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Photonics Spectra - May 2001
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Issue Library
Features
Chameleon Lasers
Cell biologists have long used wavelength discrimination to optically map structure and function at the cellular and subcellular level. The advent of the confocal laser scanning microscope has enabled such observations in three dimensions, close to the diffraction limit. However, the photobleaching and photodamage related to ultraviolet or visible lasers have limited their ability to produce...
What Color Is My LED?
Just about everyone is familiar with light-emitting diodes (LEDs) from their use as indicator lights and numeric displays on consumer electronic devices. Beyond that, low light output and lack of...
That's Entertainment
The recent establishment of the Purdue International Center for Entertainment Technology at Purdue University in West Lafayette, Ind., is a formal acknowledgment of entertainment as a vibrant...
UV Laser Safely Cleans Historical Glass
Historical glass can suffer a tremendous loss of transparency from atmospheric or biogenic corrosion resulting from long-term exposure to air pollutants and humidity (Figure 1). Surface layers and...
Efficiency Experts
For almost a decade, the laser industry has labored to produce a compact, reliable semiconductor-based laser that emits a blue beam. It is a tale replete with exotic design schemes, from upconversion...
A Little Enlightenment
When automated inspection became a viable process, engineers concentrated on the camera and optics, the algorithms, the interface hardware and the processor. Only rarely did they pay attention to the...
Laboratories Turn to Photonics
In last year's look at the laboratory market, bench scientists emphasized the need for greater sensitivity, power and throughput, to the exclusion of such trifling considerations as price. To...
Keeping Up with the LEDs
Light-emitting diodes (LEDs) appear to be everywhere these days. They are used in internal and external automotive lighting applications, traffic lights and some information display systems. But...
Light Technology, Heavy Manufacturing
At KLA-Tencor Corp. of San Jose, Calif., the emphasis is on the detection and measurement of small things, items with dimensions of less than a micron. The company makes yield management and...
Will Photonics Find Its Place in Medicine?
New medical applications for lasers and imaging seem to be around every corner, but this does not mean that doctors will invest in new systems. To incorporate lasers into their practices, doctors...
Future-Proofing Defense
The new political administration wants to transform America's defense structure from a Cold War fighting force into a high-tech, futuristic military. But deciding which weapons programs will receive...
Tools to Beat the Bandwidth
The demand for more bandwidth has undergone something analogous to chromatic dispersion: Its original message has changed shape over time. Perhaps because of the simplified format of marketing and...
'Wireless' Meets Photonics
Optical communication offers considerable growth potential to the continuously increasing useful transmitted data rate demand. Constellations of communications satellites will benefit from the...
Tech Pulse
Multiplexer Delivers 1600 Channels
COLUMBIA, Md. -- The tighter bit density of 40-Gb/s signals makes them more vulnerable to chromatic and polarization mode dispersion as well as nonlinear optical effects. But other than laying more...
Laser Cooling of Solids Advances
ALBUQUERQUE, N.M. -- Since 1995, when a group of scientists discovered how to cool solids with laser light, the prospect of improving the technique has enthralled many researchers. Now a group from...
Laser Tested for Antimissile System
Lockheed Martin Missiles & Space of Sunnyvale, Calif., announced that Raytheon Co. Electronic Systems of El Segundo, Calif., has conducted tests of the Airborne Laser’s Track Illuminator...
Blue LEDs Open Door to Microdisplays
MANHATTAN, Kan. -- Physicists at Kansas State University have created a microdisplay based on InGaN/GaN quantum wells that is integrated on a semiconductor chip and is only 0.5 mm square. The group...
Undercut Structure Boosts VCSEL Performance
A double intracavity contacted structure developed at the University of California in Santa Barbara may lead to vertical-cavity surface-emitting lasers (VCSELs) that use lattice-matched distributed...
Chirped Bragg Grating Covers the C-Band
AUSTIN, Texas -- Twice in as many years, researchers at 3M have claimed breakthroughs in their fabrication of chirped fiber Bragg gratings. This year’s breakthrough, however, appears to be the...
Bubbly Polymer Promises Photonic Crystals
Scientists at Georgia Institute of Technology in Atlanta, North Carolina State University in Raleigh and Lucent Technologies Inc.’s Bell Laboratories in Murray Hill, N.J., may have discovered a...
