Share Email Print
cover

Proceedings Paper

Reduction of the spot size by using a radially polarized laser beam
Author(s): Susanne Quabis; Ralf Dorn; O. Gloeckl; M. Reichle; Manfred Eberler
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We present numerical calculations on the field distribution in the focus of an optical system with high numerical aperture. It is shown that a radially polarized doughnut mode fits the symmetry of the optical system and focuses down to spot sizes significantly smaller as compared to the case of linear polarization. An experimental setup to generate a radially polarized beam is presented along with a setup which is based on the knife edge method and tomographic reconstruction to measure the 3D intensity distribution in the focal region.

Paper Details

Date Published: 30 May 2001
PDF: 7 pages
Proc. SPIE 4429, International Seminar on Novel Trends in Nonlinear Laser Spectroscopy and High-Precision Measurements in Optics, (30 May 2001); doi: 10.1117/12.428336
Show Author Affiliations
Susanne Quabis, Univ. Erlangen-Nuernberg (Germany)
Ralf Dorn, Univ. Erlangen-Nuernberg (Germany)
O. Gloeckl, Univ. Erlangen-Nuernberg (Germany)
M. Reichle, Univ. Erlangen-Nuernberg (Germany)
Manfred Eberler, Univ. Erlangen-Nuernberg (Germany)


Published in SPIE Proceedings Vol. 4429:
International Seminar on Novel Trends in Nonlinear Laser Spectroscopy and High-Precision Measurements in Optics
Sergei N. Bagaev; Victor N. Zadkov; Sergei M. Arakelian, Editor(s)

© SPIE. Terms of Use
Back to Top