SPPs激射中Airy表面等离子的特性分析

为了研究表面等离子体(SPPs)传播产生的Airy等离子的特性,分析和仿真了Airy等离子的独特性质。利用SPPs的激射原理,对Airy等离子的本征态进行了理论分析,研究了光栅耦合SPPs的激射结构中Airy等离子的性质。结果表明:无衍射的Airy表面等离子不仅具有在近场能量放大和快速传播的特性,而且还能利用其特性控制光束的传播;Airy表面等离子只有在一定宽度下与光激发的相互作用才能抑制能量损耗,在基质宽度小于600 nm左右时无法出现显著的Airy表面等离子;不同宽度的基质条件下激射能量与产生Airy离子的趋势一致;Airy表面等离子在激发能量较小时就能实现快速传播,在2.3 eV作用时能量的增加对Airy的等离子的作用不再明显。这一研究对于SPPs的强局域化应用实现、表面光学处理和线性控制无衍射SP光学产生了积极的作用。

Analysis of characteristics with Airy surface plasmon in SPPs lasing

In order to study on surface plasmon polaritons (SPPs) which have Airy plasma characteristics, the special nature of Airy plasma was analyzed and simulated. Based on the principle of SPPs lasing, the theoretical of Airy plasma eigenstates was analyzed. The nature of Airy plasma on the grating structures of SPPs lasing was studied. The results indicates that the Airy surface plasmon not only have characteristics with amplification in near field energy zoom and fast spread, but also can control spread using its characteristics; Airy surface plasmon can control energy loss only in rang width, which cannot appear Airy surface plasmon when its width is less than 600 nm; lasing energy of different width have same trend; Airy surface plasmon can achieve fast spread in the condition of low excitation energy, it has not obvious effect when increase lasing energy after 2.3 eV. There is a positive significance for studying strong localization of SPPs, surface optical processing with SP and linear control SP of no diffraction.