Research of beam smoothing technologies using CPP, SSD, and PS

Rui Zhang; Jingqin Su; Dongxia Hu; Ping Li; Haoyu Yuan; Wei Zhou; Qiang Yuan; Yuancheng Wang; Xiaocheng Tian; Dangpeng Xu; Jun Dong; Qihua Zhu

doi:10.1117/12.2064950

3 February 2015 Research of beam smoothing technologies using CPP, SSD, and PS

Rui Zhang, Jingqin Su, Dongxia Hu, Ping Li, Haoyu Yuan, Wei Zhou, Qiang Yuan, Yuancheng Wang, Xiaocheng Tian, Dangpeng Xu, Jun Dong, Qihua Zhu

Author Affiliations +

Proceedings Volume 9255, XX International Symposium on High-Power Laser Systems and Applications 2014; 92554B (2015) https://doi.org/10.1117/12.2064950
Event: XX International Symposium on High Power Laser Systems and Applications, 2014, Chengdu, China

Abstract

Precise physical experiments place strict requirements on target illumination uniformity in Inertial Confinement Fusion. To obtain a smoother focal spot and suppress transverse SBS in large aperture optics, Multi-FM smoothing by spectral dispersion (SSD) was studied combined with continuous phase plate (CPP) and polarization smoothing (PS). New ways of PS are being developed to improve the laser irradiation uniformity and solve LPI problems in indirect-drive laser fusion. The near field and far field properties of beams using polarization smoothing were studied and compared, including birefringent wedge and polarization control array. As more parameters can be manipulated in a combined beam smoothing scheme, quad beam smoothing was also studies. Simulation results indicate through adjusting dispersion directions of one-dimensional (1-D) SSD beams in a quad, two-dimensional SSD can be obtained. Experiments have been done on SG-III laser facility using CPP and Multi-FM SSD. The research provides some theoretical and experimental basis for the application of CPP, SSD and PS on high-power laser facilities.

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Rui Zhang, Jingqin Su, Dongxia Hu, Ping Li, Haoyu Yuan, Wei Zhou, Qiang Yuan, Yuancheng Wang, Xiaocheng Tian, Dangpeng Xu, Jun Dong, and Qihua Zhu "Research of beam smoothing technologies using CPP, SSD, and PS", Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 92554B (3 February 2015); https://doi.org/10.1117/12.2064950

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