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Photonics Spectra - July 2002
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Issue Library
Features
Eliminating Vibration in the Nano-World
Until recently, photonics engineers, among others, had been powerless against settling-time bottlenecks in industrial processes that require submicron-scale precision. Their only effective ways to address fixturing and structural resonance excited by process motion had been either to slow down processes by using less aggressive motion profiles or to insert dwell times to allow mechanical damping...
Steward Observatory Spins Out Major Mirrors
Tucson, at first, seems a remote spot for the world’s foremost optical sciences laboratory. Arising from the parched red crust of the Arizona landscape, manicured lawns and English gardens...
Lateral-Scanning Interferometry Takes the Long View
Semiconductor, data storage, optical telecommunications and microelectromechanical systems (MEMS) applications often require surface measurement across relatively large areas with nanometer...
F2 Lasers Aren’t Just for Lithography
Compared with other excimers, F2 lasers emitting at 157 nm have few commercial applications. In fact, were it not for microlithography, it’s possible that these excimers would remain laboratory...
Tactical Airborne Reconnaissance Goes Dual-Band and Beyond
The military action following the events of Sept. 11 has put intelligence, surveillance and reconnaissance in the spotlight. It has highlighted the need to persistently monitor a battlefield to...
Tech Pulse
Vulcan to Produce Petawatt Pulses
The Nd:glass Vulcan laser at Rutherford Appleton Laboratory near Oxford, UK, was scheduled to produce its first petawatt-level laser pulse by June 30. At full operation, the near-IR laser is expected...
TV/CCD Combination Measures Wavefronts
Using a television monitor and a CCD camera, researchers at the Universidad Complutense de Madrid in Spain have developed a simple, flexible and low-cost method of analyzing the wavefront properties...
Optical Trapping Expands to 3-D
Since the mid-80s, optical tweezers have helped study the physics behind a myriad of microscopic phenomena ranging from DNA elasticity to micromachines. However, the effectively planar nature of the...
Shake-and-Bake Technique Builds Displays
Researchers at the University of Minnesota in Minneapolis and at Harvard University in Cambridge, Mass., have developed a self-assembly technique that may enable the manufacture of novel displays....
Filter Proposed for Quantum Network
Researchers at Hokkaido University in Sapporo, Japan, have developed a scheme for an optical filter involving linear optics and single-photon counters that would transmit photon pairs only if they...
Is There a Perfect Lens?
According to researchers at the University of Texas at Austin and at Consejo Superior de Investigaciones Cientificas in Madrid, Spain, the reports of the death of the diffraction limit may have been...
MIT Develops Flexible Dielectric Fibers
Fashion and photonics may seem an unlikely combination to inspire a product from the laboratories of Massachusetts Institute of Technology in Cambridge. However, blending the low-cost, high-volume...
'Lasetron' Promises Ultrafast Pulses, Strong Magnetic Fields
Laser light could help scientists observe the mysterious strong-force reactions responsible for holding the nucleus of an atom together, but these occur on the timescale of about 10-21 to 10-22 s --...
Deposition Controls Refractive Index
Japanese researchers at Osaka University in Suita and the Institute for Laser Technology in Osaka have demonstrated that atomic layer deposition can be used to manipulate the refractive index of an...
Holey Fiber Laser Produces 10 mW
A research team at Max Born Institut für Nichtlineare Optik und Kurzzeitspektroskopie in Berlin has demonstrated laser action from a neodymium-doped holey fiber that it believes may find applications...
Liquid Polymer Provides Gain for Optical Amplifier
At St. Andrews University in the UK, research-ers have constructed a broadband optical amplifier using a dilute solution of the conjugated polymer OC1C10-PPV as a gain medium. They expect that the...
Semiconductor Laser Emits 67-µm Radiation
A quantum-cascade laser developed by researchers in Italy and the UK may herald the shape of things to come. The device, which emits 4.4-THz radiation, demonstrates that semiconductor laser...
Lawrence Livermore Builds 28-km Air-Optic Link
Scientists at Lawrence Livermore National Laboratory in Livermore, Calif., have successfully established a 28-km-long air-optics link between the laboratory and nearby Mount Diablo. One of the...
IR Two-Photon Process Creates Acids
Two-photon absorption techniques show promise for such applications as microfabrication. But although researchers have examined ultraviolet-sensitive photoacid generators for use in two-photon...
light speed
What's Sapping Foreign Investment in Israel?
