submerged in the world’s oceans are well over a million kilometers of submarine cable -- enough to circle the globe 30 times -- forming a network of arteries that carry huge volumes of traffic...
Production Testing Improves Laser Economics
The increasing demand to send more information through existing optical fibers is accelerating the growth of dense wavelength division multiplexed (DWDM) telecommunications systems. In these systems,...
Tech Pulse
Shack-Hartmann Challenges Interferometry
A team of researchers at Lawrence Livermore National Laboratory in Livermore, Calif., has determined that Shack-Hartmann wavefront sensors offer sufficient sensitivity to replace phase-shifting...
Coatings Control Aberration in Optical Pickups
The demand for more-compact optical disk drives in laptops has created a problem: The shorter image-to-object distances result in astigmatism. The solution has been to introduce aberrations into the...
Smart Cameras Have Their Eye on Crime
COLLEGE STATION, Texas -- Don’t look now, but Big Brother is just around the corner, say researchers at Texas A&M University. No, not the reality TV program, but automated surveillance...
Diamonds Produce Single Photons
Two research teams from Germany and France have reported that nitrogen impurities in Ib synthetic diamonds can be used as room-temperature single-photon emitters. Such stable and robust sources of...
Bigger Isn’t Always Better for Molecular Light Funnels
ROCHESTER, N.Y. -- Researchers at the University of Rochester have determined the ideal size for a light-harvesting molecule that one day may improve the light gathering of everything from...
Pulse-Shaping Yields Efficient X-ray Generation
An international group of scientists has found that controlling the shape of laser pulses improves soft x-ray generation by nearly an order of magnitude. The technique incorporates a feedback loop to...
Lasers Tweaked to Catch Gravity Waves
ADELAIDE, Australia -- Researchers at Adelaide University had a bright idea: Develop a laser to boost the sensitivity of gravitational wave detectors. From Galileo’s homemade telescope in the...
Zeiss Building Giant Laser Gyro
Carl Zeiss of Oberkochen, Germany, has taken an important step in the completion of a mammoth ring laser gyroscope with the delivery and installation of the 10-ton, 4.25-m Zerodur disc that is the...
Laser Altimetry Detects Thinning Ice
WALLOPS ISLAND, Va. -- It’s probably a good idea to hold off buying that beachfront cottage, at least until the effects of global warming are better understood. Using an aircraftmounted laser...
Bow Tie Is Key to New Blue Laser
BOZEMAN, Mont. -- For years, researchers have sought to generate long-wavelength blue laser light inexpensively. Now a team from Montana State University has done just that by frequency doubling a...
X-Rays Mark the Spot for Mines
PALE, Bosnia -- Finding land mines is slow, tedious and dangerous. Because today’s mines are mostly plastic, metal detectors cannot find them. The most reliable detection method requires...
Optics Firm, NASA Produce Lightweight Mirror for Space Telescope
San Diego-based Composite Optics Inc. has announced that it has completed construction and testing of a 2-m prototype mirror for the European Space Agency’s Far-Infrared and Submillimeter Space...
Color-Changing Array Identifies Odors
CHAMPAIGN, Ill. -- For years scientists have been attempting to emulate a pretty good chemical detector: the human nose. Now an array of chemical sensors may provide a straightforward process for...
OPO Developed for Mid-IR Spectroscopy
Physicists at the University of St. Andrews in St. Andrews, UK, have reported the development of an optical parametric oscillator (OPO) with mid-IR output. The device shows pulse repetition rates of...
Organic Lasers Go Electric
MURRAY HILL, N.J. -- Physicists at Lucent Technologies Inc.’s Bell Labs have developed the first electrically driven organic semiconductor laser. Constructed of crystalline tetracene, a...
Waveguides Show No Diffraction
Researchers from The Weizmann Institute of Science in Rehovot, Israel, and the University of Glasgow in the UK reported in the Aug. 28 issue of Physical Review Letters that they have developed a...
