Second harmonic generation in reverse-proton-exchanged waveguides fabricated in periodically-poled stoichiometric lithium tantalate

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Second harmonic generation in reverse-proton-exchanged waveguides fabricated in periodically-poled stoichiometric lithium tantalate

Marangoni, M. / Lobino, M. / Ramponi, R. / Foglietti, V. / Takekawa, S. / Nakamura, M. / Kitamura, K.

In this paper, we will examine second harmonic generation in buried waveguides created through reverse-proton-exchange in periodically-poled stoichiometric lithium tantalate. Waveguides of various widths were fabricated on a 2.5cm long SLT sample provided with 5 poling periods ranging from 17.7 to 18.5/spl mu/m. The fabrication parameters were chosen according to the modelling guidelines recently proposed, in order to obtain single-mode propagation at 1.55/spl mu/m with good fiber mode-matching. The proton-exchange was performed in pure benzoic acid at 280/spl deg/C for 1h 45m, followed by annealing in air at 350/spl deg/C for 3h. The burying step was achieved by a reverse-exchange process involving the immersion of the sample for 25h at 350/spl deg/C in an euthectic melt composed by LiNO/sub 3/, KNO/sub 3/ and NaNO/sub 3/. The nonlinear characterization was performed by measuring the second harmonic generation efficiency as a function of the wavelength.

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Title :

Second harmonic generation in reverse-proton-exchanged waveguides fabricated in periodically-poled stoichiometric lithium tantalate

Contributors:

Marangoni, M. (author) / Lobino, M. (author) / Ramponi, R. (author) / Foglietti, V. (author) / Takekawa, S. (author) / Nakamura, M. (author) / Kitamura, K. (author)

Published in:

CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005. ; 244

Publication date :

2005-01-01

Size :

245334 byte

ISBN :

0-7803-8974-3

DOI :

https://doi.org/10.1109/CLEOE.2005.1568030

Type of media :

Conference paper