Latest Test and Measurement News

IR Spectroradiometer for SWIR Range

18 May 2022 – Instrument Systems presented its latest spectroradiometer CAS 140D IR for measurements in the SWIR (short-wave infrared) wavelength range. It offers the proven high measurement accuracy and reliability of the CAS140D series - internationally recognized as a reference - for wavelengths of 780–1700 nm. Compared to its predecessor, the CAS 140D IR has a significantly better performance in signal sensitivity, stray light suppression and electronics.

Thanks to a new design of the optical architecture, throughput has been increased by up to 70%. The stray light proportion has again been significantly reduced. In addition, the CAS 140D IR contains a new electronic platform that enables faster processing of measurements: the minimum possible integration time has been reduced from 10 ms to 4 ms, the total scanning time for a measurement from 16 ms to 10 ms. The advantages for the user lie in higher productivity due to shorter measuring times, accompanied by greater precision and repeatability. As a supplement to the broadband model (780–1700 nm) high-resolution devices are available specially for the measurement of narrow-band laser diodes such as VCSEL: e.g. 1300–1440 nm with a spectral resolution of 0.75 nm.

Like all Instrument Systems spectrometers, the infrared models feature calibration traceable to PTB or NIST. With a trigger box, various different CAS models can be combined to a MultiCAS system and complex spectral measurements run parallel over an extremely wide wavelength range. In the right combination with 2D imaging colorimeters, IR cameras, integrating spheres or goniometer systems they precisely and reliably perform individual customer tasks for wavelength ranges from UV to IR.

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