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arXiv 2010.00751physics.opticscond-mat.mes-hall
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激子-极化激子Laser直接产生径向偏振矢量涡旋光束

Direct Generation of Radially Polarized Vector Vortex Beam with an Exciton-Polariton Laser

Jiaqi Hu, Seonghoon Kim, Christian Schneider, Sven Höfling, Hui Deng

摘要:

矢量涡旋光束是一类在空变偏振态下具有奇异性的光束。矢量涡旋光束激光器在成像和通信等领域有着广泛的应用,其中发射高斯光束的垂直腔激光器应用最为广泛。从垂直腔激光器产生矢量涡旋光束需要外部控制或调制。在这里,通过利用偏振选择亚波长光栅作为垂直半导体微腔中的反射器之一,我们设计的极化激元模式的自旋纹理和演示极化激元激射单模,径向偏振矢量涡旋光束。偏振和相位分布的发射的特征在于偏振分辨成像和干涉。这种矢量涡旋激光束产生方法允许低阈值功率、稳定的单模操作、可扩展性和片上集成,所有这些对于成像和通信中的应用都是重要的。

英文摘要:

Vector vortex beams are a class of optical beams with singularities in their space-variant polarization. Vector vortex beam lasers have applications in many areas including imaging and communication, where vertical-cavity lasers emitting Gaussian beams have been most widely used so far. Generation of vector vortex beams from vertical-cavity lasers has required external control or modulation. Here, by utilizing a polarization-selective subwavelength grating as one of the reflectors in a vertical semiconductor microcavity, we design the spin textures of the polariton mode and demonstrate polariton lasing in a single-mode, radially polarized vector vortex beam. Polarization and phase distributions of the emission are characterized by polarization-resolved imaging and interferometry. This method of vector vortex laser beam generation allows low threshold power, stable single-mode operation, scalability, and on-chip integration, all of which are important for applications in imaging and communication.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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