Blanking scanner? You could use near all sort of galvano scanners for blanking a laser beam. But try to use optics to make the laser beam very tiny, then you place a galvo mirror or something like that in a way that it is just not get hitting by the focused beam. Offcoarse when you need to blank, let the galvo move a little bit into the laser beam. And yes, you need optics to make the beam smaller, and to the normal size again. If you don't do that, the blanking speed is very slow, and stresses the galvo very high.