Dilation framing camera with 4 ps resolution

A framing camera using pulse-dilation technology is reported in this article. The camera uses pulse dilation of an electron signal from a pulsed photo-cathode (PC) to achieve high temporal resolution. While the PC is not pulsed, the measured temporal resolution of the camera without pulse-dilation is about 71 ps. While the excitation pulse is applied on the PC, the measured temporal resolution is improved to 4 ps by using the pulse-dilation technology. The spatial resolution of the dilation framing camera is also measured, which is better than 100 μm. The relationship between the temporal resolution and the PC bias voltage is obtained. The variation of the temporal resolution with the gradient of the PC excitation pulse is also provided