Sphere Detectors Optimise Measurement of Light

Newport has enhanced its calibrated integrating sphere detectors, which are designed to measure the output light power of high-power light sources. These spheres optimise the measurement geometry for laser beams and other light sources, whether collimated or divergent. The new series includes the Model 819C (collimated) and Model 819D (divergent) instruments. Both are claimed to deliver excellent NIST-traceable calibration uncertainties of less than three per cent for most measurement ranges specified.

The calibrated integrating sphere models with a silicon detector operate from 400Nm to 1,100Nm, while those with an indium gallium arsenide (InGaAs) detector cover the spectral range from approximately 800Nm to 1,650Nm. To accommodate various power-range requirements, the calibrated integrating spheres are available in 2in, 3.3in and 5.3in diameters. The new design includes a robust port frame, as well as a variety of attachments and accessories to provide greater configuration flexibility.

Spheres of all sizes include an SMA fibre-optic connector on the north pole as a standard feature, allowing a small amount of light pick-off for wavelength measurement or any further analysis, without affecting the overall system calibration.

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