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Optical polarization shift in beams emitted by quantum cascade lasers

机译:量子级联激光器发射光束的光偏振位移

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In this paper, we present experimental results of current-induced polarization change and transverse mode change in mid-infrared quantum cascade lasers. The polarization of laser beam was determined by measuring of far-field distributions of polarization projection on the linear polarization basis. The measured amount of TE-polarized light is associated with transversal mode structure, which was determined based on the far-field power distributions. The TE polarized light contribution in the beams varies from 6 to 19%. This quantity is anti-correlated to the fundamental transverse mode contribution.
机译:在本文中,我们介绍了中红外量子级联激光器中电流引起的偏振变化和横向模式变化的实验结果。通过在线性偏振的基础上测量偏振投影的远场分布来确定激光束的偏振。 TE偏振光的测量量与基于远场功率分布确定的横向模式结构相关。光束中的TE偏振光贡献在6%到19%之间。该数量与基本横模贡献无关。

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