This is already sending data via lasers traveling through free space (and air, which has nearly the same speed of light as free space). You're not going to get

This is already sending data via lasers traveling through free space (and air, which has nearly the same speed of light as free space). You're not going to get a medium with a faster speed of light than free space unless you get into space-warping theoretical stuff. Even if you managed to run a fiber optic cable between a satellite and the earth, it would be around a third slower than lasers through space.