Yuting Tian, Rong Wu, Mingying Sun, Junyong Zhang, Yanli Zhang, Ye Yang, Shenlei Zhou. Influence of Nonlinear Modulation on the Defocusing Performance of Beam Smoothing Phase Plate[J]. Acta Optica Sinica, 2018, 38(10): 1014003
- Acta Optica Sinica
- Vol. 38, Issue 10, 1014003 (2018)
Fig. 1. Engineering optical path with CPP in the high power laser terminal system
Fig. 2. Quantification of 3D light field. (a) Indirectly driven black cavity injection model; (b) directly driven spherical target compression model
Fig. 3. Nonlinear effect modulation by KDP and WFL. (a) Local peak intensity at different thicknesses in fused silica; (b) nonlinear phase shift related to local B integral
Fig. 4. Calculation model of two indicators for characterizing spot evolution in 3D space. (a) Spot position offset to optical axis; (b) spot intensity distribution of 4 quadrants in x'Oy' coordinate
Fig. 5. Defocus transmission model
Fig. 6. CPP design focal spot under ideal irradiation. (a) 2D focal spot; (b) 1D intensity along two orthogonal directions through the center of optical axis
Fig. 7. Only include nonlinear phase shift at I(z)=5 GW/cm2. (a) Far-field spot; (b) 4 mm defocusing spot
Fig. 8. γ and η versus nonlinear phase shift. (a) γx; (b) ηLRand ηUD
Fig. 9. Intensity in 4 mm defocusing plane taking into accounts both nonlinear intensity and phase distortions. (a) 2D spot; (b) 1D intensity curve of two orthogonal directions
Fig. 10. Position shift and symmetry varying with defocusing distance. (a) Position shift; (b) symmetry
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Table 1. Position shift and symmetry along x axis
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Table 2. Position shift and symmetry along y axis
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