Experimental setup of the OPA at 1553 nm. DFB, distributed feedback; PPLN, periodically poled lithium niobate.

New 193nm Laser Creates Vortex Beams for Advanced Chipmaking

A groundbreaking compact solid-state laser system generates 193-nm coherent light for semiconductor lithography while also producing the first-ever 193-nm vortex beam carrying orbital angular momentum, offering superior coherence and potential applications in wafer processing, defect inspection, and quantum technologies.