谐振吸收布拉格光栅中的宽缺陷作为极化激元的非线性微谐振器
Wide defect in a Resonantly Absorbing Bragg Grating as a nonlinear microresonator for polaritons
摘要：
用数值模拟的方法研究了谐振吸收布拉格光栅（RABG）中非线性极化激元的透射、反射和缺陷对极化激元的俘获。结果表明，宽缺陷在一定条件下可以有效地作为极化子波存储的微谐振器。考虑了微腔、沟槽和条纹三种缺陷。观察到在放置在RABG中的微腔（没有共振纳米颗粒）内捕获电磁场，以及捕获的偏振模式粘在凹槽（纳米颗粒密度降低的缺陷跨度）和具有相对增加的密度的条带的缺陷边缘。数值计算结果表明，在高原子密度的共振带中，偏振模沿第一边缘的辐射反射和粘附传播很强。
英文摘要：
The nonlinear polariton transmission, reflection and trapping by a defect in the resonantly absorbing Bragg grating (RABG) is demonstrated in numerical simulation. It is shown that the wide defect under some conditions could effectively serve as microresonator for polaritonic wave storage. The three types of the defect such as microcavity, groove and stripe are considered. Capture the electromagnetic field inside the microcavity (with no resonant nanoparticles) placed in the RABG is observed, as well as stuck of trapped polarization modes to the defect edges for the groove (defect span with reduced density of nanoparticles) and for the stripe with relatively increased density. Strong radiation reflection and adhered propagation of the polarization mode along the first edge of the stripe with high density of resonant atoms is exhibited by numerical computation.
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