Yitong Wu, Liangliang Ji, Ruxin Li. Impact of laser parameters on attainable upper limit of laser intensity in non-ideal vacuum[J]. High Power Laser and Particle Beams, 2023, 35(1): 012001
- High Power Laser and Particle Beams
- Vol. 35, Issue 1, 012001 (2023)
Fig. 1. Sketch of QED cascade triggered by ultra-intense laser and the depletion of the field
Fig. 2. Distributions of y component of electric field, and density of γ photons and electron positron pairs
Fig. 3. Normalized peak intensity
evolution from analytical calculation based on Eq. (8) and PIC simulations, where the cases 1～4 represent the parameters of Fig.2(a)～Fig. 2(d), respectively
基于式（8）和PIC模拟得到的归一化强度
在不同情形下的演化结果，其中情形1～4分别对应于图2(a)～图2(d)的四种情况
Fig. 4. Attainable peak intensity I 1 as a function of vacuum electron residual density for linearly and circularly polarized pulse with τ 0=5λ /c , ω 0=3λ , waist of laser for linearly polarized pulse with τ 0=5λ /c and duration of the laser for linearly polarized pulse with ω 0=3λ
Fig. 5. Ratio between real attainable peak intensity I 1 and design peak intensity I 0 as a function of vacuum electron residual density for (a) linearly and (b) circularly polarized case with τ 0=5λ /c , ω 0=3λ
Fig. 6. Attainable peak intensity for different vacuum electron residual density as a function of beam waist and beam duration
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