Although the most common use of proximity-focused channel intensifier tubes (CITs) is as optical image amplifiers, electrical gating allows them to be used as fast shutters. Except for gating, however, the effects of imposing transient or pulsed changes on CIT biases have received little attention in the literature. It would be desirable in many applications to attain the maximum possible gain, but not at the expense of reduced signal-to-noise ratio (SNR). In the experiments described here, pulsed biasing was used to increase gain; measurements show a marked increase in gain over the dc gain without the increase in electronic noise and risk of damage that higher dc potentials create.
Presented at the 9th Symposium on Photoelectronic Imaging Devices
- Pub Date:
- September 1987
- Channels (Data Transmission);
- Image Intensifiers;
- Camera Shutters;
- Gates (Circuits);