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DPJ-25-OB Joulemeter Probes

Photonics.com
May 2009
Gentec-EO USA Inc.Request Info
 
LAKE OSWEGO, Ore., May 26, 2009 – Spectrum Detector Inc. has expanded its line of “delta” pyroelectric joulemeter probes with the introduction of the model DPJ-25-OB, which features an optical black absorbing coating for flat spectral response from 0.25 to 15 µm, and model DPJ-25-DC, which includes a diffuse metallic absorbing coating that eliminates specular reflectance.

SpectrumDetector_Joulemeter.jpgThe DPJ-25-OB can be used for pulsed sources running at up to 400 pps; the DPJ-25-DC enables pulsed measurements at repetition rates in excess of 40,000 pps. Both probes are directly compatible with the company’s delta-DPM USB-based digital power module that includes LabView applications software.

The large-area 25-mm-diameter smart probes include a fast integrating circuit, a thermistor for active temperature compensation, a shielded cable terminated with a snap-on connector, and an erasable programmable read-only memory, where the calibration and wavelength correction factors are stored. They are designed for use with the company’s delta-APM analog power module to achieve the maximum usable pulse repetition rate of 40 kHz or with its delta-DPM USB digital module to create a single- or dual-channel plug-and-play digital energy meter. They can measure from 2 µm to 200 mJ, from 1 to 40 kHz, and from the deep-UV to the far-IR.

For both models, maximum energy density is 50 mJ/cm2, energy nonlinearity is <1%, calibration uncertainty is <2.5%, and maximum average power is 15 W.

For more information, visit: www.spectrumdetector.com  

Spectrum Detector Inc.
5825 Jean Road Center
Lake Oswego, OR 97035
Phone: (503) 697-1870
Fax: (503) 697-0633


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GLOSSARY
photonics
The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
thermistor
A solid-state semiconducting structure (basically one of the bolometers) that changes electrical resistance with temperature. Materially, some kind of ceramic composition is used. A thermistor has much higher electrical resistance than metallic bolometers and hence requires much higher voltages to become useful.
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