Multiple-circuit pulse generator for high repetition rate rare gas halide lasers

Abstract

A multiple-circuit high pulse repetition frequency (PRF) pulse generator for the pumping of rare gas halide lasers is reported. With this multiple-circuit design, high PRF can be achieved by the use of existing low PRF thyratron switches and capacitors. A two-circuit pulse generator was constructed, and its performance is described. By means of this pulse generator and a blowdown-type fast transverse-flow system, high PRF laser action in XeF was obtained, typically, 6 mJ/pulse at 1 kHz or 6 W average power. High PRF laser action in N(2) was also observed.

Note: An avalanche transistor-based nanosecond pulse generator with 25 MHz repetition rate

“…It is based on multiple avalanche transistor sections connected in parallel to the same load and triggered sequentially. A similar principle for increasing the pulse repetition rate of thyratron-based generators has been demonstrated [13], but without the provisions for synchronization detailed in our work.…”

“…It is based on multiple avalanche transistor sections connected in parallel to the same load and triggered sequentially. A similar principle for increasing the pulse repetition rate of thyratron-based generators has been demonstrated [13], but without the provisions for synchronization detailed in our work. The pulse generator is designed for a specific application: driving the photocathode of a fast-gating image intensifier [14] for synchronized imaging of the ion micromotion in an rf trap [15] at a frequency of about f=25 MHz.…”