Photonic crystal slab cavity simultaneously optimized for ultra-high Q/V and vertical radiation coupling
Photonic crystal slab cavity simultaneously optimized for ultra-high Q/V and vertical radiation coupling
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DOI：
10.1063/1.4991416
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发表时间：
2017-09-25
影响因子：
4
通讯作者：
Gerace, Dario
中科院分区：
文献类型：
--
作者：
Minkov, Momchil;Savona, Vincenzo;Gerace, Dario
我们提出了一种二维光子晶体板腔的设计，其中电场定位是由于晶格中额外的孔，而不是更标准的去除孔的过程。这导致了更严格的场约束和比传统设计小几倍的模态体积。通过对空腔周围的孔进行微小的修改，我们将理论质量因子(Q)优化到20.9 x 10(6)的超高值，并进一步说明了在保持3.7 x 10(6)的高Q的情况下，在垂直方向上与自由空间模式的高耦合效率的可能性。AIP出版社出版。
We present a design for a two-dimensional photonic crystal slab cavity in which the electric field localization is due to an extra hole in the lattice, as opposed to the more standard procedure of removal of holes. This leads to a tighter field confinement and a mode volume that is several times smaller than that of conventionally used designs. Through small modifications of the holes around the cavity, we optimize the theoretical quality factor (Q) to an ultra-high value of 20.9 x 10(6) and furthermore illustrate the possibility for high coupling efficiency to free-space modes in the vertical direction, while keeping a high Q of 3.7 x 10(6). Published by AIP Publishing.