US Patent Issued to Sumitomo Electric Industries on Jan. 28 for "Vertical-cavity surface-emitting laser" (Japanese Inventor)

ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,212,122, issued on Jan. 28, was assigned to Sumitomo Electric Industries Ltd. (Osaka, Japan).

"Vertical-cavity surface-emitting laser" was invented by Takeshi Aoki (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A vertical-cavity surface-emitting laser includes a substrate having a main surface, a first lower distributed Bragg reflector that extends to an edge of the main surface, a III-V compound semiconductor layer disposed on the first lower distributed Bragg reflector, a second lower distributed Bragg reflector disposed on the III-V compound semiconductor layer, an active layer disposed above the second lower distributed Bragg reflector...