Introduction

Our group deals with a concrete application of a gas discharge-system. Such system is used to convert infrared irradiation into visible light. The functional principle is based on combination of photosensitive properties of a semiconductor and a non linear current voltage characteristic line of gas discharge. The work is wide advanced. A running system of the IR converter is build up in co-operation with the A.F. Ioffe Institute St. Petersberg. Since 1994 this systems is used in our laboratory and in the last two years it was tested in a few possible applications.