Tailored polarization patterns for performance optimization of optical devices

Abstract

In the case of strong focusing the smallest possible focal spot can be reached, provided one uses a specially designed polarization pattern. Other optical set-ups also employing high numerical aperture imaging are likewise expected to improve performance under polarization optimization. We propose a strategy for calculating the polarization pattern required for system optimization. A single element modulating only the polarization and not amplitude and phase may lead to satisfactory performance in some cases.

Acknowledgment

With great pleasure we acknowledge stimulating discussions with Norbert Lindlein, Silvania Pereira and Ulf Peschel.