Spectrometry Samples Crude Oil
RIDGEFIELD, Conn. -- Oil exploration requires an investment of time, money and material. But even when crude is found, questions about its composition must be answered so the type of processing it...
Sensor Classifies Demolition Waste
Researchers at the University of Nijmegen in Nijmegen, the Netherlands, have reported that preprocessing techniques can mitigate the undesirable scattering effects that compromise the infrared...
Dimension-Reduction Sensing Demonstrated
A dimension-reduction technique demonstrated by researchers at the University of South Carolina in Columbia and ChemIcon Inc. in Pittsburgh promises to expand fiber-based multiwavelength and...
Epoxy Mirrors Are Strong and Light
MOSCOW, Idaho -- When Univer-sity of Idaho researchers contemplated designing a 300-m, open-path Fourier transform infrared (FTIR) spectrometer, they realized that the mirrors they needed would be...
System Detects ’Evil Twins’
FAYETTEVILLE, Ark. -- In the pharmaceutical industry, many enantiomers, or mirror-image molecules, are harmless fillers, but some are truly evil twins that can cause birth defects or other health...
KVH Introduces ActiveFiber
KVH Industries Inc. of Middletown, R.I., presented its ActiveFiber technology at OFC in Anaheim, Calif. The company said that the first ActiveFiber product would be a 40-Gb/s polarimetric modulator...
Crystals Exhibit Lasing Oscillation
A team from NTT Basic Research Laboratories and NTT Photonics Laboratories, both in Atsugi, Japan, has reported directional lasing oscillation in 2-D organic photonic crystals. The effect, which the...
Researchers Prospect for Martian Water
MOUNTAIN VIEW, Calif. -- The image of John Carter’s Mars, crisscrossed with canals, has been relegated to pulp sci-fi curiosity, but there is much evidence that liquid water existed on the...
Raman Imaging Identifies Microfossils
BIRMINGHAM, Ala. -- Micropaleontology has become a viable science only in the last four decades, but it has already enabled researchers to chart the history of life on Earth back 3.5 billion years to...
Nanotubes Enable Flat Panel Displays
EVANSTON, Ill. -- Flat panel displays are desirable where space is at a premium: in portable electronic devices and as computer monitors and television sets. While the demand is high for the...
Optics Delivered to Fusion Research Lab
Researchers at Osaka University’s Institute of Laser Engineering in Japan have incorporated three precision mirrors from Optical Surfaces Ltd. of Surrey, UK, into the Gekko XII laser facility....
Sensor Sniffs Out Fuel Vapors
ABERDEEN, Md. -- Fuel vapors pose a fire hazard to crews aboard military vehicles, especially because they use a middle-distillate fuel that is similar to commercial kerosene. Now researchers at the...
Synchrotron Is Ideal Source for IR Microscopy
BERKELEY, Calif. -- Mid-infrared light is immensely useful to biological studies because it offers a direct probe into the vibrational modes of the chemical bonds that hold atoms together. While...
Fiber Sensors Ensure Train Safety
URBANA, Ill. -- Fiber optic sensors may soon play a crucial role in preventing the derailment of freight and passenger trains. The sensors monitor the weight of a passing train, defects in its wheels...
Laser Speeds Trimming Technique
MONTREAL -- Recent advances in telecommunications have brought new challenges in integrating analog and digital components. Analog components require high accuracy, for example, which slows...
Nichia Offers True Blue Laser Diodes
Nichia Corp. of Tokyo has announced the availability of its new blue laser diodes in evaluation quantities. The NLHB500X-01 laser diode is offered at a unit price of $3000 for customers researching...
WaveSplitter Transmits 160 Channels
WaveSplitter Technologies Inc. of Fremont, Calif., demonstrated a 160-channel dense wavelength division multiplexing module in March at OFC in Anaheim, Calif. The 25-GHz demultiplexing module...
light speed
Coherent Acquires DeMaria
A $22.5 million cash deal brings DeMaria ElectroOptics Systems Inc. and its CO2 laser technology into the Coherent Inc. fold. Coherent officials said they expected the deal to close in April. The...
Corning Is Late for Its Own Party
CORNING, N.Y. – Corning Inc. is celebrating its 150th anniversary this year, but the party was over before it began, as dwindling equipment purchases at the carrier and systems levels this year...
Study: Money Isn’t Everything
Cash bonuses and stock options aren’t the best way to ensure that top talent comes along as part of a merger or acquisition, researchers at Wake Forest University in Winston-Salem, N.C.,...
