Spectrum Detector, Inc. Introduces First Commercially Available TRAP Radiometers and Joulemeters.

Digital instruments set new standards in measurement uncertainty and provide a superior gold standard for in-house calibrations.

Spectrum Detector, Inc., a leading manufacturer of standard and custom detectors, electronics and instruments for measuring optical power and energy, today introduced the TRAP Series, a revolutionary series of digital radiometers and joulemeters that set new standards in measurement uncertainty: <1% on multiple points across the spectrum. The systems are based on "wedge" TRAP concepts pioneered at NIST Boulder - where the technology plays a critical role in NIST spectral calibration transfer standards. Equally unique is the TRAP Series' configuration - the entire system is contained within a single, compact, USB-powered probe housing. The user simply connects the probe to a PC via the USB port and begins measuring using powerful Labview software. The TRAP series is ideal for any ultra-precise measurement application, and provides a NIST-level gold standard for in-house calibrations.

The TRAP consists of a large-area black pyroelectric detector opposite a large-area broadband mirror in a 15° wedge configuration. The wedge configuration is designed so that 99% of the light passing through the 5 mm aperture is absorbed and measured. This means the spectral response from 0.25 to 15 µm is flat to 1% or better.

"The TRAP Series puts core NIST calibration technology directly on the user's optical bench," said Don Dooley, president of Spectrum Detector. "It's incredibly useful in the lab - perfect for the user that's serious about optical measurements and optical calibrations. In fact, it's literally like ready access to NIST standards in-house. For example, if a user gets varying results between optical power meters when measuring a single source, he can employ an SPT-DR-TRAP system as an absolute standard. This way, he can correlate his meters to the TRAP system and minimize the measurement uncertainty. These new TRAP instruments provide a convenient and timely solution to in-house optical calibration needs - and time is money."

The digital TRAP Series is available in radiometer or joulemeter configurations. The Model SPT-DR-TRAP is a radiometric model with measurement performance from 20 µW to 200 mW FS, with minimum resolution of 50 nW. The Model SPT-DJ-TRAP delivers joulemeter measurement performance from 2 µJ to 2 mJ, with minimum resolution of 100 nJ. Included with all systems is full featured, executable LabView applications software that provides single and dual-channel measurement capability, powerful automation routines and sophisticated data collection, statistics and graphic presentation.

Analog TRAP instrumentation is also available, optimized for use with oscilloscopes and lock-in amplifiers. Choose from a variety of radiometer and joulemeter configurations.

About Spectrum Detector.
Spectrum Detector, Inc., is a leading manufacturer of standard and custom detectors, electronics and instruments for measuring optical power and energy. The company offers a wide range of advanced solutions including LiTaO3 pyroelectric detectors, broadband pyroelectric radiometers, silicon and germanium radiometers, pyroelectric and silicon joulemeters, optical and thermal TRAP detectors and THz detectors and instruments. The company also excels at customer service, providing custom engineered detectors and instruments, turnkey optical test sets, NIST traceable calibration in watts and joules and responsive technical support. For more information, contact:
Bart Hengsdijk


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