Nano and sub-nanosecond optical image framing recording system

A nano and sub-nanosecond optical image framing recording system is presented here to meet the photography demands of 108～1010 Hz frequency in extreme conditions, such as laser flyer and Z-pinch. The overall system design and its principle are introduced. Several key techniques and solutions (such as precise synchronization, high voltage pulser etc). are put forward. The precise synchronization of sub-systems is carried out by a microcomputer and some precise delay units. Nano and sub-nanosecond rise time high voltage pulses are provided by an avalanche transistor array. Picosecond level time delay is generated by 8-bit programmable analog delay chip DS1023-25 and FPGA. Some key experiments have been completed and the experiment results such as 4 000 V high voltage pulse of rise time less