In the fall of 2000, Israel's technology sector was about to change course -- in two respects. Second only to the US in the number of high-tech start-ups, the country was on its way to drawing a record $11 billion in foreign investment, which generally has provided most of Israel's venture capital. The financial momentum drove scientific and business collaborations with foreign firms and fueled a...
Accent on Applications
Photonics Keeps Trains on Track
Traffic controllers for the national railway system have a problem. They have to move some 550,000 freight and passenger cars along 173,000 miles of track, frequently without knowing the precise...
Lasers Help Detect Mines
There are more than 100 million land mines worldwide and, for every 15 of them, someone is maimed or loses a limb. A team at the US Army CECOM Night Vision and Sensors Directorate in Alexandria,...
Lighting-Sensitive Displays Re-Create Setting
Because computer displays cannot respond to a wide spectrum of lighting conditions, their images tend to be flat and unrelated to their surroundings. Researchers have countered this with an...
IR Imaging Is Key to Biometric ID
Biometrics uses data processing to identify an individual by a unique biological characteristic; e.g., by a digitized fingerprint or iris pattern. It provides important tools for preventing or...
Presstime Bulletin
Relativity Tested to New Precision
Universität Konstanz and Heinrich Heine Universität Düsseldorf, both in Germany, a group has tested the predictions of relativity with a high-tech update of the Michelson-Morley experiment using two crossed cryogenic optical resonators injected with stabilized Nd:YAG lasers, yielding higher accuracy than previous experiments. The researchers reported their results at the 2002 Conference on Lasers...
Atomic Gas Acts as Optical Switch
Physicists at the University of Arkansas in Fayetteville have created an all-optical switch using electromagnetically induced transparency in an optical ring cavity. The technique, which they...
Quantum Cascade Cavities Comparable
Researchers at Technische Universität Wien in Austria report in the June 3 issue of Applied Physics Letters the relative performance of GaAs/AlGaAs quantum cascade lasers fabricated with Fabry-Perot,...
Mid-IR Quantum Cascade Laser Produces 3.5 W
A team of researchers at Northwestern University in Evanston, Ill., has demonstrated an InP-based quantum cascade laser that produces up to 3.5 W of 9.03-µm radiation at room temperature. The...
Chromium Atoms on Demand
Scientists from the National Institute of Standards and Technology (NIST) in Gaithersburg, Md., have found a way to supply single chromium atoms on demand. Besides facilitating efforts to find a way...
Products
POWER SUPPLY
Emco High Voltage Corp. has introduced a 3.25 x 4.0 x 1.10-in. power supply module that delivers as much as 10,000 V at 15 W. The H101P mounts directly to a PC board and is programmable via a 0- to 5-V DAC-compatible remote programming voltage. It includes a quasi-sine-wave oscillator and internal transformer shielding. The device is housed in a five-sided metal enclosure to reduce EMI/RFI...
XP Power
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InGaAs PIN PHOTODIODES
Hamamatsu Corp. has announced the G8941 series of InGaAs PIN photodiodes for laser diode monitoring. They provide a spectral response range of 0.9 to 1.7 µm for the 1.31- and 1.55-µm bands, typical...
Hamamatsu Corporation
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INTERFEROMETER
The ZX-1 Array Plus zoom interferometer from Direct Optical Research Co. (DORC) is designed to measure the end-face geometry of single-ferrule, multifiber connectors, including MT, Mini-MT, MT-RJ,...
Direct Optical Research Co.
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FLUORESCENCE DETECTOR
The FL-750 HPLC Plus fluorescence detector can quantitatively measure toxic compounds such as carbamates, glysophates and hydrocarbons to <1 ppb. This device from McPherson Inc. detects...
McPHERSON
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FO LASER ENCODER
The RLE10 fiber optic laser encoder from Renishaw Inc. is an interferometer-based system that provides multiaxis capability from a single remote laser source. This laser encoder uses fiber optic...
Renishaw Inc.
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ELECTRONIC SHUTTER
The Uniblitz CS45 shutter from Vincent Associates has a 45-mm aperture that fits into a 4-in.-diameter housing. The small-form-factor shutter also is available in an unhoused OEM version and is...
