%0 Journal Article %1 Dorn2003Sharper %A Dorn, R. %A Quabis, S. %A Leuchs, G. %D 2003 %I American Physical Society %J Physical Review Letters %K omagnus, optics %N 23 %P 233901+ %R 10.1103/physrevlett.91.233901 %T Sharper Focus for a Radially Polarized Light Beam %U http://dx.doi.org/10.1103/physrevlett.91.233901 %V 91 %X We experimentally demonstrate for the first time that a radially polarized field can be focused to a spot size significantly smaller 0.16(1)λ2 than for linear polarization (0.26λ2). 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.

@article{Dorn2003Sharper, 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)λ2] than for linear polarization (0.26λ2). 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.}}, added-at = {2019-02-26T15:22:34.000+0100}, author = {Dorn, R. and Quabis, S. and Leuchs, G.}, biburl = {https://www.bibsonomy.org/bibtex/2114af4d63cf642f152417a00b8147e14/rspreeuw}, citeulike-article-id = {1193351}, citeulike-linkout-0 = {http://dx.doi.org/10.1103/physrevlett.91.233901}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v91/i23/e233901}, citeulike-linkout-2 = {http://link.aps.org/pdf/PRL/v91/i23/e233901}, day = 2, doi = {10.1103/physrevlett.91.233901}, interhash = {ad580a1126453e0840879e227ea36acb}, intrahash = {114af4d63cf642f152417a00b8147e14}, journal = {Physical Review Letters}, keywords = {omagnus, optics}, month = dec, number = 23, pages = {233901+}, posted-at = {2013-01-09 14:02:11}, priority = {2}, publisher = {American Physical Society}, timestamp = {2019-02-26T15:22:34.000+0100}, title = {{Sharper Focus for a Radially Polarized Light Beam}}, url = {http://dx.doi.org/10.1103/physrevlett.91.233901}, volume = 91, year = 2003 }