Silver Fiber Transmits IR Images
TEL AVIV, Israel -- Scientists at Tel Aviv University are developing an infrared endoscopy technique that employs bundles of silver-halide fibers. Infrared endoscopy could detect cancerous tumors or...
Simple Device Measures Film Thickness
CHAMPAIGN, Ill. -- Film thickness between a liquid-vapor interface can reveal much about the performance of a fluid-mechanical system. The thickness of liquid refrigerant film on the interior wall of...
Spy Photos Spot Invasion
LAS CRUCES, N.M. -- Spy satellite photographs have documented a desert invasion. But don’t stockpile food and water in some survivalist’s bomb shelter just yet. This invasion consists of...
Crystal Yields Narrowband T-rays
A team from the University of Michigan and IMRA America, both of Ann Arbor, has generated narrowband coherent terahertz radiation, or T-rays, with periodically poled LiNbO3 (PPLN). T-rays have...
Quantum-Well Infrared Photodetector Works
A research team from Georgia State University in Atlanta, the National Research Council’s Institute for Microstructural Sciences in Ottawa and Cornell University in Ithaca, N.Y., has produced a...
Inverted Structure Yields Solar-Blind UV Detector
GOLETA, Calif. -- A team from Cree Lighting Co. has devised an AlGaN photodiode that may find application as a solar-blind UV detector. Whether locating faults on power lines or tracking incoming...
light speed
Corning Buys Pirelli’s Photonics; $3.6 Billion Takes (Almost) All
CORNING, N.Y. -- Lithium niobate modulator technology and submarine 980-nm pump diodes join Corning Inc.’s family of photonics technologies after its September purchase of Pirelli S.p.A.’s optical technologies business. For $3.6 billion plus a $180 million bonus if Pirelli meets some business milestones, Corning takes over 90 percent of the Milan, Italy, business. Cisco Systems Inc....
Small Businesses: Need Cash?
Companies with fewer than 500 employees can apply between Dec. 1, 2000, and Jan. 10, 2001, for a share of the $556 million that the US Department of Defense Small Business Innovation Research program...
Photonics Lures Federal Funds
GAITHERSBURG, Md. -- Sixteen photonics projects have won contracts valued at more than $54 million under the US Commerce Department’s Advanced Technology Program. The projects cover several...
Research Centers to Focus on Sensing, Materials
The National Science Foundation has established several university-based research centers to focus on advanced microsystem and sensing technologies, and on materials research. The Center for...
Danish and French Fiber Test Companies Plan Merger
GN Great Nordic of Copenhagen, Denmark, has announced plans to acquire the French fiber optic test firm Photonetics and to merge it into its GN Nettest subsidiary. Although GN Nettest has offered...
Northrop, Indigo Connect for IR
Advanced infrared detector fabrication is the goal of an alliance between Northrop Grumman Corp.’s Electronic Sensors and Systems Sector in Baltimore and Indigo Systems Corp. of Santa Barbara,...
Lasers to Iran? Maybe Not
ST. PETERSBURG, Russia -- A copper vapor laser and some commercially minded scientists sit at the center of an international technology transfer crisis. The New York Times reported in September that...
Photonics Firms Stress Communications
SANTA CLARA, Calif. -- Because investors are eagerly buying up stock for companies with the words "optical communication" in their description, photonics firms are continuing to eagerly reorganize...
GSI Lumonics Acquires, Sells Units
GSI Lumonics Inc. of Kanata, Ontario, Canada, has acquired precision optics manufacturer General Optics Inc. of Moorpark, Calif., for an unspecified cash payment. Meanwhile, it completed the sale of...
Accent on Applications
Camera Is Faster than a Speeding Bullet
To understand how things work, engineers must first comprehend how things fail. But what happens if the event of failure occurs with such force and speed that it is nearly impossible to view, much...
