US Patent Issued to HAMAMATSU PHOTONICS on Aug. 4 for "Quantum cascade laser element and quantum cascade laser device" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,700,712, issued on Aug. 4, was assigned to HAMAMATSU PHOTONICS K.K. (Hamamatsu, Japan).

"Quantum cascade laser element and quantum cascade laser device" was invented by Atsushi Sugiyama (Hamamatsu, Japan) and Shinichi Furuta (Hamamatsu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A quantum-cascade laser element includes: an embedding layer including a first portion formed on a side surface of a ridge portion, and a second portion extending from an edge portion of the first portion along a width direction of a semiconductor substrate; and a metal layer formed at least on a top surface of the ridge portion and on the first portion. A surface of th...