ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,688, issued on Sept. 30, was assigned to IRGLARE LLC (Orlando, Fla.).
"Distributed Bragg reflector quantum cascade lasers" was invented by Hong Shu (Oveido, Fla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A QCL includes a gain region that generates radiation. An optical waveguide feeds the radiation back to the gain region. A first order and/or a second order Bragg reflector are formed in the optical waveguide. The first order Bragg reflector narrows a spectrum of the radiation. The second order Bragg reflector outcouples the radiation through a large facet."
The patent was filed on Aug. 20, 2021, under Application No. 17/407,461.
*For furthe...