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Photonics Spectra - July 2000
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Issue Library
Features
Light Levels and Noise Guide Detector Choices
Photonics is an enabling technology that creates benefits and value far in excess of the cost of the optoelectronic components that are used in a device or system. As such, photonics is responsible...
Catch Your Drift
Whether a laboratory researcher or an optical-equipment manufacturer, you’ll be concerned with how temperature changes affect your optical system. A thermally stable mount will lead to improved...
Ion Lasers:
When diode-pumped solid-state lasers first appeared in the marketplace during the early 1990s, argon-ion, helium-neon and other classic laboratory lasers seemed doomed. The newer technology was more...
Bring Images to Life
Making photographs at the microscope can be difficult. For example, magnification produces problems associated with the depth of field, and diffraction creates problems with image resolution. One of...
Thorough Testing Produces Fiber Lighting System
A fiber optic distributed lighting system can illuminate exterior door handles, puddle lamps and running boards in vehicles, eliminating the need for incandescent lamps or light-emitting diodes in...
Death, Taxes and Shot Noise
Have you ever watched a live video line from your fine camera on an oscilloscope? Were you bothered by the pixels bouncing up and down from time to time? The sensor manufacturer promised a...
Measuring Optical Quality
... The optics industry has helped to shape these standards for indicating tolerances. At the same time, methods of measurements are becoming standardized, so not only does everyone understand...
Back-Illuminated Camera Images the Future of Spaceflight
Rocket power blazed the early trails that took us into orbit, but aerospace engineers have endeavored to develop a jet-propelled aircraft able to reach orbital velocities from Mach 20 to 25. One...
Tech Pulse
Researchers Reveal Aequorin’s Structure
Aequorin, a photoprotein widely used in biomedicine to study the role of calcium in cellular functions, had resisted examination by x-ray crystallography over the 38 years since it was first...
Study Confirms Attosecond Pulses
IRÁKLION, Greece -- Although researchers have achieved laser pulses as short as a few femtoseconds, attosecond pulses have proved prohibitively difficult -- until now. A group at the...
Microdevice Protects Sensors in a Blink
GAINESVILLE, Fla. -- As concern grows about the potential for powerful lasers to disable satellite sensors, engineers continue to develop protective solutions (see Photonics Spectra, June 2000, p....
Solid-State Blue Laser Unveiled
SANTA CLARA, Calif. -- Researchers at Coherent Inc., Laser Group, have developed the prototype of a diode-pumped solid-state laser that emits light at 488 nm, addressing what has been a major concern...
Coral Reefs Yield Fluorescing Dyes for In Vivo Labeling
MOSCOW -- Green fluorescent protein extracted from luminescent jellyfish has been used as a marker for gene expression and protein localization in a number of biological systems. Despite the...
Slow Dance Unites Atom, Photon
GARCHING, Germany -- Researchers from the Max Planck Institute for Quantum Optics recently created a photonic molecule. They developed a setup to temporarily bind a single photon to a single atom, a...
Arrays Advance DNA Detection
MEDFORD, Mass. -- Researchers from Tufts University have devised a screening method using a bead-based fiber optic array that could dramatically increase the speed and sensitivity of DNA sampling. A...
Dry Process Creates Clearer Fibers
CAMBRIDGE, Mass. -- Although today’s fiber optic cables may be able to handle today’s telecommunications traffic, the future will demand considerably more bandwidth. Trying to resolve an...
Free-Electron Laser Plunges into the UV
A team at the Deutsches Elektronen Synchrotron facility in Hamburg, Germany, reported that it has produced coherent light at 110 nm with its free-electron laser. The work is part of a plan to...
Technique Unveils Gene Process
BERKELEY, Calif. -- Gene transcription is the first step in the process whereby information stored in DNA patterns is used to manufacture protein. When an RNA polymerase enzyme latches onto a DNA...
Mode-Locked Laser Hits High Power
MOUNTAIN VIEW, Calif. -- Engineers at Spectra-Physics Lasers Inc. have hit a new high for visible output powers in a laser based on saturable Bragg reflector technology. The frequency-doubled,...
Mirror Readied for Binocular Telescope
Scientists at the University of Arizona’s Steward Observatory Mirror Lab in Tucson have prepared the second 8.4-m mirror for the Large Binocular Telescope, scheduled for completion in 2004....
Novalux Offers a Peek at Its Top-Secret Laser
Novalux, a start-up based in Sunnyvale, Calif., has developed a high-power laser diode that it claims is a breakthrough technology for optical telecommunications. The device, which has been dubbed...
High-Reflection Mirror Is All-Polymer Film
ST. PAUL, Minn. -- A new generation of multilayer polymer film developed by 3M Corp. shows advanced control of optical reflection at interfaces. In its commercial release last year, the film...
