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Photonics Spectra - November 1998
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Issue Library
Features
Evidence Analysis:
For years, forensic scientists relied on chemical tests and microscopes to examine evidence gathered at crime scenes. Such techniques often provided inconclusive results or resulted in the destruction or contamination of evidence. By the mid 80s, crime labs throughout the US and abroad began embracing more sophisticated technology, including UV and Fourier transform infrared (FTIR) spectroscopy....
Seeing the Unseen:
A teenage boy who had been working inside a garage heard his dog barking and the sounds of a car door slamming outside. The boy left the garage and noticed an orange Datsun station wagon parked...
Information Processing:
The days when police officers snapped instant Polaroid photos in domestic abuse cases or spent hours thumbing through fingerprint cards soon may be over. That's because an increasing number of law...
Nd:YAG Lasers:
The Nd:YAG laser crystal was developed in the 1960s, not long after the discovery of the ruby laser. Its combination of high gain, narrow linewidth, low threshold and physical properties makes it a...
Liquid Mirrors Offer a High Quality, Low Cost Alternative to Glass
Scientists have long known that if you spin a liquid, its surface takes the shape of a paraboloid, a great shape for a mirror. Although well known, the concept was never taken seriously because early...
Solving the Signal Recovery Problem:
Signal recovery presents potential problems for most researchers and engineers at one stage or another in an experiment. Most often, the problem is either a very weak signal, or a very low signal to...
The Applications Laboratory:
Explained simply, the application laboratory occupies the space between the esoteric staff in research and the pragmatic folks in sales. The applications engineer has a foot in both worlds, often...
Tech Pulse
Researchers Report Occurrence of Mesospheric Bores
An undular bore is an atmospheric phenomenon characterized by waves traveling in a fixed pattern behind a wave- front. Usually, this phenomenon occurs in the troposphere -- the lowest part of the...
Photoassociation Makes Cold Cs2 Molecules
Physicists at the Centre National de la Recherche Scientifique south of Paris have taken Bose-Einstein condensate research another step forward by using a new method of associating pairs of supercold...
Liquid-Filled Camera Sees Like an Eyeball
When it comes to discriminating between various shades of black and white -- even picking out a dark figure lurking in the shadows -- the eyeball does a very nice job. Cameras, on the other hand, are...
Method Measures Micron-Scale Fluid Flows
Developers have made significant progress over the years with miniaturization, including microfluidic devices. But measuring the fluid flow within those devices -- with passages of 1 to 100 µm...
Bandgap Device Brings Galaxies into Sharper Focus
A group of Iowa State University researchers has successfully demonstrated a photonic bandgap filter that can operate in the far-IR region of the spectrum. According to Gary Tuttle, who is an...
Fibers Measure Frogs' Eyes
Researchers at two Tulsa universities have designed a fiber optic probe to measure distances inside a frog's eyeball, an early step in artificial vision research. Peter LoPresti, an electrical...
Far-UV Satellite to Explore Galaxy Origins
The first large-scale space mission to be fully planned and operated by a university's academic department has taken some final steps toward its planned February 1999 launch. The Far Ultraviolet...
Observations Support Homochirality Theory
Astronomers at the Anglo-Australian Observatory in New South Wales have developed new theories on optically active molecules based on some age-old research of Louis Pasteur and new observations of...
Infrared Sensor Counts Insects
If there's one thing that bugs the agriculture industry, it's bugs. Insecticides are effective in debugging stored products such as grains, fruits and vegetables, but health and environmental...
Lidar System to Find Oil and Gas Fields
A hydrocarbon differential absorption lidar system is expected to help Laser Exploration Inc. in Midland, Texas, to find stratigraphically trapped oil and gas fields. Ophir Corp. in Littleton, Colo.,...
Light Source Enables UV Lithography
As circuit features shrink and optical lithography approaches its technical limits, the world's semiconductor industry continues to evaluate its options for the chip-making method of the future....
Researchers Glimpse Artificial Molecules in Action
Research efforts between the University of Munich and the University of Delaware have resulted in a technique that excites artificial molecules in a manner resembling the way light excites real...
Space Mirror to Light up the North
In February, night may become more like day in some cities across the Northern Hemisphere, as cosmonauts aboard the space station Mir deploy a giant, 25-m reflector and direct its light Earthward....
Photonic Crystal Shrinks Prism Size
NEC Corp. in New York City, working with To-hoku University and NTT Optoelectronics Laboratories of Japan, has created a three-dimensional photonic crystal with a "super prism" effect. It offers...