No ’Holes’ Barred from Twin-Rod Nd:YAG Solution
Air cools most of today’s non-flight industrial gas turbines using the effusion-cooled design approach. This process requires thousands of tiny holes drilled through the combustor skin to allow...
Laser Makes Its Mark in Engraving Applications
Along with its contributions to the telecommunications, semiconductor and defense markets, photonics has revolutionized smaller industries, including the trophy and awards trade, where lasers are...
Infrared Detector Sniffs Out Gas Leaks
About 7000 miles of distributed gas pipelines wend their way beneath the Binghamton, N.Y., metropolitan area, home to more than 200,000 residents. New York State Electric and Gas Corp., also known as...
Presstime Bulletin
Vibrational Spectroscopy: Now in 3-D
A team at the University of Illinois in Urbana-Champaign has developed a multispectral, time-correlated vibrational spectroscopy technique that promises to advance chemistry and nanotechnology. The technique, which will be described in the Journal of Physical Chemistry, enables researchers to monitor the dynamic properties of a sample in real time on femtosecond time scales. The researchers have...
Fiber Amplifiers Subject of Dispute
The board of trustees of Stanford University in Stanford, Calif., and Litton Advanced Systems Inc. of Woodland Hills, Calif., have filed suit against more than a dozen players in the...
Congress Opens Doors to Skilled Foreign Workers
At the urging of lobbyists for high-tech companies and with the support of the Clinton administration, Congress has passed a bill that will increase the number of six-year H-1B visas for skilled,...
Kodak Announces Worldwide Availability of CCD and CMOS Sensor Products
ROCHESTER, N.Y., -- Eastman Kodak Company has announced an initiative to market its solid-state sensor technology into worldwide digital imaging markets through the company’s Image Sensor...
Kodak Drives CCD Integration and Performance With New Interline Image Sensor
ROCHESTER, N.Y., -- Eastman Kodak Company has introduced the Kodak Digital Science KAI-1020 image sensor, a new one million pixel interline CCD imager which integrates most of the discrete components...
Kodak Announces Two New Large Format CCD Image Sensors
OCHESTER, N.Y. -- Eastman Kodak Company has announced the latest additions to its line of Kodak Blue Plus Color CCDs, the KAF-5100CE and the KAF-16801CE. These image sensors bolster the...
New Devices Offer CCD-like Performance With The Integration and Cost Benefits Of CMOS
Eastman Kodak Company has announced the latest additions to its line of Kodak Digital Science image sensors and the first to be based on CMOS technology. The KAC-0310 VGA sensor and the KAC-1310...
NEC Achieves 6.4-Tb/s Transmission
Researchers from Tokyo-based NEC Corp. reported at the European Community Optical Communication Conference in Munich, Germany, that they have demonstrated a transmission capacity of 6.4 Tb/s over a...
Chemists Win Nobel for Optical Polymers
The Royal Swedish Academy of Sciences has awarded the Nobel Prize in chemistry to Alan J. Heeger, Alan G. MacDiarmid and Hideki Shirakawa. The researchers are being honored for their work with...
Products
ENHANCED PHOTODETECTORS
Applied Scintillation Technologies Ltd. has developed custom coatings that can be applied to standard silicon photodetectors. Spectrally shifted silicon devices display sensitivity to 150 nm. Laser profiling, UV spectroscopy, general UV analysis and detection, and spark analysis of metals are among its applications. Coated to respond in the IR, silicon detectors will display broad and specific...
Scintacor Ltd.
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PHOTODIODE METER
A dual photodiode meter for testing laser diode modules is available from Keithley Instruments Inc. Model 2500 features fast, low-level current measurement, optical power measurement, extended...
Keithley Instruments Inc.
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CHIP SETS
Two 10-Gb/s chip sets for OC-192 and STM-64 applications have been announced by Vitesse Semiconductor Corp. The 16:1 multiplexer (VSC8173) and 1:16 demultiplexer (VSC8174) have a reduced power...
Vitesse Semiconductor Corp.
