Problem when plotting two isotherms

Hello, I am simulating two laser beams in a piece of Aluminum. The beams are separated by a distance of 150 microns with a velocity of 40mm/s. The first beam goes from 0 to 0.5 s, while the second starts in 0.51s to 1.01s in the opposite direction.
I want to plot both of isotherms, but in the same plane, one at 0.25s and the other in 0.76s. I want to know if there is a way to mix two 2D plots.