Researchers Edge Toward Pump-Free Dye Laser
Electrochemiluminescence has been studied since the 1970s as a way to excite dye molecules, but the pumping rate has remained far too low for laser action. Now researchers at NTT Basic Research...
UK College Receives Space Simulator
To calibrate a satellite device that will be used for detecting infrared emissions and solar radiation from space, a team of researchers from Imperial College in London has received a space simulator...
System Validates Soap-Film Study of 2-D Turbulence
Studying the flow of soap film has been thought to be a convenient way to study 2-D turbulence in a search for answers to geophysical systems. But research with such models has been inconclusive,...
Integrating Sphere Tests Efficiency
As building developers struggle to incorporate energy conservation into their designs, controlling heat and light fluxes through windows is crucial. As the "intelligent window" becomes more complex,...
Subaru Telescope Gets 27-ft Mirror
A team of opticians has completed a one-piece, 27-ft-diameter mirror that soon will be incorporated into the Subaru Telescope, which is under construction at the summit of Mauna Kea in Hawaii. Led by...
Material Enables Energy-Efficient Window
Researchers at the University of California and Lawrence Berkeley National Laboratory have discovered an inexpensive material that could lead to highly efficient windows for automobiles and...
light speed
Cognex Acquires Allen-Bradley
Machine vision manufacturer Cognex Corp. has signed an agreement with Rockwell Automation to acquire certain technologies and assets from the machine vision business of Rockwell subsidiary Allen-Bradley Co. Terms of the deal also give Cognex, which is based in Natick, Mass., access to Rockwell Automation's customers. Robert J. Shillman, president, CEO and chairman of Cognex, said that the...
Cymer Braces for Downturn
Cymer Inc. has announced global work-force cuts of 12 percent as it restructures to offset the slump in the semiconductor industry. Most of the layoffs will occur in the company headquarters in San...
Melles Griot Buys HeCd Laser Maker Liconix
Eager to boost its market share of low-noise, high-power helium-cadmium lasers, Melles Griot has purchased Liconix of Santa Clara, Calif. With the acquisition, Melles Griot will consolidate its hold...
Kidger Optics Sells Sigma Software Line
Kidger Optics has sold its Sigma optical software product line to Focus Software Inc. in Tucson, Ariz. According to Focus Software President Ken Moore, Kidger Optics has sold the copyright, source...
New York State Forms Photonics Industry Association
Home to nearly 350 photonics companies, New York state now boasts an association all its own: the Photonics Industry Association of New York. Bud Hippisley, secretary and executive director of the...
US, UK Judges Uphold Corning Patents
Corning Inc. has arrived at a settlement with Plasma Optical Fibre B.V. of Eindhoven, The Netherlands, and two affiliates, Yangtze Optical Fibre and Cable Co. Ltd. of Wuhan, China, and Chromatic...
The Best-Laid Plans Need Effective Communication
Actions speak louder than words, or so the saying goes. A recent study by researchers in Rensselaer Polytechnic Institute's Lally School of Management and Technology and DePaul University's...
New School of Optics Opens
The University of Central Florida in Orlando will open a graduate school of optics, making it one of three universities in the US to offer graduate education in this field. M.J. Soileau will direct...
Semiconductor Slump Forces More Cuts
Robotic Vision Systems Inc. has cut 140 jobs from its payroll. Pat V. Costa, chairman, CEO and president of the machine vision company in Canton, Mass., said the 16 percent reduction in work force...
Stock Options Make Good Sense
The photonics industry is full of start-up companies and new ventures -- fledgling enterprises in a position to get all the advantages from offering stock options to spur employee performance. So...
Varian Associates Votes to Reorganize
Varian Associates Inc. is reorganizing into three separate companies. The Palo Alto, Calif.-based manufacturer has units in analytical and research instruments, semiconductor equipment and health...
Accent on Applications
Camera Detects Faulty Cells
Professor Hal Krider combines microscopy with image analysis in his search for an early- detection test for lyme disease and other research he performs in developmental genetics at the University of...
Compact Laser Chiller Gets the Heat Out
Advances in diode pumping have led to smaller laser heads and smaller power supplies, meeting the growing demands for more compact, portable lasers. As a rule, diode-pumped devices are more efficient...
Chip Enables Fast, High-Resolution Imaging
Early generations of digital still camera technology generally relied on an arrangement of generic microprocessors to perform the various functions of capturing and processing information from the...
