ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,785,351, issued on Nov. 3, was assigned to Hitachi Industrial Equipment Systems Co. Ltd. (Tokyo).
"Frequency-converting laser device" was invented by Wolfgang Schusslbauer (Boppelsen, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A frequency-converting laser device that is efficient but at the same time has a simple structure contains an optical resonator that has two resonator mirrors, specifically a coupling-out mirror and an end mirror. The laser device furthermore contains an optically active medium for generating light of a first frequency and an optically nonlinear medium for converting light of the first frequency into light of anothe...