Photonics/Optics

Laser Diode Module

Power Technology (Little Rock, AR) offers a violet laser diode module with 250mW of output power at 405nm. The module meets OEM analytical and general scientific laser application needs, including laser-induced fluorescence, microscopy, spectroscopy, lithography, data storage, flow cytometry, cancer detection, remote optical sensing, holography, and illumination.

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CW and Pulsed Laser Diode Driver

Analog Modules (Longwood, FL) has released its CW and pulsed laser diode driver, Model 784. The 50A, 2.5V driver requires +5VDC input power. Pulsewidths vary from 600ns to CW, with power capabilities up to 125W with adequate cooling. The 784 is manufactured as a RoHS-compliant assembly, but military versions are also available.

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Industrial Sensors

The FB series M18 plastic DC photoelectric sensors from AutomationDirect (Cumming, GA) are diffuse, polarized reflective and through-beam models. The 18mm devices have sensing distances ranging from 70mm to eight meters. All models feature M12 quick-disconnects and are available in NPN and PNP output logic configurations.

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Epoxy

The Polymer System EP37-3FLF from Master Bond (Hackensack, NJ) resists cryogenic temperatures and thermal cycling. The two-component epoxy, which features a low exotherm, functions as a potting, encapsulating, and casting system, especially where wider cross section thicknesses are specified. Serviceable over the range of 4K to 250°F, EP37-3FLF cures at room temperature in 2 to 3 days or faster at elevated temperatures. The product offers a non-critical 1-to-1 mix ratio by weight or volume, and a low mixed viscosity of 1,400 to 1,500 cps. Additionally, users can work with a 100 gram mass of the adhesive at room temperature for up to 90 minutes.

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Forensic Analytical Microscope

The CRAIC Elixir™ microscope from CRAIC Technologies (San Dimas, CA) offers multiple forensic analytical techniques. Forensic scientists can use the tool to conduct microspectroscopy, high-resolution imaging, Raman microspectroscopy, and glass refractometry. The microscope offers accurate and rapid analysis of trace evidence, including glass, paints, fibers, and documents.

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Vacuum UV Imaging Spectrometer

Vacuum spectrometers from McPherson (Chelmsford, MA) have a 670mm focal length. The spectrometers feature stainless steel housings and components for ultra-high-vacuum applications. The instruments readily achieve 10E-6 torr vacuum during operation with elastomer (Viton™ or Buna-N) seals. The McPherson models have master polished optics, multiple entrance and exit port locations, and high precision wavelength drives for wavelength reproducibility. Specialized high reflectivity coatings provide up to 78% reflective efficiency at wavelengths as short as 120 nm. The device has an f/4.7 aperture ratio (670mm f.l.). The tools are available in focal lengths of 0.67, 1.0, 1.3, and 2-meters.

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Source Measurement Unit

Keithley Instruments (Cleveland, OH) has announced the Model 2401 SourceMeter® instrument, which is optimized for high-precision test applications such as current vs. voltage (I-V) characterization of photovoltaic (solar) cells, high brightness LEDs (HBLEDs), low voltage materials, and semiconductor devices, as well as resistance measurements. The instrument provides source and measurement unit capabilities at 20V and 1A signal levels. In a single enclosure, the Model 2401 integrates a highly stable DC power source with an instrument-grade 51⁄2 or 61⁄2-digit multimeter.

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