Fabrication of a nanofiber Bragg cavity with high quality factor using a focused helium ion beam
Fabrication of a nanofiber Bragg cavity with high quality factor using a focused helium ion beam
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DOI：
10.1364/oe.27.006792
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发表时间：
2019-03-04
期刊：
影响因子：
3.8
通讯作者：
Takeuchi, Shigeki
中科院分区：
文献类型：
--
作者：
Takashima, Hideaki;Fukuda, Atsushi;Takeuchi, Shigeki
纳米光纤布拉格腔是一种在光纤中制备的固态微腔。由于其小的模式体积、超高的耦合效率和超宽的可调性，nfbc作为光子量子信息器件的平台很有前途。然而，质量(Q)因子被限制在大约250，这可能是由于制造过程的限制。在这里，我们报道了用聚焦氦离子束制备的高Q nfbc。当制造出具有640周期凹槽的NFBC时，Q因子大于4170，比以前使用聚焦镓离子束制造的NFBC大16倍以上。(C) 2019年美国光学学会根据OSA开放获取出版协议的条款
Nanofiber Bragg cavities (NFBCs) are solid-state microcavities fabricated in an optical tapered fiber. NFBCs are promising candidates as a platform for photonic quantum information devices due to their small mode volume, ultra-high coupling efficiencies, and ultra-wide tunability. However, the quality (Q) factor has been limited to be approximately 250, which may be due to limitations in the fabrication process. Here we report high Q NFBCs fabricated using a focused helium ion beam. When an NFBC with grooves of 640 periods is fabricated, the Q factor is over 4170, which is more than 16 times larger than that previously fabricated using a focused gallium ion beam. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement