@article{SchaalRutlohWeidenfeldetal.2018,
  author    = {Schaal, Frederik and Rutloh, Michael and Weidenfeld, Susanne and Stumpe, Joachim and Michler, Peter and Pruss, Christof and Osten, Wolfgang},
  title     = {Optically addressed modulator for tunable spatial polarization control},
  series = {Optics express : the international electronic journal of optics},
  volume    = {26},
  journal   = {Optics express : the international electronic journal of optics},
  number    = {21},
  publisher = {Optical Society of America},
  address   = {Washington},
  issn      = {1094-4087},
  doi       = {10.1364/OE.26.028119},
  pages     = {28119 -- 28130},
  year      = {2018},
  abstract  = {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},
  language  = {en}
}
@misc{SchaalRutlohWeidenfeldetal.2018,
  author    = {Schaal, Frederik and Rutloh, Michael and Weidenfeld, Susanne and Stumpe, Joachim and Michler, Peter and Pruss, Christof and Osten, Wolfgang},
  title     = {Optically addressed modulator for tunable spatial polarization control},
  series = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Mathematisch-Naturwissenschaftliche Reihe},
  number    = {1001},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-44626},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-446263},
  pages     = {28119 -- 28130},
  year      = {2018},
  abstract  = {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},
  language  = {en}
}
@article{StumpeSakhnoGritsaietal.2014,
  author    = {Stumpe, Joachim and Sakhno, O. and Gritsai, Y. and Rosenhauer, R. and Fischer, Th. and Rutloh, Michael and Schaal, F. and Weidenfeld, S. and Jetter, M. and Michler, P. and Pruss, C. and Osten, W.},
  title     = {Active and passive LC based polarization elements},
  series = {Molecular crystals and liquid crystals},
  volume    = {594},
  journal   = {Molecular crystals and liquid crystals},
  number    = {1},
  publisher = {Routledge, Taylor \& Francis Group},
  address   = {Abingdon},
  issn      = {1542-1406},
  doi       = {10.1080/15421406.2014.917503},
  pages     = {140 -- 149},
  year      = {2014},
  abstract  = {Passive and active polarization elements were created by surface and bulk photo-alignment of LCs, reactive LCs, photo-sensitive LCP and photo-curable monomer/LC composites. The use of different photo-sensitive liquid crystalline materials for the development of highly anisotropic elements with high spatial resolution and stability or, alternatively, fast switch ability will be discussed. Photo-active and voltage tunable polarization and diffraction elements are presented. For active micro-optic application a photo-addressed patterned retarder was created. Electrically switchable diffraction gratings were generated by interference exposure of photo-curable LC composites at room temperature characterized by droplet free morphology. These polarization sensitive diffraction elements are characterized be excellent optical properties and low switching times.},
  language  = {en}
}