Laser bolts that you can see

The rolling shutter effect is how lasers are traditionally seen to move in bolts across the screen of your favorite sci-fi action flick. Lasers are rapidly pulsed such that the screen only picks up the laser in certain places. When the camera matches a multiple of the laser pulse speed the laser can look like it's moving slowly. This is the same reason a car wheel or helicopter rotor looks like it's moving slowly, stationary, or moving backwards on screen, unless tricks with shutter speed or post-processing changes it to what a human would see in real life. For a laser to be see as a bolt in real life it would need to be moving far too slowly to actually be a laser.

The idea is to use constructive interference between multiple laser beams. The laser beams would be of a wavelength invisible on the spectrum of visibility. When they meet they would change via diffraction into the visible wavelength, but only where they meet. If you use a wide beam or rapidly wave it back and forth you can make bolts appear to move in real physical space.

Now that I think about it, this is a hologram that could be used practically without anything more than a fog machine to make volumetric projections of any type, size, or color.