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FIBER COUPLERS
Alliance Fiber Optic Products Inc. has released fused fiber couplers with ultralow polarization-dependent loss (PDL). These components offer a PDL less than 0.03 dB across the 1550-nm wideband...
Alliance Fiber Optic Products Inc.
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AMPLIFIER DESIGN
Optiwave Corp. has released version 2.0 of its EDFA_Design optical fiber amplifier and laser design software. It addresses all aspects of erbium-doped fiber amplifier engineering, from optimizing...
Optiwave Systems Inc.
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IMAGE ACQUISITION BOARD
National Instruments Corp. (UK) Ltd.'s PCI image acquisition board uses National Semiconductor's serial data technology to link digital cameras with personal computers. The Camera Link technology...
National Instruments Corp.
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PCI FRAME GRABBER
Euresys sa has developed a true-color modular PCI frame grabber for video surveillance applications that can connect to up to 16 unsynchronized cameras. The Picolo Pro 3 features switching times less...
Euresys SA
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MACHINE VISION SOFTWARE
Industrial Vision Systems Ltd. has released the latest version of its machine vision software. NeuroCheck 5.0 includes Internet technology support for HTML error handling and extended file output...
Industrial Vision Systems Ltd.
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EPOXY ADHESIVE
A two-component epoxy adhesive has been introduced by Master Bond Inc. EP30ND cures at room temperature, or more rapidly at elevated temperatures with a 4-to-1 mix ratio, weight or volume. It...
Master Bond Inc.
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OPTICAL ANALYSIS SOFTWARE
Optical Research Associates has released version 3.0 of LightTools with 3-D rendering capabilities and the ability to model scattering surfaces. The software has an OpenGL rendering engine that...
Synopsys Inc., Optical Solutions Group
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WATER CIRCULATOR
Ophir Optronics Inc.'s portable water circulator was designed for use with its line of water-cooled heads in high-power laser measurements. It is wheel-mounted and equipped with quick-connect...
MKS Ophir, Light & Measurement
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CURRENT AMPLIFIER
The variable-gain, low-noise current amplifier from Femto GmbH can be used with a lock-in amplifier to provide a 1.2-kHz bandwidth at high gain settings. The DLPCA-200 has a switchable 10-Hz low-pass...
Femto Messtechnik GmbH
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EPOXY SYSTEM
Angstrom Bond AB9226 is a fast-gelling epoxy that can be used for bonding optics and for field terminations. This two-part adhesive from Fiber Optic Center Inc. cures in 5 to 10 min and can be...
Fiber Optic Center Inc.
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HEAT EXCHANGERS
Lytron Inc.'s custom plate-fin heat exchangers can handle proof pressures up to 750 psi. These all-aluminum components can be designed in counter, crossflow or parallel configurations for any...
Boyd Corp.
PORTABLE SPECTRORADIOMETER
A miniature fiber optic spectroradiometer has been released by StellarNet Inc. The EPP2000 is portable and interfaces to a computer's enhanced printer port. It is available in a concave grating...
StellarNet Inc.
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MACHINING SYSTEM
Precitech Inc.'s Nanoform 700 is a precision machining system designed for aspheric turning and grinding applications. It has a load capacity of 125 kg and a swing capacity of 700 mm. This two-axis...
AMETEK Precitech Inc.
UV-VIS SOFTWARE
UV Probe software available from Shimadzu Scientific Instruments Inc. is compatible with the company's UV-1601, -2401, -2501, -2101 and -3101 spectrophotometers. It operates under Windows 95/98 and...
Shimadzu Scientific Instruments Inc.
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LASER BEAM ANALYSIS
FJW Optical Systems Inc. has introduced the Speckle Buster for use in interferogram analysis and beam profiling work. It unmasks the intensity profile of coherent beams and reduces speckle noise in...
FJW Optical Systems Inc.
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LASER CONTROL
Edmund Industrial Optics has added two control options to its laser diode modules for applications that require strobing of the illumination source. The syncro option can be used for single- and...
