CONTROL SYSTEM OF LASER FOR PLASMA DIAGNOSTICS

I.M. Koltsov, A.A. Komarov,
V.M. Rybin, A.A.Zelezin

Moscow State Engineering Physics Institute
(Technical University)


One of problems on creation of a diagnostics complex is system engineering of management of parameters tunable lasers. At creation of the automatic system of stabilization of the laser we have tried to achieve from the equipment of maximum productivity at preservation of simplicity of the circuit. For achievement of this purpose the universal interface module, developed in our institute was used. The device is the uniprocessor module, capable to conduct the obtaining, processing and transfer of the data.

As the gauge the optical wave-length sensing element was used. This element can be used for determination of absolute wave-length value in calibration rate and as the deflection of wave-length sensing element when stabilization of wave-length is carried out.

The sensing element contains Fabri-Pero Interferometer with system of lens and coordinate sensing fotodiode, mounted on transport platform of line moving in interference surface. Moving of the sensing element is realized by means of step driver. In calibration rate the scanning of interference surface is carried out by fotodiode of sensing element.