随机电磁光束通过像散光学系统后的偏振恒定性

Chinese Journal of Lasers(2011)

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Abstract
基于高斯-谢尔模型光源模型及柯林斯衍射积分公式,通过近似求解得到了随机电磁光束通过像散光学系统传输后其偏振度保持恒定的充分条件。解析结果及数值模拟仿真结果均显示,当光学系统像散系数足够大且与光源参数存在一定的制约关系时,光束传输后参考平面处偏振度保持恒定并且与光源处初始偏振度相同。该充分条件的成立性不受光学系统元素及传输距离等其他因素的制约,因此具有一定的独立性。该充分条件对于光学系统偏振成像及光路偏振探测等实际应用工程具有潜在的理论参考价值。
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Key words
Astigmatic optical system,Invariant polarization,Physical optics,Polarization imaging,Stochastic electromagnetic beam
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