US Patent Issued to VISUAL PHOTONICS EXPITAXY on Sept. 23 for "Vertical-cavity surface-emitting semiconductor laser diode with the mode filter" (Null, Taiwanese Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,824, issued on Sept. 23, was assigned to VISUAL PHOTONICS EXPITAXY Co. LTD (Taoyuan, Taiwan).

"Vertical-cavity surface-emitting semiconductor laser diode with the mode filter" was invented by Van-Truoung Dai (Vinhphuc Province, Viet Nam), Yu-Chung Chin (Taoyuan, Taiwan), Chao-Hsing Huang (Taoyuan, Taiwan) and Van-Chien Nguyen (Hai phong, Viet Nam).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a vertical-cavity surface-emitting semiconductor laser diode, including a substrate and an epitaxial stack structure disposed on the substrate. The epitaxial stack structure includes an active region, a current confinement layer and a mode filter l...