偏振高斯光束并合的传输变换特性

Characterization of Polarized Gaussian Beam Combinations

利用光束相干偏振(BCP)矩阵来描述光束的偏振特性,采用高斯型线偏振光按一维排布的并合模型,对并合光束的偏振度进行了深入研究.结果表明并合光束的偏振度在横截面上是不均匀的,且随传输距离变化,还与子光束间距及子光束偏振方向夹角等参数有关.非相干并合光束的光强与子光束的偏振特性无关,而相干并合光束的光强与子光束的偏振特性有关;两种并合方式所得的并合光束光强均与子光束数目。

Characterization changes in the coherent and incoherent combinations of polarized Gaussian beams are studied in detail. It is shown that the degree of polarization of the resulting beam depends on the incoherent or coherent combination, propagation distance, separation distance, numbers of the beamlets and azimuth of the polarization plane of the beamlet. The irradiance distribution of the resulting beam for the coherent case depends on the polarization of the beamlets. However, for the incoherent case it does not.