Accession Number:

ADA339228

Title:

HEL Phase Control

Descriptive Note:

Technical rept.

Corporate Author:

CHARLES STARK DRAPER LAB INC CAMBRIDGE MA

Personal Author(s):

Report Date:

1979-09-01

Pagination or Media Count:

91.0

Abstract:

This report summarizes progress toward a solution to the problem of HEL control-loop instability in the presence of thermal blooming. Current phase control loop structure is analyzed, and a dual loop structure is proposed. A corresponding closed loop phase compensation control algorithm is also proposed, and its fundamental requirements identified. Because the key subsystem impacted by the control algorithm is the HEL deformable mirror, considerable attention is paid to adaptive optics deformable mirror requirements for both continuous wave and pulsed lasers.

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE