Improvement of image quality of framing streak tube with FOP output window

Bright and dark spots noise phenomena observed on the phosphor screen output of framing streak tube with Fiber Optic Plate (FOP) output window have been investigated and the mechanism of these phenomena has been attributed to undesirable accumulation of charge on the FOP because of nonuniformity of FOP resistance. In order to solve these noise problems, the transparent conductive layer (ITO) was inserted between the FOP and phosphor screen. It was shown that bright and dark spot noises were completely eliminated by this method. In addition to this improvement, the conversion gain of the phosphor was also shown to be improved. The improvement of conversion gain and spatial resolution were about 1.5 approximately 2.0 times compared to conventional values. This method could be effectively applied to all kinds of imaging devices with FOP in which the high quality of the image intensification is most important.© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.