電場電光による光の多段増幅に関する実験

抄録

In recent years, several papers on solid-state image intensifier by the use of eleltroluminescentphosphor and photo conductive materials have appeared as one of the important applications of solid state electronics. It is convenient and important to use the solid-state intensifier for light amplification.
The purpose of this experimental work is to achieve more amplification by cascading the intensitier in multi-stages.
This paper first deals with electrical and optical characteristics of a single element light intensifier, then points out briefly the advantage of employing parallel resistance with electroluminescent-panel to improve its characteristics. The effects of this resistance are studies theoretically and experimentally.
Two type of photo conductive cell were used, one was a sintered CdS cell and the other a CdS photosensitive powder molded with plastic binder.
According to the results obtained on a single element of light intensifier two-stage and threestage light intensifiers were made and their characteristics were experimented on for various parallel resistances.
The use of resistances in the first stage of electroluminescent-panels was effective in improving the amplification characteristics.
In a three-stage light intensifier, amplification of about 400 was obtained at 0.3 rlux in-put radiation, and these results suggest the possibility of obtaining more amplification at lower in-put radiation.
The experimental results are believed to be applicable to solid-state image intensifier by devising a suitable construction.