arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1102.0895physics.opticsnlin.CD
收藏

点散射介质微盘的迹线公式

Trace formula for a dielectric microdisk with a point scatterer

Robert F. M. Hales, Martin Sieber, Holger Waalkens

摘要:

二维介电微腔在微光学领域有着广泛的应用。最近,建立了介质腔的迹线公式,它把介质腔的谐振谱与腔内的周期性光线联系起来。在本文中,我们将这个迹公式推广到具有小散射体的介质圆盘。由于该系统具有长寿命的远场方向性强的谐振腔,因此已被引入微激光器应用。我们表明,它的共振谱不仅包含周期性光线的签名,但也发生在凯勒的几何衍射理论的衍射射线。我们比较我们的结果与封闭腔Dirichlet边界条件。

英文摘要:

Two-dimensional dielectric microcavities are of widespread use in microoptics applications. Recently, a trace formula has been established for dielectric cavities which relates their resonance spectrum to the periodic rays inside the cavity. In the present paper we extend this trace formula to a dielectric disk with a small scatterer. This system has been introduced for microlaser applications, because it has long-lived resonances with strongly directional far field. We show that its resonance spectrum contains signatures not only of periodic rays, but also of diffractive rays that occur in Keller's geometrical theory of diffraction. We compare our results with those for a closed cavity with Dirichlet boundary conditions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