Artificial wave plates made from sub-wavelength structures
- 1Institute of Optics, Information and Photonics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 2Max-Planck-Institut für die Physik des Lichts, Max Planck Institute for the Science of Light
sergey [dot] dmitriev [at] physik [dot] uni-erlangen [dot] de
Current and finished studies on the fabrication of polarisation elements made from Si3N4 sub-wavelength gratings will be presented. The form birefringence of a dielectric material is achieved by structuring the surface in the nano meter range. The structure of the presented half wave plates is based on sub-wavelength gratings with period 300 nm. The depth and the duty cycle are optimised to introduce a retardation of π to light at a wavelength of 633nm. The design of a radial polariser is based on sub-wavelength silicon nitride structures introducing a retardation of π, with a space variant orientation of the optical axis. The first results of a transformation of linear polarised light into a radial polarised one will be shown.
@inproceedings{dmitriev2012p16,
author = {Dmitriev, Sergey and Harder, Irina and Lindlein, Norbert},
title = {{Artificial wave plates made from sub-wavelength structures}},
booktitle = {DGaO-Proceedings 2012},
series = {DGaO-Proceedings},
eventtitle = {113. Jahrestagung der DGaO},
eventdate = {2012-05-30/2012-06-02},
venue = {Eindhoven},
publisher = {Deutsche Gesellschaft für angewandte Optik e.V.},
year = {2012},
pages = {P16},
langid = {english},
url = {https://dgao-proceedings.de/paper/113-p16}
}