23 February 2006 Geometric optics of whispering gallery modes
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Quasiclassical approach and geometric optics allow to describe rather accurately whispering gallery modes in convex axisymmetric bodies. Using this approach we obtain practical formulas for the calculation of eigenfrequencies and radiative Q-factors in dielectrical spheroid and compare them with the known solutions for the particular cases and with numerical calculations. We show how geometrical interpretation allows expansion of the method on arbitrary shaped axisymmetric bodies.
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Michael L. Gorodetsky, Michael L. Gorodetsky, Aleksey E. Fomin, Aleksey E. Fomin, } "Geometric optics of whispering gallery modes", Proc. SPIE 6101, Laser Beam Control and Applications, 61010X (23 February 2006); doi: 10.1117/12.669591; https://doi.org/10.1117/12.669591

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