Nonorthogonal pairs of copropagating optical modes in deformed microdisk cavities

Wiersig, Jan and Eberspächer, Alexander and Shim, Jeong-Bo and Ryu, Jung-Wan and Shinohara, Sususmu and Hentschel, M. and Schomerus, Henning (2011) Nonorthogonal pairs of copropagating optical modes in deformed microdisk cavities. Physical review a, 84 (2): 023845. ISSN 1050-2947

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Recently, it has been shown that spiral-shaped microdisk cavities support highly nonorthogonal pairs of copropagating modes with a preferred sense of rotation (spatial chirality) [ J. Wiersig et al. Phys. Rev. A 78 053809 (2008)]. Here, we provide numerical evidence which indicates that such pairs are a common feature of deformed microdisk cavities which lack mirror symmetries. In particular, we demonstrate that discontinuities of the cavity boundary such as the notch in the spiral cavity are not needed. We find a quantitative relation between the nonorthogonality and the chirality of the modes which agrees well with the predictions from an effective non-Hermitian Hamiltonian. A comparison to ray-tracing simulations is given.

Item Type:
Journal Article
Journal or Publication Title:
Physical review a
Additional Information:
©2011 American Physical Society
Uncontrolled Keywords:
?? atomic and molecular physics, and optics ??
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Deposited On:
30 Nov 2011 09:58
Last Modified:
12 Apr 2024 00:02