US Patent Issued to HAMAMATSU PHOTONICS on Aug. 25 for "Quantum cascade laser element, quantum cascade laser device, and method for manufacturing quantum cascade laser element" (Japanese Inventor)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,719,240, issued on Aug. 25, was assigned to HAMAMATSU PHOTONICS K.K. (Hamamatsu, Japan).

"Quantum cascade laser element, quantum cascade laser device, and method for manufacturing quantum cascade laser element" was invented by Atsushi Sugiyama (Hamamatsu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A quantum cascade laser element includes: a semiconductor substrate; a semiconductor laminate including an active layer and having a first end surface and a second end surface facing each other in an optical waveguide direction; a first electrode; a second electrode; and an anti-reflection film formed on the first end surface. The semiconductor lamin...