Takashima Hideaki, Fujiwara Masazumi, Schell Andreas W, Takeuchi Shigeki
Opt Express. 2016 Jun 27;24(13):15050-8. doi: 10.1364/OE.24.015050.
Coupling of a single dipole with a nanofiber Bragg cavity (NFBC) approximating an actually fabricated structure was numerically analyzed using three dimensional finite-difference time-domain simulations for different dipole positions. For the given model structure, the Purcell factor and coupling efficiency reached to 19.1 and 82%, respectively, when the dipole is placed outside the surface of the fiber. Interestingly, these values are very close to the highest values of 20.2 and 84% obtained for the case when the dipole was located inside the fiber at the center. The analysis performed in this study will be useful in improving the performance of single-photon emitter-related quantum devices using NFBCs.
使用三维时域有限差分模拟，针对不同的偶极子位置，对单个偶极子与近似实际制造结构的纳米纤维布拉格腔（NFBC）的耦合进行了数值分析。对于给定的模型结构，当偶极子置于纤维表面之外时，珀塞尔因子和耦合效率分别达到19.1和82%。有趣的是，这些值与偶极子位于纤维内部中心位置时获得的最高值20.2和84%非常接近。本研究中进行的分析将有助于提高使用NFBC的单光子发射器相关量子器件的性能。
