公开(公告)号：US10910793B2

公开(公告)日：2021-02-02

申请号：US16659526

申请日：2019-10-21

Applicant: HRL Laboratories, LLC

Inventor： Daniel Yap ,  Rongming Chu ,  Andrew Pan

IPC: H01S5/30 ,  H01S5/187 ,  H01S5/34

Abstract: A laser or light emitter for operation at a cryogenic temperature includes a single quantum well layer, an n-type barrier layer directly on a first surface of the single quantum well layer, and a p-type barrier layer directly on a second surface of the single quantum well layer opposite the first surface of the single quantum well layer. The single quantum well layer is between the p-type barrier layer and the n-type barrier layer and the compositions of the n-type barrier layer and the p-type barrier layer are graded.