Wavefront Evolution and Analysis of 10-Petawatt Laser System

Jianye Wang; Zhen Guo; Lianghong Yu; Zebiao Gan; Wenqi Li; Xiaoyan Liang

doi:10.3788/CJL201946.0801006

Chinese Journal of Lasers, Volume. 46, Issue 8, 0801006(2019)

Wavefront Evolution and Analysis of 10-Petawatt Laser System

Jianye Wang^1,2,3, Zhen Guo^1,2, Lianghong Yu^1、*, Zebiao Gan¹, Wenqi Li¹, and Xiaoyan Liang^1、**

¹ State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China

² University of Chinese Academy of Sciences, Beijing 100049, China

³ ShanghaiTech University, Shanghai 201210, China

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Figures & Tables(7)

Fig. 1. Schematic of SULF system

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Fig. 2. Optical path schematics for wavefront measurement. (a) Amplification part; (b) OAP measurement

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Fig. 3. Evolution of wavefront at nodes of laser system

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Fig. 4. Phase distributions. (a) Phase test pattern of 220 mm Ti∶sapphire amplifier; (b) phase distribution after 115-180 mm expansion; (c) phase distribution after one pass; (d) phase distribution after two pass; (e) phase distribution after three pass

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Fig. 5. Comparison of phase distributions. (a) Before adjusting strip; (b) after adjusting strip

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Table 1. Zernike coefficient measurements at each node

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Table 1. Zernike coefficient measurements at each node

Measured point	0° astigmatism	45° astigmatism	X axis coma	Y axis coma	Spherical aberration
1	0.031	0.065	-0.075	-0.019	0.013
2	0.063	-0.001	0.040	0.037	-0.011
3	-0.090	0.225	-0.216	0.190	-0.079
4	-0.156	0.082	-0.140	-0.008	0.013
5	-0.123	-0.125	-0.025	-0.026	0.005
6.1	-0.209	-0.071	0.020	-0.103	0.021
6.2	0.039	0.399	-0.063	0.027	0.011
6.3	0.183	0.176	-0.224	0.069	-0.009
7	0.317	-0.318	-0.097	0.027	-0.057
8	-0.118	-0.382	-0.037	0.347	0.029
9.1	-0.053	0.166	0.173	-0.285	-0.110
9.2	-0.412	0.126	0.206	-0.241	-0.115
9.3	0.671	-0.998	0.007	0.082	-0.110

Table 2. Wavefront measurements at each node for 220 mm Ti∶sapphire amplifier
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Table 2. Wavefront measurements at each node for 220 mm Ti∶sapphire amplifier
Measured point PV value /μm RMS /μm
Ⅰ 2.3448 0.3192
Ⅱ 2.2400 0.3472
Ⅲ 2.4552 0.3504
Ⅳ 2.0800 0.2968

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Jianye Wang, Zhen Guo, Lianghong Yu, Zebiao Gan, Wenqi Li, Xiaoyan Liang. Wavefront Evolution and Analysis of 10-Petawatt Laser System[J]. Chinese Journal of Lasers, 2019, 46(8): 0801006

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