Wavefront correction for static and dynamic aberrations to within 1 second of the system shot in the NIF Beamlet demonstration facility

Robert Hartley; Michael W. Kartz; William C. Behrendt; Andy Hines; George Pollock; Erlan S. Bliss; J. Thaddeus Salmon; Scott Winters; Bruno M. Van Wonterghem; Richard A. Zacharias

doi:10.1117/12.294315

8 December 1997 Wavefront correction for static and dynamic aberrations to within 1 second of the system shot in the NIF Beamlet demonstration facility

Robert Hartley, Michael W. Kartz, William C. Behrendt, Andy Hines, George Pollock, Erlan S. Bliss, J. Thaddeus Salmon, Scott Winters, Bruno M. Van Wonterghem, Richard A. Zacharias

Author Affiliations +

Proceedings Volume 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference; (1997) https://doi.org/10.1117/12.294315
Event: Second International Conference on Solid State Lasers for Application to ICF, 1996, Paris, France

Abstract

The laser wavefront of the NIF Beamlet demonstration system is corrected for static aberrations with a wavefront control system. The system operates closed loop with a probe beam prior to a shot and has a loop bandwidth of about 3 Hz. However, until recently the wavefront control system was disabled several minutes prior to the shot to allow time to manually reconfigure its attenuators and probe beam insertion mechanism to shot mode. Thermally-induced dynamic variations in gas density in the Beamlet main beam line produce significant wavefront error.

Citation Download Citation

Robert Hartley, Michael W. Kartz, William C. Behrendt, Andy Hines, George Pollock, Erlan S. Bliss, J. Thaddeus Salmon, Scott Winters, Bruno M. Van Wonterghem, and Richard A. Zacharias "Wavefront correction for static and dynamic aberrations to within 1 second of the system shot in the NIF Beamlet demonstration facility", Proc. SPIE 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference, (8 December 1997); https://doi.org/10.1117/12.294315

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