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

Claim 12:
13. A method for operating an engineered current-density profile diode laser, comprising:
providing an engineered current-density profile diode laser, including (i) a first portion of semiconductor material, (ii) a quantum well active region on said first portion of semiconductor material, (iii) a second portion of said semiconductor material on said quantum well active region (iv) a metal contact on said second portion of said semiconductor material and (v) a plurality of current vias located between said quantum well active region and said metal contact;
providing a voltage induced current between said metal contact and said quantum well active region; and
wherein spacings between said vias and/or the sizes thereof provide a desired current density per longitudinal direction of said diode laser, said current density increasing from a zero value to a first value at a first position along said longitudinal direction; said current density increasing from said first value to a second value at a second position along said longitudinal direction; said current density decreasing from said second value to a third value, lower than the first value, at a third position along said longitudinal direction; and said current density increasing from said third value to said first value at a fourth position along said longitudinal direction.