US Patent Issued to FreeSpace Photonics on Aug. 25 for "Semiconductor laser structure for higher-order mode suppression" (Wisconsin Inventors)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,719,234, issued on Aug. 25, was assigned to FreeSpace Photonics Inc. (Madison, Wis.).

"Semiconductor laser structure for higher-order mode suppression" was invented by Steven A. Jacobs (Madison, Wis.) and Robert A. Marsland (Madison, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor laser including a waveguide having a core, a confinement layer to bury the core, and a metallization layer. The core includes an active core region. The confinement layer surrounds the core and includes a first confinement layer between the core and the semiconductor substrate below the core, a second confinement layer above the core, and a third confinemen...