ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,493, issued on Oct. 28, was assigned to UNIVERSITE LIBRE DE BRUXELLES (Brussels).
"Active optical resonator for frequency conversion" was invented by Francois Leo (Uccle, Belgium), Simon-Pierre Gorza (Genval, Belgium) and Nicolas Englebert (Etterbeek, Belgium).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical parametric oscillator and method for generating coherent signal light involve a resonant optical cavity for coherent signal light, and in the cavity a non-parametric gain element for amplifying the coherent signal light to only partially compensate for passive optical roundtrip losses, thereby obtaining lower effective roundtrip losses. ...