Tailored polarization can lead to a smaller focal spot in high numerical aperture focusing. The same radial polarization mode maximizes the coupling to an atom when using the correct 4π geometry.
© 2007 Optical Society of America
G. Leuchs, H. Konermann, R. Maiwald, M. Sondermann, S. Quabis, N. Lindlein, and U. Peschel, "Polarization Optimized 4-π Geometries for Microscopy," in Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, OSA Technical Digest (CD) (Optical Society of America, 2007), paper FThM1.
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