TY  - JOUR
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
JF  - Optics express : the international electronic journal of optics
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
Y1  - 2018
U6  - https://doi.org/10.1364/OE.26.028119
SN  - 1094-4087
VL  - 26
IS  - 21
SP  - 28119
EP  - 28130
PB  - Optical Society of America
CY  - Washington
ER  -