18 August 2005 Beam smoothing on oblique surface after focus plane
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Abstract
Indirect-drive Inertial Confinement Fusion(ICF) system has two requests: first, it requires incident beam to focus on a small spot with very low circular side-lobe around the edge of the hole; second, when it continue to transmit onto the wall of cavity, it requires uniform illumination. A two-step iteration algorithm aiming at two positions of this system is proposed to match these two requests with using Pure Phase Plate (PPE). Our results show that the circular side-lobe near the target hole has been depressed to about 10-11 W/cm2, and the beam has small top modulation on the target wall.
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Yong-Ping Li, Yong-Ping Li, Rong Wu, Rong Wu, Xiaobo Zhang, Xiaobo Zhang, Wei Zhang, Wei Zhang, Fangjie Shu, Fangjie Shu, } "Beam smoothing on oblique surface after focus plane", Proc. SPIE 5876, Laser Beam Shaping VI, 587612 (18 August 2005); doi: 10.1117/12.615613; https://doi.org/10.1117/12.615613
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