Yes, actually the "radio laser" (actually, microwave laser [1]) was the first type of *aser invented!

The reason they haven't been proposed for deep-space communication is that thus far, unlike lasers, they have required bulky cooling mechanisms and solid-state semiconductor masers have not been possible. The future does look brighter due to a recent breakthough, though [2].

[1] http://en.wikipedia.org/wiki/Maser

[2] http://www.nature.com/news/microwave-laser-fulfills-60-years...