Vincent Associates
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DIGITAL CMOS CAMERA
NAC Image Technology's Hi-Dcam II digital video camera system has a CMOS sensor that provides images with up to 1280 x 1024 pixels in color or monochrome at 500 pictures per second. Capable of...
nac Americas Inc.
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COLOR CAMERA
A five-megapixel color camera that provides 10-bit digital output is available from SVS-Vistek GmbH. The SVS282 has a 2/3-in. CCD with 2590 x 1944 pixels and a Bayer pattern mosaic filter. It...
SVS-Vistek GmbH
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COMPACT CMOS CAMERA
Dalsa has released a "stop action" CMOS camera with electronic shuttering. The Dalstar 1M28-SA uses a 1-megapixel image sensor that provides 27 fps at full resolution. It features Linlog technology...
Teledyne DALSA, Machine Vision OEM Components
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VIDEO CAMERA
A digital monochrome progressive-scan video camera that measures 44 x 44 x 53 mm has been launched by Toshiba America Information Systems Inc. The IK-SX1 contains a megapixel 2/3-in. CCD with 6.45-µm...
CANON MEDICAL COMPONENTS U.S.A., Video Sensing Devices
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TEMPERATURE CONTROL
Wavelength Electronics' WTC3243 temperature controller, suitable for use with thermoelectric devices and resistive heaters, delivers an output current of ±2 A from a +5-V supply. It measures 1.30 x...
Wavelength Electronics Inc.
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RECIRCULATING CHILLERS
Lytron Inc. has announced the third generation of Kodiak recirculating chillers. The chillers incorporate an improved condenser unit and a side-panel louver design to increase airflow, and they...
Boyd Corp.
COMPONENT ASSEMBLY
Adept Technology Inc. has introduced an epoxy bonding system for the alignment, bonding and in-line testing of active and passive component assemblies, including fiber collimators, filters, couplers...
Adept Technology Inc.
TUNABLE Ti:SAPPHIRE LASER
The Chameleon tunable Ti:sapphire laser provides an average power of >1 W and femtosecond pulse tuning from 720 to 930 nm. This hands-free laser from Coherent Inc. operates via a menu-driven...
Coherent Inc.
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FREQUENCY LOCKING
A digital frequency-locking system that enables integration of wavelength lockers with frequency-tuning devices has been unveiled by Exfo Electro-Optical Engineering Inc. The DFL-5720 automatically...
EXFO Inc.
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DIFFRACTION GRATINGS
StockerYale Inc. offers a line of diffraction gratings for use in multiplexers, demultiplexers, optical spectrum analyzers and tunable lasers. The company says the gratings provide low stray light,...
ProPhotonix Ltd.
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OPTICAL TEST SYSTEM
The OTS9600 series optical test modules are designed for physical layer testing of passive optical components, including splitters, couplers, fiber Bragg gratings and arrayed waveguide gratings....
Tektronix Inc.
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MULTISENSOR METROLOGY
The SmartScope Quest 250 from Optical Gaging Products Inc. is a multisensor measurement system with TeleStar optics that promise a high-contrast image with virtually no distortion. This benchtop...
OGP (Optical Gaging Products)
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ANALYTICAL SPECTROMETER
A CCD-ICP analyzer designed for laboratories that do not require extended VUV performance is available from Spectro Analytical Instruments Inc. The Ciros M, which has no moving parts, performs...
Spectro Analytical Instruments Inc.
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ANALYTICAL SPECTROMETER
The DigiRad laser laboratory measurement system from Terahertz Technologies Inc. incorporates the company's R-752 universal radiometer. The device provides pulsed power measurement from 10 pJ to 1 J...
Terahertz Technologies Inc.
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IR SPECTROMETERS
The Tensor series FTIR spectrometers are designed for use in analytical laboratories and for R&D applications. Manufacturer Bruker Optics Inc. says the spectrometers' interface is intuitive and...
Bruker Optics Inc.
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AUTOMATED INSPECTION
Automated inspection machines designed for use with a variety of nonfixtured parts have been released by Cincinnati Automation Ltd. The complete turnkey systems include one of the company's EZVision...
Cincinnati Automation
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OPTOMECHANICAL ANALYSIS
Lambda Research Corp. has launched version 3.0 of its TracePro software for illumination and optomechanical analysis. All editions feature a rendering interface that uses the Hoops programming tool...
Lambda Research Corp.
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