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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.