TY  - GEN
A1  - Schaal, Frederik
A1  - Rutloh, Michael
A1  - Weidenfeld, Susanne
A1  - Stumpe, Joachim
A1  - Michler, Peter
A1  - Pruss, Christof
A1  - Osten, Wolfgang
T1  - Optically addressed modulator for tunable spatial polarization control
T2  - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - We present an optically addressed non-pixelated spatial light modulator. The system is based on reversible photoalignment of a LC cell using a red light sensitive novel azobenzene photoalignment layer. It is an electrode-free device that manipulates the liquid crystal orientation and consequently the polarization via light without artifacts caused by electrodes. The capability to miniaturize the spatial light modulator allows the integration into a microscope objective. This includes a miniaturized 200 channel optical addressing system based on a VCSEL array and hybrid refractive-diffractive beam shapers. As an application example, the utilization as a microscope objective integrated analog phase contrast modulator is shown. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1001 
KW  - nematic liquid crystals
KW  - command surfaces
KW  - light modulator
KW  - alignment
KW  - films
KW  - polymer
Y1  - 2020
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/44626
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-446263
SN  - 1866-8372
IS  - 1001
SP  - 28119
EP  - 28130
ER  -