Format

Send to

Choose Destination
Phys Rev Lett. 2003 Dec 5;91(23):233901. Epub 2003 Dec 2.

Sharper focus for a radially polarized light beam.

Author information

1
Max-Planck-Research-Group for Optics, Information and Photonics, Universität Erlangen-Nürnberg, D-91058 Erlangen, Germany.

Abstract

We experimentally demonstrate for the first time that a radially polarized field can be focused to a spot size significantly smaller [0.16(1)lambda(2)] than for linear polarization (0.26lambda(2)). The effect of the vector properties of light is shown by a comparison of the focal intensity distribution for radially and azimuthally polarized input fields. For strong focusing, a radially polarized field leads to a longitudinal electric field component at the focus which is sharp and centered at the optical axis. The relative contribution of this component is enhanced by using an annular aperture.

Supplemental Content

Full text links

Icon for American Physical Society
Loading ...
Support Center