Design, construction and testing a laser power comparator

Abstract EN

A laser power comparator prototype that can be utilized in laboratories has been designed constructed and tested.

The system consists of three main electronic circuits : the laser comparator electronic circuit, sign detector and phase inverting circuit, and an analog-to-digital readout display circuit.

The comparator has two detectors each receives a particular input signal.

Two input signals will be compared and the output will be displayed on a digital readout (or on an oscilloscope).

Power difference up to 0.1mW is achieved.