Maybe telescopes someday, any sufficiently important science’s applications is not predictable, see Kroemer’s Nobel lecture on semiconductor heterostructures.
That said, it seems like the immediate application is improved research lab instrumentation to be used for molecular chemistry investigation of small samples, short distances, short times to pick apart biochemical reaction pathways for problematic / poorly understood / interesting reactions ( prions, membranes, …); they cite improvements on “single-molecule Raman and FRET spectroscopy” see https://en.wikipedia.org/wiki/F%C3%B6rster_resonance_energy_transfer#:~:text=FRET%20can%20be%20used%20to,successful%20mixing%20of%20different%20membranes.
There's that name again. Sort of like "Byrd" in West Virginia.
Harnessing Light for Powerful Signals Similar to how a radio antenna captures a broadcast from the air and concentrates the energy into music.
/facepalm
now where has super-concentrated light been seen in action? Oh yeah...Star Trek, Flash Gordon, the Forbidden Planet...
Wonka already developed one.