Open AccessOptical characterization of the on-target OMEGA focal spot at high energy using the full-beam in-tank diagnostic
Author(s) -
K. A. Bauer,
Matthew Heimbueger,
J. Kwiatkowski,
Siddharth Sampat,
L. J. Waxer,
E. C. Cost,
John Kelly,
Victor Kobilansky,
Samuel Finley Breese Morse,
David E. Nelson,
D. Weiner,
Gregory Weselak,
Jun Zou
Publication year - 2020
Publication title -
applied optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.668
H-Index - 197
eISSN - 2155-3165
pISSN - 1559-128X
DOI - 10.1364/ao.395505
Subject(s) - implosion , optics , fluence , laser , beam (structure) , laser beam quality , nova (rocket) , inertial confinement fusion , beam parameter product , characterization (materials science) , omega , laser beams , materials science , physics , plasma , aerospace engineering , nuclear physics , engineering , quantum mechanics
The full-beam in-tank (FBIT) diagnostic has been deployed to directly measure the target-plane beam fluence profile, when operated at high energy, of the OMEGA Laser System at the University of Rochester's Laboratory for Laser Energetics. This paper presents the results of early measurements taken with this diagnostic and discusses an improvement that has overcome performance limitations discovered during the initial testing. The diagnostic gives new insight into the ability of the OMEGA Laser System to provide uniform fluence profiles that are consistent across all 60 beams in the laser. The ultimate goal of the FBIT diagnostic is to allow accurate assessment of the fluence uniformity on a spherical target in 60-beam implosion experiments.