Silicon Crystal Used as X-ray Resonator
GRENOBLE, France -- Short-wavelength light presents special difficulties for researchers. Hard x-rays have wavelengths thousands of times smaller than visible light, enabling them to skip the...
Signals Exceed Light’s Speed
FLORENCE, Italy -- An established concept in physics -- the impossibility of transmitting a signal faster than the speed of light in a vacuum -- is again up for debate. Various teams have transmitted...
LEDs Offer Fast Data Transmission
TAMPERE, Finland -- With properties somewhere between a standard LED and a laser diode, resonant-cavity LEDs produce intense light from quantum wells. Compared with conventional LEDs, the...
Food Wrap Foils Microbes
Researchers at Toxin Alert Inc. in Mississauga, Ontario, Canada, have developed a plastic wrap that they hope will detect dangerous levels of bacteria in food. The product, which will be 15 to 25...
light speed
ADC Plans Acquisition of Altitun, Ibsen
Minneapolis-based ADC Telecommunications Inc. announced plans to acquire Altitun AB of Kista, Sweden, a manufacturer of tunable lasers for optical telecommunications. Under terms of the proposed...
From Analyzers to Zoom Lenses
STANFORD, Calif. -- Nuts? Planters. Cornflakes? Kellogg’s. Bookseller? Barnes & Noble. Lidar systems? Stumped? Lidar as a product, and lidar systems under a brand name, aren’t...
Clam Chowder and Photonics
WASHINGTON -- California may be the sentimental home of the semiconductor and electronics industries, but most US photonics manufacturing jobs are located in the Northeast, suggests a report by the...
JDS Uniphase Bullish on Chinese Crystal Maker
SAN JOSE, Calif. -- Industry insiders are speculating whether there will be a temporary shortage of doped vanadate crystals for laser production following JDS Uniphase Corp.’s buyout of crystal...
New Schedule, Budget Set for Ignition Facility
US Secretary of Energy Bill Richardson presented his plan for the National Ignition Facility at Lawrence Livermore National Laboratory in Livermore, Calif. The Department of Energy will increase...
Iris Recognition Moves to Airport
EyeTicket Corp. of McLean, Va., unveiled an evaluation program of its EyePass iris-recognition system in restricted areas at Charlotte/Douglas International Airport in Charlotte, N.C. EyePass...
SpaceDev Plans Commercial Space Missions
The FedEx agent hung up on us when we inquired about sending a package to a near-Earth asteroid. But James W. Benson, founder of SpaceDev Inc., said he could not only deliver our pretend package (a...
JDS Uniphase’s Kalkhoven Retires
Kevin Kalkhoven of JDS Uniphase Corp. of Nepean, Ontario, Canada, and San Jose, Calif., has retired from his position as CEO and co-chairman of the board of directors. Kalkhoven, who is succeeded as...
Cameras Considered for Aviation Safety
A recommendation by the National Transportation Safety Board may put miniature digital cameras in the air to detect mechanical problems in airplanes and to monitor flight crews. The agency suggested...
Sizing Up the Stars
PASADENA, Calif. -- Bigger is better, some astronomers believe. That’s why a gaggle of major universities and international science consortiums are competing for bragging rights to big...
Accent on Applications
Magnification Lens Shrinks Diamond Spectrophotometer
Diamonds are valued by their carat weight, clarity, color and cut. Weight and clarity are integral to the quality of the stone and can be measured by empirical standards. Valuation by color also has...
Portable Spectrometer Reduces Mill Downtime
When a paper mill suspects contamination in the production line, the manufacturer faces costly downtime. Technical support specialists must be called in to test for the buildup of various deposits...
Nd:YAG Gets a Bead on Reed Switches
Since its development for telecommunications applications, the reed switch has found use in alarm systems and proximity sensors. It generally incorporates two contacts hermetically sealed within a...
Compact Infrared Camera Takes Wing
The US and its allies have placed increasing emphasis on improving military reconnaissance capabilities while minimizing the risk to personnel. Combined, these demands have helped to fuel interest in...
Presstime Bulletin
Linos Buys Rodenstock Prazisionsoptik
As part of an effort to consolidate its business in the corrective lens market, Rodenstock Technologie Holding GmbH of Munich, Germany, has sold Rodenstock Präzisionsoptik GmbH, also of Munich, to Linos AG of Göttingen. The deal includes Rodenstock’s US facility, Rodenstock Precision Optics Inc., in Rockford, Ill. Linos announced plans to establish an independent development and...
Presstek Establishes Laser Diode Subsidiary
Presstek Inc. of Hudson, N.H., a manufacturer of products for direct-to-press and computer-to-press applications in the printing and publishing industries, announced that it has formed a laser...
