Regensburg 2002 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 10: Funktionalisierte Polymere
CPP 10.4: Vortrag
Dienstag, 12. März 2002, 17:10–17:30, H38
Phase-matched second-harmonic generation in a ferrorlectric liquid crystal waveguide — •Valentina Fazio1, Philippe Busson2, Sigurd Schrader3, and Hubert Motschmann1 — 1Max-Plank-Institute of Colloids and Interfaces, 14476 Golm, Germany — 2Dept. of Polymer Technology, Royal Institute of Technology, 10044 Stockholm, Sweden — 3Dept. of Physics, University of Potsdam, 14469 Potsdam, Germany
True phase-matched second-harmonic generation in a waveguide made of crosslinkable ferroelectric liquid crystals is demonstrated. These materials allow the formation of macroscopically polar structures whose order can be frozen by photopolymerization. Homeotropic alignment was chosen which offers decisive advantages compared to other geometries. All parameters contributing to the conversion efficiency are maximized by deliberately controlling the supramolecular arrangement. The system has the potential to achieve practical level of performances as a frequency doubler for low power laser-diodes.