The art of achieving a large energy discharge in a controlled manner with relative ease is to use a pulse forming network. Historically the design of such networks generally used a single inductor and capacitor. Although easy to design and implement, this practice does not provide optimum performance in all cases. In particular, most laser welding requires a uniform energy discharge in a pulse to produce a high quality weld. Analysis has shown that when the pulse forming network approximates a lumped constant transmission line a maximum flat pulse is produced with minimal degradation of the pulse rise time. This is highly favorable in achieving a producible design since all the capacitors will be of equal value as will all the inductors. This paper will show that a low pass filter ladder network composed of equal capacitors and inductors provides a flat pulse whose energy discharge becomes more uniform as the filter's order increases.
Martin, Robert J.
Master of Science (M.S.)
College of Engineering
Electrical Engineering and Communication Sciences
Length of Campus-only Access
Masters Thesis (Open Access)
Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic
Koschmann, Eric Calvin, "Uniform energy discharge for pulsed lasers" (1988). Retrospective Theses and Dissertations. 4301.