US Funds ’Porky’ Photonics
WASHINGTON -- With an "oink, oink" here and an "oink, oink" there, Citizens Against Government Waste has vilified more than $200 million in government funding of photonics projects.The photonics...
Laser Project Awaits Funds
LIVERMORE, Calif. -- The National Ignition Facility has not yet received all of its 2001 budget because it has not updated Congress on its construction status and its budget plan, and has not...
Rapid Prototyping Firms Merge
Two companies that specialize in laser-based rapid prototyping technology have announced plans to merge this year. 3D Systems Corp. of Valencia, Calif., has agreed to buy all of the outstanding...
Remote Sensing Industry Growing
The commercial remote sensing market is approximately $2.2 billion and growing at 10 to 15 percent per year, according to a study by the American Society for Photogrammetry & Remote Sensing of...
Industrial Laser Shipments Up
Industrial laser manufacturers shipped 30 percent more devices and systems in 2000 than in 1999, according to year-end figures from the McLean, Va.-based Laser Systems Product Group of the...
Accent on Applications
CLEO/QELS 2001 Awards Ceremony
The CLEO/QELS Plenary Session and Awards Ceremony was held Wednesday morning. About 800 attendees crowded into the Convention Center's Ballroom to honor their colleagues who were receiving awards and...
Acrylic Windows Improve Scanning
The material quality of a barcode scanner’s window may seem to be a trivial detail to scanner users, but careless material selection by the manufacturer contributes to misreads, failures and...
Dye Improves Insulin Studies
Insulin therapy helps to control diabetes, but a better understanding of the disease could spare diabetics a lot of pain. Robert Kennedy bathed pancreatic beta cells in FluoZin-3, and continuously...
Gentle Handling for Unnecessary Roughness
Rogers Corp. develops high-performance specialty materials for telecommunications electronics. The company's primary application is laminating copper foil to various dielectric substrates to insulate...
Presstime Bulletin
Agilent Implements Cost-Cutting Measures
Facing the effects of a weak economy and the California energy crisis, Agilent Technologies Inc. of Palo Alto, Calif., has announced that it will cut the salaries of its 48,000 employees by 10 percent and will institute a hiring freeze. The company hopes that the measures, which will be in effect at least through July 31, will save $70 million per quarter. President and CEO Edward W. Barnholt...
Scientists Investigate Deep-Sea Wonders
The 279-foot research vessel Knorr from Woods Hole Oceanographic Institution of Woods Hole, Mass., returned to port on Mauritius after a monthlong expedition to the bottom of the Indian Ocean, laden...
High-Tech Diversity Still Lacking
Speaking in San Jose, Calif., at the Silicon Valley Digital Connections conference on diversity, the Rev. Jesse L. Jackson of Rainbow/Push Coalition of Chicago noted that the high-tech industry still...
NASA Inventions Honored
Two technologies developed by NASA's Marshall Space Flight Center in Huntsville, Ala., were inducted into the Space Technology Hall of Fame at the National Space Symposium in Colorado Springs, Colo.,...
Nikon Sets ’Small World’ Deadline
Nikon Instruments Inc. of Melville, N.Y., has announced June 29 as the deadline for entries to its 27th annual Nikon International Small World Competition. Interested parties may submit up to three...
Products
COMPACT SENSORS
The 7810 sensor series from Automatic Timing & Controls is available in through-beam, polarized-retroreflective and diffuse-reflective sensing modes. They measure 1.37 x 78 x 45 in. and have a...
Automatic Timing & Controls
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DIODE LASER MODULE
An ultralow-noise, 5-mW diode laser system with a circular collimated beam has been launched by Coherent Photonics Group, Auburn Div. The ULN series displays rms noise figures of 0.06% or less for...
Coherent Inc.
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EMISSIONS DETECTION
A VUV atomic emission end-point detector is available from McPherson Inc. The windowless discharge lamp uses helium as a carrier gas for a clean background that allows the introduction of secondary...
McPHERSON
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MACHINE VISION INSPECTION
Cognex Corp. has introduced a machine vision system for automatic detection and measurement of scratches, cracks and spots that form on fibers during polishing. Fiber-Inspect can be used in...
Cognex Corp.
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THERMOELECTRIC MODLES
A line of thermoelectric modules for the optoelectronics industry is available from Ferrotec America Corp. The miniature modules, produced in several sizes, are suitable for laser diodes and fiber...
