公开(公告)号：US10520360B1

公开(公告)日：2019-12-31

申请号：US16050060

申请日：2018-07-31

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： Michael L. Dupuis ,  Daniel K. Smith ,  Daniel Lam ,  Christopher J. Lieto ,  Michael E. Farey ,  Joshua E. Rothenberg

IPC: G01J1/42 ,  G01J1/04 ,  G01J1/44

Abstract: A beam quality measurement system for determining beam quality of a high power laser beam from a laser system by power-in-the-bucket (PIB) measurements in a laboratory environment. The system includes a beam compressor assembly for compressing the diameter of the laser beam, and a diagnostic bench assembly that receives the reduced diameter low power beam from the beam compressor assembly. The bench assembly includes a pinhole array positioned at a focal plane of a lens and that includes a plurality of different sized pinholes and a translation stage for moving the pinhole array. The bench assembly also includes a power meter that receives the focused beam after it has passed through a pinhole in the pinhole array, where the power meter generates a signal that causes the stage to move the pinhole array to position another pinhole when the power meter identifies a maximum power received from one pinhole.