https://www.wired.com/story/how-to-build-a-space-communication-system-out-of-lasers/

He’s outfitting a small satellite, the size of a loaf of bread, with an infrared laser system capable of delivering 200 gigabits per second. The NASA-sponsored project, called Terabyte Infrared Delivery, is scheduled to launch in 2019. This system, they’re hoping, will be cheap enough for scientists working on a single project to purchase themselves. “Because the system is so small, it can be low cost,” says Robinson.

Not the best science writing… the article also said:

It also takes less power to send a laser signal than a radio one. The laser delivers information like a syringe, whereas radio sprays like a garden hose. The infrared transmitter at the moon needed less than 50 times the power a radio transmitter would use, says Cornwell.

The LLCD space terminal transmitted less than 1/50th the power an RF system might use- not ” less than 50 times the power a radio transmitter would use”