Ferrotec (USA) Corp.
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PHOTODIODES
The G8198 series of InGaAs PIN photodiodes from Hamamatsu Corp. feature high-speed response at low reverse voltage, low noise, low dark current and low terminal capacitance. These features make them...
Hamamatsu Corporation
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FIBER OPTIC CLEANER
The IT-77 automatic midstripper for fiber optic coating removal and cleaning is available from Icent Technologies Inc. The system removes the protective polymer coating while maintaining the quality...
IB Laser Consulting Inc.
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FIBER OPTIC POWER METER
The pocket-size FPM-250 fiber optic power meter has been released by Terahertz Technologies Inc. It incorporates a 1-mm-diameter InGaAs detector that provides improved temperature stability at 1550...
Terahertz Technologies Inc.
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FIBER OPTIC LINE ARRAYS
The WebLite series of fiber optic line arrays from StockerYale Inc. delivers an intense line of uniform light suitable for high-speed line-scan applications. The arrays use high-output 0.66-NA glass...
ProPhotonix Ltd.
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POWER METER
Noah Industries Inc. offers a fiber optic power meter for test and measurement, and automated power monitoring applications. The Lab Boy is a Springboard-compatible plug-in module for the Handspring...
Noah Industries Inc.
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FIBER POWER METER
ILX Lightwave Corp. designed its fiber optic power meter for component manufacturing production test stations. The FPM-8210H measures up to 1 W of power and delivers low response to variations in...
Newport - ILX Lightwave, Photonics
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RAMAN AMPLIFICATION
A product line of passive components and optical modules for Raman amplifier systems, developed by Oplink Communications Inc., includes isolators, polarization-maintaining beam combiners, wavelength...
Molex, Optical Solutions
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MICROSCOPE CAMERA
The DC 200 digital microscope camera from Leica Microsystems Inc. provides near-real-time image previews with 9- and 17-fps black-and-white imaging. This speed allows users to focus and magnify...
Leica Microsystems Inc.
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CERAMIC ADHESIVE
A high-temperature adhesive for bonding and potting high-wattage quartz halogen lamps is available from Aremco Products Inc. Ceramabond 835M is an alumina-filled, water-based formulation that also...
Aremco Products Inc.
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EPOXY SYSTEM
Fiber Optic Center Inc. provides a two-part epoxy system that cures in 15 min at 100 °C or in 5 min at 150 °C. AngstromBond AB9119 has a working time of 2 h and changes from light yellow to dark red...
Fiber Optic Center Inc.
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LOW-NOISE AMPLIFIERS
Advanced Research Instruments Corp. has released two transimpedance/voltage amplifiers, both with 50 (omega) input/output impedance, for fast photodetector applications. The DC-100 model delivers a...
Advanced Research Instruments Corp.
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PULSE MODULATOR
PowerMod HVPM solid-state modulators from Diversified Technologies Inc. can be configured to deliver 3 to 30 mW of peak pulses at up to 30 kV and currents up to 1 kA. Features include <1-µs rise...
Diversified Technologies Inc.
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OPTOCOUPLER
Hero Electronics Ltd. has introduced a low-profile SMD optocoupler manufactured by Bedford Opto Technology. The OPI1000L is suitable for applications such as metering and instrumentation in hazardous...
APC Hero
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PULSE STRETCHER
The 101 PAL-PSTR pulse stretcher from Light Age Inc. provides control over a 0.1- to 5-µs range. It allows laser peak power to be fixed as pulse energy varies or to vary at nearly constant pulse...
Light Age Inc.
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TELEVISION MICROSCOPES
Opto Sonderbedarf GmbH is offering TV video zoom microscopes. These modular systems comprise a video macroscope/microscope, a stage with supporting arm for the camera, a CCD camera with a zoom...
Opto GmbH
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MINIATURE WAVEGUIDE AMPLIFIER
A compact erbium-doped waveguide amplifier (EDWA) gain block has been launched by Teem Photonics. The Metro EDWA includes a pump laser with a thermoelectric cooler, a pump/signal multiplexer, a...
Teem Photonics
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ENGRAVING, CUTTING
Universal Laser Systems Inc. has introduced a laser platform that employs two side-by-side CO2 laser beams for simultaneous multiline engraving or combined beam cutting. The system features the...
Universal Laser Systems Inc.
