Thread: Are radio lasers possible?

Is it possible to build a laser that operates in the radio frequency range, like between 100 mhz and say 3000 mhz? Would it have all the same properties as a normal (light) laser, of being a single coherent beam, with the same polarization throughout, or are some aspects of the laser effect impossible for those frequencies?


I'm kind of thinking of, like, a radio equivalent of like a laser light pen, except I'm sure the apparatus would have to be larger.

Yes, they exist already naturally and are called masers ("light" is replaced by "microwave" in the acronym).
http://en.wikipedia.org/wiki/Maser
http://en.wikipedia.org/wiki/Astrophysical_maser