Focal Properties of Planar Curvilinear Mirrors Applied to Hydrodynamic Soliton Analysis

Details Focal Properties of Planar Curvilinear Mirrors Applied to Hydrodynamic Soliton Analysis Focal Properties of Planar Curvilinear Mirrors Applied to Hydrodynamic Soliton Analysis

2011-10-23

arxiv.org/abs/1110.5056v1

Physics

Optics

14 pages, 9 figures

Scientific paper

The free surface of hydrodynamic waves behaves as a time-varying planar curvilinear mirror, whose focal properties determine the light intensity distribution in a reflected light beam. Variational criteria for determination of foci of planar curvilinear mirrors illuminated by a coplanar light source are studied in the realm of Geometric Optics. Intrinsic functions of the optical setup (called focal potentials in the text) which are stationary at mirror points corresponding to cusp points of the caustic of reflected light rays are analyzed. The eccentricity of the osculating conic defined at each mirror point is shown to be a dimensionless, coordinate independent focal potential. An application to numerical analysis of light focusing by laser-illuminated hydrodynamic solitons is presented. OCIS codes: 080.0080 (Geometric Optics) 110.0110 (Imaging Systems) PACS code: 47.35.Fg (Solitons in Fluids)

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