Adhesive Provides Optical Clarity
Mindrum Precision Inc. machines its clear and colored filter multioptical lenses to tight 0.00001-in. tolerances and bonds these lenses together in flow cells that become integrated into lasers,...
Presstime Bulletin
Advanced Technology Program Announces Awards
The Advanced Technology Program conducted by the National Institute of Standards and Technology provides cost-shared funding to industry for high-risk R&D projects. This year, many of the 79 projects chosen to receive a share of the $236 million relate to the development of photonics technology. They include: Sensors that detect ice on an aircraft employ indium phosphide wafers from Sensors...
OSA, SPIE Move Ahead with Merger Talks
After about half a year of monthly meetings, a joint task force has presented its report to the boards of the Optical Society of America and SPIE regarding a possible merger. The report's 12...
Manufacturers of Scanning Probe Microscopes Merge
ThermoSpectra Corp. of Franklin, Mass., has acquired TopoMetrix Corp. of Santa Clara, Calif., for $8 million. ThermoSpectra's subsidiary, Park Scientific Instruments Inc. of Sunnyvale, Calif., will...
Products
NIR IMAGE DETECTION
Hamamatsu Corp. has developed two multichannel detector heads that can be combined with InGaAs linear image sensors for complete image detection capability for NIR spectroscopy, radiation...
Hamamatsu Corporation
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FIBER COLLIMATORS
Fiber collimating lenses and pigtailed assemblies are available from LightPath Technologies Inc. The collimator products exhibit low insertion and return loss and come in compact packages at...
LightPath Technologies Inc.
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FIBER OPTIC SENSORS
Banner Engineering Corp. has unveiled its D11 and D11Expert sensors. They feature a visible red, green or blue LED light source for maximum sensitivity to all colors. Suitable for product sensing and...
Banner Engineering Corp.
DIGITAL CAMERA INTERFACE
Spectral Instruments Inc. is offering a PCI card that conforms to the Automated Imaging Association standard for differential output digital cameras. An onboard DMA bus master control and high-speed...
Spectral Instruments Inc.
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FRAME GRABBER
Sensoray Co. Inc. has unveiled the model 311 PC/104+ frame grabber, which converts video camera signals into digital data for image processing and display. The device can accommodate up to three...
Sensoray Co. Inc.
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INDUSTRIAL 1-MEGAPIXEL-RESOLUTION CAMERAS
The VC series of industrial smart cameras from Vision Components now has a megapixel model that features 1280 x 1024 pixels, enabling the detection and classification of smaller defects, more...
Vision Components GmbH
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MINI MACHINE VISION
Omron Electronics Inc. has introduced the F30, a miniature machine vision system suitable for basic inspection applications including presence/absence, orientation, parts sorting and foreign-matter...
Omron Automation
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IMAGING SUBSYSTEM
Alacron is offering an autonomous imaging subsystem for PCI bus systems. The FG-A-PCI combines a color frame grabber with an accelerated display controller on a single card, allowing images to be...
Alacron Inc.
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VIDEO FRAME GRABBER
The Meteor-II multichannel PCI frame grabber from Matrox Imaging is designed for digitizing video from such devices as progressive-scan and analog frame-scan cameras. Up to three channels of video...
Matrox Imaging
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OPTICAL CALIBRATION
Exfo Electro Optical Engineering Inc. has introduced the CS-200 optical calibration system to solve problems associated with periodic instrument verification. Designed to save manufacturers time and...
EXFO Inc.
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FIELDSPEC SOFTWARE
Analytical Spectral Devices Inc. has introduced RS2 software for use with its FieldSpec FR remote sensing spectroradiometer. Designed to eliminate postprocessing time for FieldSpec users, the...
ASD Inc.
MICROLITER SAMPLING
A sampling device that allows spectrophotometric measurements directly in a pipette is available from Ocean Optics. The SpectroPipetter couples to the company's fiber optic spectrometers and compact...
Ocean Optics - Part of Ocean Insight
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MICROSCOPY SOFTWARE
Carl Zeiss Jena GmbH has developed the AxioVision 1 modular image acquisition and archiving system for digital microscopy. It is suitable for applications where images will be generated, documented...
Carl Zeiss Microscopy LLC
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POWER SUPPLY
Analog Modules Inc.'s model 5753 capacitor-charging power supply repeatedly charges energy storage capacitors for pulsed, solid-state laser applications. The 3-kW device measures 6.3 x 6.3 x 11.3 in....
