We demonstrate orbital-angular momentum (OAM) light up to a topological charge of l$=$3 behind a single mode fiber. Femtosecond 3D direct laser writing is used to fabricate spiral phase plates of l$=$1,2 and 3, composed of 10 discrete steps, on the tip of single mode optical fibers. These structures efficiently convert out-coupled light from the fiber at 785&\#x2009;nm wavelength into optical vortex beams carrying an orbital-angular momentum of l&\#x210F;per photon. Far field intensity patterns and interferograms of the OAM beams are recorded using a CCD camera. The results are in excellent agreement with numerical simulations obtained from the wave propagation method.
%0 Journal Article
%1 weber2017single
%A Weber, Ksenia
%A Hütt, Felix
%A Thiele, Simon
%A Gissibl, Timo
%A Herkommer, Alois
%A Giessen, Harald
%D 2017
%I OSA
%J Opt. Express
%K 2017 access fonds oa open stuttgart uni
%N 17
%P 19672--19679
%R 10.1364/OE.25.019672
%T Single mode fiber based delivery of OAM light by 3D direct laser writing
%U http://www.opticsexpress.org/abstract.cfm?URI=oe-25-17-19672
%V 25
%X We demonstrate orbital-angular momentum (OAM) light up to a topological charge of l$=$3 behind a single mode fiber. Femtosecond 3D direct laser writing is used to fabricate spiral phase plates of l$=$1,2 and 3, composed of 10 discrete steps, on the tip of single mode optical fibers. These structures efficiently convert out-coupled light from the fiber at 785&\#x2009;nm wavelength into optical vortex beams carrying an orbital-angular momentum of l&\#x210F;per photon. Far field intensity patterns and interferograms of the OAM beams are recorded using a CCD camera. The results are in excellent agreement with numerical simulations obtained from the wave propagation method.
@article{weber2017single,
abstract = {We demonstrate orbital-angular momentum (OAM) light up to a topological charge of l$=$3 behind a single mode fiber. Femtosecond 3D direct laser writing is used to fabricate spiral phase plates of l$=$1,2 and 3, composed of 10 discrete steps, on the tip of single mode optical fibers. These structures efficiently convert out-coupled light from the fiber at 785\&\#x2009;nm wavelength into optical vortex beams carrying an orbital-angular momentum of l\&\#x210F;per photon. Far field intensity patterns and interferograms of the OAM beams are recorded using a CCD camera. The results are in excellent agreement with numerical simulations obtained from the wave propagation method.},
added-at = {2018-04-22T14:35:37.000+0200},
author = {Weber, Ksenia and H\"{u}tt, Felix and Thiele, Simon and Gissibl, Timo and Herkommer, Alois and Giessen, Harald},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/29ad78e201cacf4f97a180bc3213a68d7/droessler},
doi = {10.1364/OE.25.019672},
interhash = {dad04563b40d6150d1554b534730f33c},
intrahash = {9ad78e201cacf4f97a180bc3213a68d7},
journal = {Opt. Express},
keywords = {2017 access fonds oa open stuttgart uni},
month = aug,
number = 17,
pages = {19672--19679},
publisher = {OSA},
timestamp = {2018-04-22T12:35:37.000+0200},
title = {Single mode fiber based delivery of OAM light by 3D direct laser writing},
url = {http://www.opticsexpress.org/abstract.cfm?URI=oe-25-17-19672},
volume = 25,
year = 2017
}
