Wavefront Distortion Effect on Far-Field Spatio-Temporal Distribution in Compression and Focusing Process

Bilong Hu; Xiao Wang; Wei Li; Xiaoming Zeng; Jie Mu; Yanlei Zuo; Xiaodong Wang; Zhaohui Wu; Jingqin Su

doi:10.3788/AOS202040.1132001

Acta Optica Sinica, Volume. 40, Issue 11, 1132001(2020)

Wavefront Distortion Effect on Far-Field Spatio-Temporal Distribution in Compression and Focusing Process

Bilong Hu^1,2,3, Xiao Wang^1,2、*, Wei Li^1,2,3, Xiaoming Zeng^1,2, Jie Mu^1,2, Yanlei Zuo^1,2, Xiaodong Wang^1,2, Zhaohui Wu^1,2, and Jingqin Su^1,2

Author Affiliations

¹Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China

²Science and Technology on Plasma Physics Laboratory, Mianyang, Sichuan 621900, China

³Graduate School, China Academy of Engineering Physics, Beijing 100088, China

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Figures & Tables(8)

Fig. 1. Grating pair compressor

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Fig. 2. Far-field spatio-temporal distributions under ideal circumstance. (a) Spatial distribution; (b) spatio-temporal distribution (x=0); (c) spatio-temporal distribution (y=0)

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Fig. 3. Far-field spatio-temporal distributions with different aberrations. (a) Spatial distribution; (b) spatio-temporal distribution; (c) temporal distribution

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Fig. 4. Strehl ratio varying with X_PV. (a) Tilt; (b) defocus; (c) astigmatism; (d) spherical aberration

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Fig. 5. Pulse width varying with X_PV. (a) Tilt; (b) defocus; (c) astigmatism; (d) spherical aberration

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Table 1. Function expressions of the first nine Zernike polynomials and Square-Radial polynomials

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Table 1. Function expressions of the first nine Zernike polynomials and Square-Radial polynomials

Order N	n_z,m_z	Zernike coefficient	Circular (Zernike)	Aberration coefficient	Square (Square-Radial)
0	0,0	Z₀	1	S₀	1
1	1,1	Z₁	rcos θ	S₁	rcos θ
1	1,-1	Z₂	rsin θ	S₂	rsin θ
2	2,0	Z₃	2r²-1	S₃	2r²-2/3
2	2,2	Z₄	r²cos 2θ	S₄	r²cos 2θ
2	2,-2	Z₅	r²sin 2θ	S₅	r²sin 2θ
3	3,1	Z₆	(3r²-2)rcos θ	S₆	(15r²-7)rcos(θ/5)
3	3,-1	Z₇	(3r²-2)rsin θ	S₇	(15r²-7)rsin(θ/5)
4	4, 0	Z₈	6r⁴-6r²-1	S₈	2(315r⁴-240r²+31)

Table 2. Parameters of compressor
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Table 2. Parameters of compressor
Pulse width τ_in /ps Beam aperture D_x×D_y /(m×m) Grating constant d /mm Incident angle α /(°) Separation of the grating pair G /m
780 100×100 1/1740 53 0.85

Table 3. Error tolerances under different conditions
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Table 3. Error tolerances under different conditions
Goal Error tolerance
Tilt Defocus Astigmatism Spherical aberration
η_SR>90% X_PV<20.02λ X_PV<0.21λ X_PV<0.25λ X_PV<0.09λ
Δt<10% X_PV <14.14λ X_PV <2.35λ X_PV <0.51λ X_PV <0.15λ

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Bilong Hu, Xiao Wang, Wei Li, Xiaoming Zeng, Jie Mu, Yanlei Zuo, Xiaodong Wang, Zhaohui Wu, Jingqin Su. Wavefront Distortion Effect on Far-Field Spatio-Temporal Distribution in Compression and Focusing Process[J]. Acta Optica Sinica, 2020, 40(11): 1132001

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