ABSTRACT The free-space evolution of a conically refracted Gaussian beam after being imaged by a lens is studied both theoretically and experimentally. It is shown that, in contrast to the longitudinal symmetry of a regular conically refracted beam with respect to its focal plane, the imaged beam acquires a strong longitudinal asymmetry, similarly to other known coherent beams with complex internal structure evolving upon propagation. Paraxial amplitude expressions for the two conical refraction components of the imaged beam are derived as functions of the imaging lens focal length and of the magnification value. A very good agreement between theoretical and experimental results is demonstrated.

中文翻译：

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由透镜变换的锥形折射高斯光束

摘要 从理论和实验两方面研究了锥形折射高斯光束在被透镜成像后的自由空间演化。结果表明，与规则锥形折射光束相对于其焦平面的纵向对称性相比，成像光束获得了强烈的纵向不对称性，类似于其他已知的具有复杂内部结构的相干光束在传播时演变。成像光束的两个锥形折射分量的近轴振幅表达式是作为成像镜头焦距和放大率值的函数导出的。证明了理论和实验结果之间非常好的一致性。