Analog Modules Inc.
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COMPACT LASER DIODES
The Flexpoint laser diode module series from Laser Components GmbH has a wide range of housing types to suit applications where space is restricted. The smallest version is 20 mm long x 10 mm in...
Laser Components Germany GmbH
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LASER DIODE CONTROLLER
ILX Lightwave Corp. has added the LDC-3916 to its family of laser diode controllers. This multichannel controller supports both 16- and 8-channel configuration modules and features a high-speed,...
Newport - ILX Lightwave, Photonics
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DEEP-UV LASER
An all-solid-state deep-UV laser that produces sub-20-fm bandwidths at 193 and 248 nm and tunes to other wavelengths is available from Light Age Inc. The company says it provides single longitudinal...
Light Age Inc.
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DIODE LASER DRIVER
A 65-A, 10-V diode laser power supply is available from Opto Power Corp. Designated the OPC-PS6510, the transient-protected device is designed for use with the company's high-power laser diode...
Opto GmbH
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LASER ENCLOSURES
Velmex Inc. has created custom laser enclosures using the MiniTec aluminum framing system. A T-slot profile system, the MiniTec features the PowerLock connector for assembly without access holes as...
Velmex Inc.
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LASER MICROGAUGE
The Microgage Machinery Alignment Kit from Pinpoint Laser Systems is a measuring system for machine shops and industrial environments. Its many applications include measuring shaft deflection,...
Pinpoint Laser Systems
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6-W GREEN LASER
Cutting Edge Optronics Inc. has unveiled a 6-W, near-diffraction-limited green laser. The Stiletto provides 532-nm output at 10 kHz by frequency doubling with an M2 <3. It provides high-peak-power...
Cutting Edge Optronics
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Q-SWITCHED LASERS
Coherent Inc., Laser Group, has developed the Compass QM series of Q-switched, diode-pumped lasers. Designed for ease of integration, the lasers feature an ultracompact footprint and an air-cooled...
Coherent Inc.
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UV LAMP
Spectronics Corp. has improved the Spectroline BIB-150P UV lamp. It is suitable for nondestructive testing, quality control, leak detection, UV curing and other industrial applications. The handheld...
Spectronics Corp., Spectroline
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ASPHERIC LENSES
Docter Optics Inc. introduces a high-performance line of off-the-shelf precision-molded B 270 glass aspheric lenses. They are designed to collimate or focus laser diode light as a single element and...
Docter Optics Inc.
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ANTIREFLECTION-COATED BALL LENSES
Deposition Sciences Inc. has introduced IsoSphere, a series of full-sphere lenses available in BK 7 glass, LaSF N9, LaSF 18A, spinel, sapphire and stabilized cubic zirconia substrates. Designed for...
Deposition Sciences Inc. (DSI)
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LENS ASSEMBLIES
Andrews Glass Co. is offering custom lens assemblies and components for photomultipliers and cameras that feature glass-to-Kovar sealing. Lenses for these assemblies are ground and polished to...
Andrews Glass Co. Inc.
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UV LENS
Electrophysics Corp. has extended its range of C-mount objective lenses to include a 25-mm UV lens that allows viewing from below 200 nm to over 2 µm with transmission better than 80%. The LQ25F28...
Lynred USA
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MODULAR STAGES
New Focus Inc.'s Triple-Divide modular translation stages can be reconfigured to suit a particular application with the twist of a single screw. The interlocking track design, called the e*z*Trac,...
Newport - New Focus
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MEASURING, AUTOMATION
National Instruments has announced that its software and hardware products for measurement and automation applications are compatible with Windows 98. The company's software products, including...
National Instruments Corp.
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CENTRATION TOOL
Trioptics GmbH has integrated an automatic centering and cementing station with its OptiAngle system for measuring optical centration errors. Centering and cementing of optics, either in transmission...
TRIOPTICS GmbH
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DIGITAL SCOPE WITH HIGH-SPEED PROCESSOR
LeCroy has unveiled a high-performance color digital oscilloscope with 4 MB of data acquisition memory per channel and the ability to cascade the memory to 16 MB when using single input. Designated...
Teledyne LeCroy
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SPECTROSCOPY TOOLS
The EPP2000 miniature fiber optic spectrometers from StellarNet Inc. cover the 200- to 1600-nm range. Features include a 2048-wavelength scan memory, 4-ms spectral data acquisition from a CCD...
StellarNet Inc.
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