Noise Eaters

Devices for reducing the Intensity Noise of an optical beam by automatically adjusting the degree of power attenuation.

The principle of operation is that the Optical Power is reduced with an electrically controllable attenuator, and the control signal is derived from the input power or the Output Power as measured with a photodiode. This makes it possible to stabilize the Laser power, i.e. to decrease intensity noise.

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