Im trying to pulse an LED on for 200 nanoseconds. Im using the DS1040z One shot pulse generator to send a pulse width of 200 nanoseconds to the gate of a MOSFET. Using an Oscilloscope, I was able to get that 200 nanosecond pulse width. But when I probe from drain to source, I get this dampening or dissipative oscillating signal at the Drain to source. Im not too sure why or whats causing this to happen. Also, my 200 nanosecond pulse is not a pretty square wave. What can I add to the circuit to improve the shape of the square wave?