US Patent Issued to Carl Zeiss SMT on May 13 for "Optical assembly for reducing a spectral bandwidth of an output beam of a laser" (German Inventors)

ALEXANDRIA, Va., June 12 -- United States Patent no. 12,300,959, issued on May 13, was assigned to Carl Zeiss SMT GmbH (Oberkochen, Germany).

"Optical assembly for reducing a spectral bandwidth of an output beam of a laser" was invented by Johannes Kraus (Theilheim, Germany), Oliver Gloeckl (Aalen, Germany) and Markus Deubel (Aalen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical assembly reduces a spectral bandwidth of an output beam of a laser. The assembly includes a beam-expanding optical unit within a laser resonator. The latter serves to increase a beam cross section of a resonator-internal laser beam in at least one expansion cross-sectional dimension such that at least one resonator...