Laser Power’s ’Suitors’ Return
Union Minière SA of Brussels, Belgium, and II-VI Inc. of Saxonburg, Pa., returned to the bargaining table with San Diego-based infrared optics manufacturer Laser Power Corp., following Laser...
Antimissile Laser Passes Field Test
TRW Inc.’s Space & Electronics Group of Redondo Beach, Calif., reported that the Tactical High Energy Laser has passed its initial live-fire test at White Sands Missile Range in New Mexico....
Lab Produces 1.3-micron VCSEL
Researchers at Sandia National Laboratories in Albuquerque, N.M., have developed a vertical-cavity surface-emitting laser (VCSEL) that may find applications in long-haul optical networks. The device,...
Products
HANDHELD RADIOMETER
Solar Light Co. has introduced a handheld radiometer with NIST-traceable detectors that are suitable for laboratory, manufacturing and industrial monitoring, and for radiometry applications. The...
Solar Light Co. LLC
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INTEGRATED PHOTODETECTOR
The IPD-10 is an integrated photodetector from Santec Europe Ltd. designed for integration into high-speed DWDM transmission systems. The device allows real-time monitoring of the optical power...
Santec Corp.
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HIGH-SPEED PHOTOMULTIPLIER TUBE
Hamamatsu Corp. has released a high-sensitivity, high-speed photomultiplier tube that can simultaneously detect multiple wavelengths. The R5900F-L16's matching interference filter array, which is...
Hamamatsu Corporation
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FO COLLIMATORS
NSG America Inc. announces its Selfoc microfiber collimators for dense wavelength division multiplexing systems. The company says the collimators' 1-mm-diameter lenses provide a 20% larger effective...
Go!Foton Corp.
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EDFA MODULES
BaySpec Inc. designed the IntelliGain series of erbium-doped fiber amplifier modules for OEM integration. The Metro-I, Metro-II and Metro-III offer different gains and power levels. Configurations...
BaySpec Inc.
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HOLOGRAPHIC GRATINGS
Diode laser tuning gratings from Spectrogon US Inc. are designed for wavelength tuning of external-cavity diode lasers. The groove depth of the holographic gratings is optimized for maximum...
Spectrogon US Inc.
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MINI SPECTROMETER
Ocean Optics Inc.'s USB2000, an even smaller version of the S2000 miniature fiber optic spectrometer, plugs into the universal serial bus port of any desktop or notebook PC that uses Windows 98. It...
Ocean Optics - Part of Ocean Insight
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OPTICAL RECEIVER
Discovery Semiconductors Inc. has introduced an amplified optical receiver with a typical bandwidth of 100 kHz to 20 GHz. The Model DSC-R401ER provides front-end band-width that exceeds the bit rate...
Discovery Semiconductors Inc.
AUTO IMAGE CAPTURE
A software-controlled Z-stepper has been created by Syncroscopy to be used with Auto-Montage, its digital imaging system for optical microscopes. When used with Auto-Montage's integrated frame...
Synoptics Ltd.
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HANDHELD VIDEO CAMERA
The N'Spector handheld video pen is a self-illuminating, color video camera for accessing and inspecting confined areas. Navitar Inc. says its device has a larger depth of focus than traditional...
Navitar Inc.
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TETHERED CAMERA
The Silicon Eyeball II camera for laboratory use has been released by Data Optics Inc. The camera offers 800 x 600-pixel Super VGA resolution -- an improvement over the original Silicon Eyeball's 640...
Data Optics Inc.
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CONFORMAL COATINGS
Solvent-free conformal coatings available from Dymax Corp. are matched with processing systems that minimize deposition and curing time. When the coatings are dispensed precisely and cured with...
Dymax, Headquarters
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POWER SUPPLY/SIMMER
A pair of power supply and simmer modules from Analog Modules Inc. have a low-profile, open-board assembly, making them suitable for integration into laser platforms. The Model 575 capacitor-charging...
Analog Modules Inc.
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6-kW LASER
The FH 6000 laser provides 6000 W for cutting, welding and cladding applications. The CO2 device from PRC Laser can process carbon steel up to 40 mm thick, stainless steel up to 32 mm and aluminum up...
PRC Laser Corp.
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BEAM EXPANDERS
Off-axis laser beam expanders offered by Optical Surfaces Ltd. have focus and collimation interferometrically set in the factory so that the technician need adjust only the direction of the device....
Optical Surfaces Ltd.
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BLUE LASER DIODES
Hero Electronics Ltd. has added low-power blue laser diode collimator pens to its range of laser modules and diodes. Packaged in several sizes, the devices deliver output of up to 5 mW at 405 nm....
