论文标题
最佳光子极化朝着观察非线性BREIT轮毂生产
Optimal photon polarization toward the observation of the nonlinear Breit-Wheeler pair production
论文作者
论文摘要
我们研究了光子极化的优化，以增加在任意极化平面波背景下Breit-theeler对产生的产量。我们表明，在当前激光粒子实验的强度方向上，优化的光子极化可以将正电子产量提高超过$ 20 \％$。种子光子的最佳极化是由偏振耦合与激光脉冲的极化产生的。给出了偶联系数的紧凑表达式在扰动和非扰动方面的表达式。由于线性和圆极化成分的耦合系数有明显的差异，因此在椭圆极化激光器背景下，种子光子的最佳极化状态偏离了激光极化的正交状态。
We investigate the optimization of the photon polarization to increase the yield of the Breit-Wheeler pair production in arbitrarily polarized plane wave backgrounds. We show that the optimized photon polarization can improve the positron yield by more than $20\%$ compared to the unpolarized case, in the intensity regime of current laser-particle experiments. The seed photon's optimal polarization is resulting from the polarization coupling with the polarization of the laser pulse. The compact expressions of the coupling coefficients in both the perturbative and nonperturbative regime are given. Because of the evident difference in the coupling coefficients for the linear and circular polarization components, the seed photon's optimal polarization state in an elliptically polarized laser background, deviates considerably from the orthogonal state of the laser polarization.
