We've known how to build lasers for many decades, but it's only now that the technology has gotten inexpensive enough, and become mature enough that we can imagine having huge arrays, literally, kilometer-scale arrays, much like solar farms, but instead of receiving light, they transmit light.
Hemos sabido construir láseres por muchas décadas, pero es ahora cuando la tecnología se ha vuelto lo suficientemente barata, y ha madurado lo suficiente para imaginar tener enormes formaciones que literalmente ocupan km, parecidas a las granjas solares, pero en vez de recibir luz, la transmiten.