Edmund Optics Inc.
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PLATE POLARIZERS
A line of wideband, high-damage-threshold polarizers for use with high-power and ultrafast lasers has been launched by Alpine Research Optics. These plate polarizers feature a broad spectral...
Alpine Research Optics
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UV LASERS
Light Age Inc. offers two full-capacity, solid-state alexandrite laser systems for writing fiber Bragg gratings. The PAL-PRO-UV can be used for writing gratings with interferometric or phase-mask...
Light Age Inc.
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CUSTOM LAMP
Directed Light Inc. offers custom lamp development in addition to its in-stock products. The company works with Heraeus Noblelight Ltd. to recommend the right lamp for specific applications. It also...
Directed Light Inc.
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LED BACKLIGHT
The new B-MLA backlight from Omron Electronics Inc. features uniform brightness as a result of its microlens array technology. It provides the same contrast across a whole screen and a brightness of...
Omron Automation
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SINGLE-CHIP IC
A single-chip, three-band-tuner integrated circuit (IC) for cable modems and set-top boxes has been introduced by Infineon Technologies. The TUA6030 is available for analog and digital terrestrial...
INFICON
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ASPHERIC LENSES
QED Technologies and Schneider Opticmachines have created a line of optics-manufacturing equipment for generating and polishing high-precision aspheres. This "turnkey" system grinds, polishes and...
QED Technologies Inc.
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UV EDGE FILTERS
UV alpha-epsilon long-wave pass edge filters for UV Raman spectroscopy applications have been introduced by Omega Optical Inc. Available for any wavelength down to 229 nm, they block scattered UV...
Omega Optical LLC
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OPTICAL FILTERS
Optical network and digital imaging products from Ocean Optics Inc. are based on the company's Dichroic Filter Array (DFA) technology. The technology combines modern optical thin-film deposition...
Ocean Optics - Part of Ocean Insight
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SAPPHIRE LENSES
Meller Optics Inc. designed its sapphire lenses for use in harsh environments and in near-IR laser systems such as erbium and holmium medical lasers. They are available in 1/2- to 2-in.-diameter...
Meller Optics Inc.
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OPTICAL TARGETS
Spherically mounted retroreflector optical targets from SMX Corp. feature a new seam design that improves the quality of the fit between mirror panels, protecting against temperature variations and...
FARO Technologies Inc.
MOTION CONTROLLERS
The Unidex 500 family of multiaxis motion controllers from Aerotech Inc. come in PCI and ISA bus formats. Each format has base, plus and ultra models, offering a choice of performance levels. The...
Aerotech Inc.
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SUBMINIATURE POSITIONING DEVICE
The DF-1 differential micrometer head from Del-Tron Precision Inc. can be mounted to linear slides or stages to position cameras, lenses, part locators and other devices requiring precision...
Del-Tron Precision Inc.
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DIGITAL COLOR SYSTEM
The DX digital color system from Kappa opto-electronics Inc. comprises a camera, a PCI interface board and control software. Features include a 1392 x 1040-pixel progressive scan CCD, 12-bit...
Kappa optronics GmbH
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FLUORESCENCE MICROSCOPE
The Axioplan 2 imaging research microscope from Carl Zeiss Inc. is optimized for fluorescence in situ hybridization (FISH) and M-FISH examinations in genetics, and for multichannel fluorescence...
Carl Zeiss Microscopy LLC
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INTEGRATED SPHERE
Simultaneous output power and spectral measurement of laser diodes can be performed with an integrated sphere equipped with a fiber-pigtailed collimator such as the F-COL50-85 from Newport...
MKS/Newport
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MULTICHANNEL TEST SETS
The FST series of test sets from Electro-Optical Systems Inc. is designed for laser diode life testing and other applications requiring continuous monitoring of multichannel outputs. The basic module...
Electro-Optical Systems Inc.
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