Goniometric radiometer

The model LD 8900 goniometric radiometer is an angular scanning optical profiler that measures the intensity distribution of widely divergent optical sources to angles as large as 144°. It has a dynamic range >36 dB and measures mode field diameter with an accuracy of ±5% for a nominal 10-µm single-mode fiber. It is available with either a silicon or an InGaAs detector.
Photon Inc., San Jose, CA