Optimal photon polarization toward the observation of the nonlinear Breit-Wheeler pair production

被引：10

作者：

Gao, Yunquan ^{[1
]}

Tang, Suo ^{[1
]}

机构：

[1] Ocean Univ China, Coll Phys & Optoelect Engn, Qingdao 266100, Shandong, Peoples R China

来源：

PHYSICAL REVIEW D | 2022年 / 106卷 / 05期

基金：

中国国家自然科学基金;

关键词：

LIGHT; FIELD;

D O I：

10.1103/PhysRevD.106.056003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 the result of the polarization coupling with the polarization of the laser pulse. The compact expressions of the coupling coefficients in both the perturbative and nonperturbative regimes 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.

引用

页数：9

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