Active Pointing Control of Pulsed, High-Power Laser Beam After 65-Meter Transport*

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Laser-Assisted Charge Exchange (LACE) requires the position and angle of a high-power laser beam to be stable at the sub-millimeter and sub-milliradian level at a point 65 meters from the laser. Due to the high laser power and improvised nature of the laser transport line, the laser beam suffers from pointing instabilities in the form of drift and pulse-to-pulse jitter. A closed-loop Laser Pointing Control System (LPCS) has been developed in the lab and deployed to the field to control and stabilize both the position and angle of the laser beam. The LPCS relies on feedback between CMOS cameras and beam relay mirrors on kinematic mounts controlled by a PC running custom LabVIEW software. The system has been demonstrated to reduce the standard deviation of beam position to 200 µm and of pointing angle to 300 µrad at the interaction point, corresponding to a reduction of ~2x.

Original languageEnglish
Title of host publication2022 IEEE 17th International Conference on Control and Automation, ICCA 2022
PublisherIEEE Computer Society
Pages565-570
Number of pages6
ISBN (Electronic)9781665495721
DOIs
StatePublished - 2022
Event17th IEEE International Conference on Control and Automation, ICCA 2022 - Naples, Italy
Duration: Jun 27 2022Jun 30 2022

Publication series

NameIEEE International Conference on Control and Automation, ICCA
Volume2022-June
ISSN (Print)1948-3449
ISSN (Electronic)1948-3457

Conference

Conference17th IEEE International Conference on Control and Automation, ICCA 2022
Country/TerritoryItaly
CityNaples
Period06/27/2206/30/22

Funding

*This work has been partially supported by the U.S. DOE Grant No. DE-FG02-13ER41967. ORNL is managed by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 for the U.S. Department of Energy.

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