US Patent Issued to VISUAL PHOTONICS EPITAXY on Sept. 23 for "Semiconductor laser diode including multiple active layers and a grating layer" (Taiwanese Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,822, issued on Sept. 23, was assigned to VISUAL PHOTONICS EPITAXY Co. LTD. (Taoyuan, Taiwan).

"Semiconductor laser diode including multiple active layers and a grating layer" was invented by Chien-Hung Pan (Taoyuan, Taiwan) and Yu-Chung Chin (Taoyuan, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a semiconductor laser diode including multiple active layers and a grating layer. The semiconductor laser diode includes two (or more than two) active layers, a grating layer, and a tunnel junction. The grating layer and the tunnel junction are provided between the two active layers. The tunnel junction is electrically connected to the ...