[eclecticEel]

It has to be microwaves, which can be done at 90%+ efficiency. Lasers would never work, the writer’s smoking crack on that one.

[Wonder Warthog]

"It has to be microwaves, which can be done at 90%+ efficiency. Lasers would never work, the writer’s smoking crack on that one."

MASER....predecessor of the LASER..."microwave amplification by stimulated emission of radiation"