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GREEN LASERS
Diode-pumped solid-state lasers that emit at 532 nm have been released by Coherent Laser Div. The Compass 315M is offered with output powers of 20, 50, 100 and 150 mW, and the 415M is available in...
Coherent Inc.
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LASER LENS REPAIR
Laser Research Optics provides a laser lens-reconditioning service for polishing and recoating both surfaces of damaged lenses. The company says this service restores lenses to like-new condition for...
Laser Research Optics
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LASER POWER METER
Ophir Optronics Inc. has introuced a 100-W integrating-sphere power meter suitable for diode laser meaurements. The F100A-IS is based on thermal detector technology and is designed to interface with...
MKS Ophir, Light & Measurement
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LASER LIGHT SOURCE
The model 520 laser light source from Cercis Inc. is available in either single- or dual-source versions at wavelengths of 650, 780, 1310, 1550 and 1625 nm. It offers modulation frequencies of 270,...
Cercis Inc.
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PULSED VIOLET LASERS
TuiOptics GmbH has released a series of pulsed violet laser sources that offer a diffraction-limited pulsed laser beam for optimum focal spots. Features of the PVLS series include output-pulse rise...
Toptica Photonics AG
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MICROSCOPE EYEPIECE
Vision Engineering Inc. has developed an accessory to replace traditional eyepieces on binocular, stereo and research microscopes. Isis increases the distance between the user's eye and the...
Vision Engineering Inc.
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OPTICAL ISOLATOR
The polarization-maintaining pigtailed optical isolator from Edmund Industrial Optics allows light to travel through a fiber in a single direction. It is available in a one-fiber-connection version...
Edmund Optics Inc.
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CROSS-CONNECT SWITCH
AMS Technologies' Optotech Div. offers a nonblocking 100 x 100 optical cross-connect switch from NTT Advanced Technology Corp. The OMS-100 uses a fully automated system via a robot arm for low...
AMS Technologies AG
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INDUSTRIAL ALIGNMENT
The Microgage 1000 laser alignment system is available from Pinpoint Laser Systems. Applications include checking machine straightness, precision leveling, measuring machinery wear, monitoring rail...
Pinpoint Laser Systems
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SCAN HEAD
Scanlab AG has presented a 2-D scan head for fast beam deflection. The HS7 has a 7-mm clear aperture and marks more than 1000 characters per second when using the appropriate laser. This compact...
SCANLAB GmbH
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IR THERMOMETER
The OS540 infrared thermometer from Omega Engineering Inc. is suitable for noncontact temperature measurement applications such as diesel and fleet maintenance, in-process temperature measurement,...
Omega Engineering Inc.
LIGHT-RADIATION MONITORS
A radiometer system that monitors UV, laser, IR and VIS optical radiation, or combinations, is available from Solar Light Co. Its design incorporates the PMA 2100 radiometer/data logger, radiation...
Solar Light Co. LLC
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OPTICAL SAMPLING MODULES FOR 40-Gb/s NETWORKS
Two optical modules are available from Tektronix Inc. for use with its CSA8000 communications signal analyzer or TDS8000 digital sampling oscilloscope. The 80C05 and the 80C06 allow research and...
Tektronix Inc.
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LASER POWER MEASUREMENT
Labsphere's LPMS series of laser power measurement systems have applications in the measurement of laser and laser diode output and collimated light sources, as well as in optical bench detection....
Labsphere Inc.
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PULSE COUNTER
PerkinElmer Instruments offers a universal counter with a USB connection that works with laptops and PCs. The Sense-ations 3820 measures frequency, average period, duty cycle, pulse-high and -low...
PerkinElmer Instruments
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REFRACTOMETERS
Vee Gee Scientific Inc. offers the DR-M series of Abbe refractometers from Atago. These instruments offer high-level refractive index analysis of optical glass, polymers, resins, coatings, film and...
VEE GEE Scientific LLC
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SPECTRUM ANALYZER
The DWDM optical spectrum analyzer from Control Development Inc. is available either as a stand-alone unit or as a board-level product for OEMs. The 11.2 x 3.5 x 7.5-in. device, which uses InGaAs...
Control Development Inc.
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SPECTROMETER SYSTEM
Carl Zeiss Jena GmbH has released the CleanScan spectrometer system for sensitive online measurement of absorption in the UV range and for direct analysis of residue traces in cleaning solutions. The...
Carl Zeiss Microscopy LLC
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