Atomic vapor spectroscopy in integrated photonic structures
Atomic vapor spectroscopy in integrated photonic structures
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DOI：
10.1063/1.4927172
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发表时间：
2015-07-27
影响因子：
4
通讯作者：
Loew, Robert
中科院分区：
文献类型：
--
作者：
Ritter, Ralf;Gruhler, Nico;Loew, Robert
我们研究了浸入原子蒸气中的集成光学芯片，为光谱学应用提供了多种波导几何形状。当引导光通过波导模式的倏逝尾与铷原子蒸气耦合时，通过氮化硅波导和干涉仪的窄带传输会发生变化。我们使用光栅耦合器在波导模式和辐射波之间进行耦合，这允许寻址芯片表面上的任意耦合位置。倏逝原子-光相互作用可以进行数值模拟，并且与我们的实验数据表现出极好的一致性。这项工作展示了碱原子光谱小型化和集成化的下一步，并为复杂波导结构的进一步基础研究提供了平台。 (C) 2015 AIP 出版有限责任公司。
We investigate an integrated optical chip immersed in atomic vapor providing several waveguide geometries for spectroscopy applications. The narrow-band transmission through a silicon nitride waveguide and interferometer is altered when the guided light is coupled to a vapor of rubidium atoms via the evanescent tail of the waveguide mode. We use grating couplers to couple between the waveguide mode and the radiating wave, which allow for addressing arbitrary coupling positions on the chip surface. The evanescent atom-light interaction can be numerically simulated and shows excellent agreement with our experimental data. This work demonstrates a next step towards miniaturization and integration of alkali atom spectroscopy and provides a platform for further fundamental studies of complex waveguide structures. (C) 2015 AIP Publishing LLC.