This analog pattern was generated using both Pangolin's abstract generator and my own high-speed image rotation and blanking circuit. I used a Coherent purelight with prismatic coloring modulated through a Cambridge Technology scanner pair tuned at 40,000 points per second. 
I found that when using prismatic coloring, it doesn't hurt to place a couple of rotary solenoids in the color path so when actuated, they filter out any unwanted colors (in this case, all green wavelengths).
Photo by Ted Smith, Lasersmith Light Show Systems info@lasersmith.com