Amazing stuff! This is a very wordy, verbose article! It seems to be a long overview article written by some of the researchers in this area, but it does not seem to present very new, latest research (most recent research discussed dates to June 2023 if I am correct). It contains quite a few interesting charts.
Caveat: I did not have the time to read it all!
"... Over the past couple of decades, our team at Kyoto University has been developing a new type of semiconductor laser that blows through the brightness ceiling of its conventional cousins. We call it the photonic-crystal surface-emitting laser, or PCSEL (pronounced “pick-cell”). Most recently, we fabricated a PCSEL that can be as bright as gas and fiber lasers—bright enough to quickly slice through steel—and proposed a design for one that is 10 to 100 times as bright. Such devices could revolutionize the manufacturing and automotive industries. ... can push PCSEL brightness further still, it would even open the door to exotic applications like inertial-confinement nuclear fusion and light propulsion for spaceflight. ..."
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