Waveguides in Ti:LiNbO3 for second-harmonic generation: design and experimental tests

Roberta Ramponi; Vera Russo; Vittorio C. Magni; Luca Palchetti; Roberto Osellame; Margherita Zavelani-Rossi

doi:10.1117/12.262443

20 December 1996 Waveguides in Ti:LiNbO₃ for second-harmonic generation: design and experimental tests

Roberta Ramponi, Vera Russo, Vittorio C. Magni, Luca Palchetti, Roberto Osellame, Margherita Zavelani-Rossi

Proceedings Volume 2954, Fiber Integrated Optics; (1996) https://doi.org/10.1117/12.262443
Event: Advanced Imaging and Network Technologies, 1996, Berlin, Germany

Abstract

Second harmonic (SH) generation in optical waveguides is widely studied for its many applications. In order to obtain efficient non-linear phenomena in waveguides, it is very important that the optico-physical characteristics of the fabricated waveguides are exactly those foreseen in the project. This because in practical applications operation wavelength and temperature can rarely be adjusted to achieve phase-matching conditions. The present work describes a model that, one fixed the operation conditions, finds the optico-physical characteristics of Ti:LiNbO₃ planar waveguides necessary to obtain SH generation and relates them to the fabrication parameters. Phase-matching conditions between the two interacting guided modes (fundamental and SH) are achieved by exploiting the material birefringence. The investigation is performed at a fundamental wavelength of 1.064 micrometers and at room temperature on Y-cut, X-propagation waveguides. The waveguides, fabricated according to our design, were then characterized at different wavelengths. Experimental tests of SH generation confirmed the goodness of the model proposed.

Citation Download Citation

Roberta Ramponi, Vera Russo, Vittorio C. Magni, Luca Palchetti, Roberto Osellame, and Margherita Zavelani-Rossi "Waveguides in Ti:LiNbO₃ for second-harmonic generation: design and experimental tests", Proc. SPIE 2954, Fiber Integrated Optics, (20 December 1996); https://doi.org/10.1117/12.262443

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