The 3-mm PCSEL is set to revolutionize Society 5.0 with its powerful, yet compact design. Brighter than traditional semiconductor lasers, the PCSEL can cut through steel with ease. Through innovative construction involving a photonic-crystal layer and novel reflector design, the brightness of the PCSEL has been pushed to new heights, rivaling high-power gas and fiber lasers. The potential applications are vast, from industrial manufacturing to light propulsion for spaceflight. Excitingly, further advancements are on the horizon, aiming to make even more powerful, efficient, and affordable PCSELs a reality. The future is bright—literally—with the PCSEL leading the way.
https://spectrum.ieee.org/pcsel