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arXiv 2003.11402physics.optics
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有限尺寸光子晶体模的拓扑电荷

Topological charge of finite-size photonic crystal modes

Zhixin Wang, Yong Liang, Mattias Beck, Giacomo Scalari, Jérôme Faist

摘要:

拓扑荷是极化矢量绕远场辐射涡旋中心的缠绕数。本文采用包络函数法对光子晶体模的拓扑荷进行了理论分析。一组模式被发现具有独特的偏振特性由其非平凡的包络函数。实验上,在电泵浦的高斜率效率中红外光子晶体面发射激光器中,实现了该模式的激光运转。从单模激光发射的偏振特性直接观察到拓扑荷。

英文摘要:

Topological charges are the winding numbers of polarization vectors around the vortex centers of far-field radiation. In this work, the topological charge of photonic crystal modes is theoretically analyzed using an envelope function approach. A group of modes is discovered with unique polarization properties dictated by their non-trivial envelope functions. Experimentally, lasing operation on such mode is demonstrated in an electrically pumped mid-infrared photonic crystal surface-emitting laser with high slope efficiency. The topological charge is directly observed from the polarization properties of single-mode laser emission.

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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