Patent ID: 11942759
Assignee: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 19:
20. An engineered current-density profile diode laser, comprising:
a first portion of semiconductor material;
a quantum well active region on said first portion of semiconductor material;
a second portion of said semiconductor material on said active region;
a metal contact on said second portion of said semiconductor material; and
a plurality of current vias or apertures located between said quantum well active region and said metal contact and located along a longitudinal direction of said diode laser, said current vias or apertures providing, in use, a controlled spatial variation of current density along the longitudinal direction of said diode laser, the current vias or apertures providing, in use, a relatively higher current density in at least one selected region of the diode laser and a relatively lower current density in at least one other selected region of the diode laser.