ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,396, issued on Dec. 16, was assigned to SONY GROUP Corp. (Tokyo).
"Laser element" was invented by Yukio Hoshina (Kumamoto, Japan) and Hideki Watanabe (Kumamoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a laser element that includes a first semiconductor layer, a second semiconductor layer, an active layer, and an electron barrier layer. The first semiconductor layer includes a group iii nitride semiconductor having a first conductive type. The second semiconductor layer includes a group iii nitride semiconductor having a second conductive type. The electron barrier layer is between the active layer and the second semiconducto...