Scientists demonstrate world's first continuous-wave lasing of deep-ultraviolet laser diode at room temperature

https://phys.org/news/2022-11-scientists-world-continuous-wave-lasing-deep-ultraviolet

"LED sterilization time-inefficient... lasers disinfect large areas in short time over long distances reducing drive power needed... 1.1W at room temperature... inability of effective current paths... strong crystal strain creates these defects... tailoring side walls laser stripe suppressed crystal defects, efficient current flow to active region of laser diode... sterilized operating rooms and tap water... virus detection, particulate measurement, gas analysis, high-definition laser processing"

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