That ratio is so bad only because they're using really inefficient decades-old lasers. Equivalent modern lasers have forty times better efficiency. https://phy

That ratio is so bad only because they're using really inefficient decades-old lasers. Equivalent modern lasers have forty times better efficiency. https://physicstoday.scitation.org/do/10.1063/pt.6.2.20211020a/full/ https://physicstoday.scitation.org/do/10.1063/pt.6.2.2021102...