APC Hero
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FIVE-AXIS LASER TOOL
The Lasercell 1005 from Trumpf Inc., Laser Technology Center, uses five-axis transformation, 3-D height regulation, spline interpolation and laser power control for scratch-free cutting of 3-D parts....
TRUMPF Inc., Laser Technology Center
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75-W GREEN LASER
A Q-switched laser from Coherent Inc., Laser Group, is suitable for scientific and industrial applications, including materials processing and Ti:sapphire and dye laser pumping. The Corona 532-75's...
Coherent Inc.
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LASER MARKER
The Allprint CS uses a sealed-off CO2 laser to mark up to 20,000 mm/s or 400 characters per second. Alltec GmbH designed the marker for the electronics industry, including standardization modules and...
ALLTEC Angewandte Laserlicht Technologie GmbH, FOBA Laser Marking + Engraving
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BEAM PROFILER
Ophir Optronics Inc. has released the BeamStar CCD beam profiler system for use with pulsed and continuous-wave lasers with up to 12 decades of dynamic range. When the included filters are combined...
MKS Ophir, Light & Measurement
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COMPACT DIGITAL OSCILLOSCOPE
The Literunner LP142 digital oscilloscope features vertical accuracy within 2% and horizontal accuracy of 50 ppm, or 0.005%. LeCroy Corp. designed the device with a housing that measures 6.5 x 8.25 x...
Teledyne LeCroy
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POWER AMPLIFIERS
Trek Inc.'s new series of power amplifiers have four-quadrant, active-output stage that sinks current into reactive loads throughout the output voltage range. Model 20/20C offers ±20 kV,...
TREK Inc.
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SAPPHIRE OPTICS
Sapphire optics that have 9-Mohs surface hardness, have thermal stability to 2000 °C and can withstand pressures up to 4000 psi, depending on configuration, are available from Meller Optics Inc....
Meller Optics Inc.
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ZOOM BEAM EXPANDER
An afocal zoom expander from Sill Optics GmbH & Co. KG has a variable expansion ratio from 1x to 8x in steps of 0.05x and an entrance aperture of 3 to 6 mm. The motorized zoom telescope is...
Sill Optics
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LINEAR ENCODERS
RGH41 linear encoders from Renishaw Inc. are suitable for linear motors and critical-positioning motion systems. The devices, which measure 15 x 15 x 9.8 mm, deliver speeds up to 15 m/s with...
Renishaw Inc.
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MIRROR MOUNTS
Linos Photonics GmbH's miniature kinematic mirror mounts are designed for research and industrial applications where precise adjustment is required or space is limited. The MF-25PF has top-mounted...
Qioptiq Photonics GmbH & Co. KG
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NEAR-IR ANALYZERS
LT Industries Inc. has designed a family of near-infrared analyzers for the pharmaceutical and functional food industries. The PhytoScan-B system can monitor solid samples of plants for the presence...
Verum Analytics
AUTOSAMPLER
Pike Technologies Inc. says its autosampler, developed to work with near-IR spectrometers equipped with fiber optic probes, can analyze multiple samples unattended. The unit was designed to accept...
PIKE Technologies Inc.
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INDUSTRIAL AUTOMATION
The Advanced Manufacturing Systems series of automation products includes high-density burn-in racks, and high-throughput video metrology and pallet-loading assembly systems. Newport Corp. designed...
MKS/Newport
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SPECTROPHOTOMETER
PerkinElmer Instruments has introduced a UV/VIS spectrophotometer with a low-noise photomultiplier and a demountable sample compartment. The Lambda 800 double-beam, double-monochromator system has a...
PerkinElmer Instruments
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PROCESS PHOTOMETER
Providing rapid sequential measurements with up to eight probes, the ChemViewMx allows measurements in the UV, VIS and NIR with one analyzer. One probe from the fiber optic-based process photometer...
Synopsys Inc., Optical Solutions Group
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REFLECTION MEASUREMENT
Corona industrial reflection/transmission measuring heads from Carl Zeiss Jena GmbH are suitable for use in the visible to near-infrared range from 350 to more than 2000 nm. This enables the...
Carl Zeiss Microscopy LLC
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SIGNAL ANALYZER
Anritsu Co.'s portable analyzer can measure SONET, SDH, PDH and ATM for use during the R&D and manufacture of optical circuits, as well as during the installation and maintenance of fiber...
Anritsu Co.
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TEST RIBBON FIBERS
Ribbon fiber test kits from Exfo Electro-Optical Engineering Inc. were developed for ribbon cable installation and maintenance. The units are compatible with the FTB-300 universal test system and its...
EXFO Inc.
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