Quasi-phase-matched NLO waveguides using periodically corona-poled liquid crystalline polymers

Gerd Priebe; Kai Kunze; Florian Kentischer; R. Schulz; O. Morales; Rainer Macdonald; Hans Joachim Eichler

doi:10.1117/12.405317

24 October 2000 Quasi-phase-matched NLO waveguides using periodically corona-poled liquid crystalline polymers

Gerd Priebe, Kai Kunze, Florian Kentischer, R. Schulz, O. Morales, Rainer Macdonald, Hans Joachim Eichler

Proceedings Volume 4107, Liquid Crystals IV; (2000) https://doi.org/10.1117/12.405317
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Quasi-phasematched (QPM) Second Harmonic Generation (SHG) in poled polymer waveguides has been realized. Rib-waveguide devices were fabricated by lithographic techniques like multilayer spin coating and reactive ion etching, well known from semiconductor technology. Guest-host-systems [Cyanobiphenyl-Polymethylmethacrylat (CN-PMMA)] as well as co-polymers have been used as the NLO-waveguiding layer between Perfluorcyclobutane (PFCB) layers acting as lower refractive index claddings. Cut-off experiments yield waveguide losses of 3 dB/cm and endfire coupling losses of 3 - 5 dB. The QPM-period has been determined experimentally to (Lambda) approximately equals 20 micrometer for a 4 micrometer wide Rib- waveguide by recording Maker fringes. Periodically poled waveguides were realized using Corona poling in combination with corrugated surfaces. The period (Lambda) of the poling structure was varied continuously between 15 micrometer and 30 micrometer using a fan-shaped corrugation structure. SHG tuning curves exhibit a relative acceptance bandwidth of 3.7 times 10^-3 which indicates an effective interaction length l_eff over the full waveguide length of 4 mm.

Citation Download Citation

Gerd Priebe, Kai Kunze, Florian Kentischer, R. Schulz, O. Morales, Rainer Macdonald, and Hans Joachim Eichler "Quasi-phase-matched NLO waveguides using periodically corona-poled liquid crystalline polymers", Proc. SPIE 4107, Liquid Crystals IV, (24 October 2000); https://doi.org/10.1117/12.405317

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