For the intensity stabilization of lasers and other light-sources the Optical Intensity Stabilizationcan be used. The OIS is a tiny box containing an optical detector (PIN-photodiode and amplifier) a PID-controller, a stable reference value and a 50 Ohm driver unit. The versatile OIS-box can be mounted directly onto an optical table with an M4 thread. The large area (7 mm2) photodiode is mounted in the center of a 30 mm cage plate (SM1, CP02/M from Thorlabs) and has a bandwidth of 500 kHz. It is suitable for wavelengths in a range from 400 nm to 1'100 nm.
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