Ma Tian-Xue, Zou Kui, Wang Yue-Sheng, Zhang Chuanzeng, Su Xiao-Xing
Opt Express. 2014 Nov 17;22(23):28443-51. doi: 10.1364/OE.22.028443.
Phoxonic crystal is a promising material for manipulating sound and light simultaneously. In this paper, we theoretically demonstrate the propagation of acoustic and optical waves along the truncated surface of a two-dimensional square-latticed phoxonic crystal. Further, a phoxonic crystal hetero-structure cavity is proposed, which can simultaneously confine surface acoustic and optical waves. The interface motion and photoelastic effects are taken into account in the acousto-optical coupling. The results show obvious shifts in eigenfrequencies of the photonic cavity modes induced by different phononic cavity modes. The symmetry of the phononic cavity modes plays a more important role in the single-phonon exchange process than in the case of the multi-phonon exchange. Under the same deformation, the frequency shift of the photonic transverse electric mode is larger than that of the transverse magnetic mode.
声子晶体是一种有望同时操纵声音和光的材料。在本文中，我们从理论上证明了声波和光波沿二维方形晶格声子晶体的截断表面的传播。此外，还提出了一种声子晶体异质结构腔，它可以同时限制表面声波和光波。在声光耦合中考虑了界面运动和光弹效应。结果表明，不同声子腔模式会导致光子腔模式的本征频率发生明显偏移。在单声子交换过程中，声子腔模式的对称性比多声子交换的情况发挥着更重要的作用。在相同变形下，光子横向电模式的频移大于横向磁模式的频移。
