US Patent Issued to Applied Materials on Sept. 8 for "Methods to reduce optical loss of an AR waveguide" (California Inventors)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,730,256, issued on Sept. 8, was assigned to Applied Materials Inc. (Santa Clara, Calif.).

"Methods to reduce optical loss of an AR waveguide" was invented by Ludovic Godet (Sunnyvale, Calif.) and Jinxin Fu (Fremont, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods for modifying the interface of optical substrates. To achieve desirable optical properties, surface defects need to be removed from the interface layer. In one example, a substrate is exposed to an ion beam then a high temperature bake or laser annealing to correct the interface layer. In another example, a high energy ion beam can be used to remove the interface layer then a new ...