Frequency doubling in surface periodically poled lithium niobate waveguides

Competing effects

Salvatore Stivala, Alessia Pasquazi, Alessandro C. Busacca, Lorenzo Colace, Matteo Cherchi, Antonino Parisi, Alfonso C. Cino, Stefano Riva-Sanseverino, Gaetano Assanto

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

4 Citations (Scopus)

Abstract

We fabricated alpha-phase proton-exchanged (PE) lithium niobate (LN) channel waveguides quasi phase-matched (QPM) via surface periodic poling (SPP) and carried out the first experimental demonstration of second harmonic generation (SHG) in such devices. In order to quantitatively interpret the experimental data, we took into account not only the periodically-poled transverse region providing 1st-order QPM, but also the homogeneously-inverted portion of the waveguides extending below the shallow domains. By a numerical fit of the data we found that, because of the shallow non-inverted domains with depth of the order of 430nm (to be compared with a waveguide depth of 2.6mm), a cascaded process in phase-mismatch gives rise to an effective self-defocusing response which combines with the cubic nonlinearity of the material to provide the measured SHG resonance shift with power.
Original languageEnglish
Title of host publication2007 European Conference on Lasers and Electro-Optics Europe and the International Quantum Electronics Europe
PublisherInstitute of Electrical and Electronic Engineers IEEE
ISBN (Electronic)978-1-4244-0931-0
ISBN (Print)978-1-4244-0930-3
DOIs
Publication statusPublished - 2007
MoE publication typeA4 Article in a conference publication

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lithium niobates
waveguides
harmonic generations
defocusing
nonlinearity
protons
shift

Cite this

Stivala, S., Pasquazi, A., Busacca, A. C., Colace, L., Cherchi, M., Parisi, A., ... Assanto, G. (2007). Frequency doubling in surface periodically poled lithium niobate waveguides: Competing effects. In 2007 European Conference on Lasers and Electro-Optics Europe and the International Quantum Electronics Europe [9846844] Institute of Electrical and Electronic Engineers IEEE. https://doi.org/10.1109/CLEOE-IQEC.2007.4386832
Stivala, Salvatore ; Pasquazi, Alessia ; Busacca, Alessandro C. ; Colace, Lorenzo ; Cherchi, Matteo ; Parisi, Antonino ; Cino, Alfonso C. ; Riva-Sanseverino, Stefano ; Assanto, Gaetano. / Frequency doubling in surface periodically poled lithium niobate waveguides : Competing effects. 2007 European Conference on Lasers and Electro-Optics Europe and the International Quantum Electronics Europe. Institute of Electrical and Electronic Engineers IEEE, 2007.
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title = "Frequency doubling in surface periodically poled lithium niobate waveguides: Competing effects",
abstract = "We fabricated alpha-phase proton-exchanged (PE) lithium niobate (LN) channel waveguides quasi phase-matched (QPM) via surface periodic poling (SPP) and carried out the first experimental demonstration of second harmonic generation (SHG) in such devices. In order to quantitatively interpret the experimental data, we took into account not only the periodically-poled transverse region providing 1st-order QPM, but also the homogeneously-inverted portion of the waveguides extending below the shallow domains. By a numerical fit of the data we found that, because of the shallow non-inverted domains with depth of the order of 430nm (to be compared with a waveguide depth of 2.6mm), a cascaded process in phase-mismatch gives rise to an effective self-defocusing response which combines with the cubic nonlinearity of the material to provide the measured SHG resonance shift with power.",
author = "Salvatore Stivala and Alessia Pasquazi and Busacca, {Alessandro C.} and Lorenzo Colace and Matteo Cherchi and Antonino Parisi and Cino, {Alfonso C.} and Stefano Riva-Sanseverino and Gaetano Assanto",
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Stivala, S, Pasquazi, A, Busacca, AC, Colace, L, Cherchi, M, Parisi, A, Cino, AC, Riva-Sanseverino, S & Assanto, G 2007, Frequency doubling in surface periodically poled lithium niobate waveguides: Competing effects. in 2007 European Conference on Lasers and Electro-Optics Europe and the International Quantum Electronics Europe., 9846844, Institute of Electrical and Electronic Engineers IEEE. https://doi.org/10.1109/CLEOE-IQEC.2007.4386832

Frequency doubling in surface periodically poled lithium niobate waveguides : Competing effects. / Stivala, Salvatore; Pasquazi, Alessia; Busacca, Alessandro C.; Colace, Lorenzo; Cherchi, Matteo; Parisi, Antonino; Cino, Alfonso C.; Riva-Sanseverino, Stefano; Assanto, Gaetano.

2007 European Conference on Lasers and Electro-Optics Europe and the International Quantum Electronics Europe. Institute of Electrical and Electronic Engineers IEEE, 2007. 9846844.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

TY - GEN

T1 - Frequency doubling in surface periodically poled lithium niobate waveguides

T2 - Competing effects

AU - Stivala, Salvatore

AU - Pasquazi, Alessia

AU - Busacca, Alessandro C.

AU - Colace, Lorenzo

AU - Cherchi, Matteo

AU - Parisi, Antonino

AU - Cino, Alfonso C.

AU - Riva-Sanseverino, Stefano

AU - Assanto, Gaetano

PY - 2007

Y1 - 2007

N2 - We fabricated alpha-phase proton-exchanged (PE) lithium niobate (LN) channel waveguides quasi phase-matched (QPM) via surface periodic poling (SPP) and carried out the first experimental demonstration of second harmonic generation (SHG) in such devices. In order to quantitatively interpret the experimental data, we took into account not only the periodically-poled transverse region providing 1st-order QPM, but also the homogeneously-inverted portion of the waveguides extending below the shallow domains. By a numerical fit of the data we found that, because of the shallow non-inverted domains with depth of the order of 430nm (to be compared with a waveguide depth of 2.6mm), a cascaded process in phase-mismatch gives rise to an effective self-defocusing response which combines with the cubic nonlinearity of the material to provide the measured SHG resonance shift with power.

AB - We fabricated alpha-phase proton-exchanged (PE) lithium niobate (LN) channel waveguides quasi phase-matched (QPM) via surface periodic poling (SPP) and carried out the first experimental demonstration of second harmonic generation (SHG) in such devices. In order to quantitatively interpret the experimental data, we took into account not only the periodically-poled transverse region providing 1st-order QPM, but also the homogeneously-inverted portion of the waveguides extending below the shallow domains. By a numerical fit of the data we found that, because of the shallow non-inverted domains with depth of the order of 430nm (to be compared with a waveguide depth of 2.6mm), a cascaded process in phase-mismatch gives rise to an effective self-defocusing response which combines with the cubic nonlinearity of the material to provide the measured SHG resonance shift with power.

U2 - 10.1109/CLEOE-IQEC.2007.4386832

DO - 10.1109/CLEOE-IQEC.2007.4386832

M3 - Conference article in proceedings

SN - 978-1-4244-0930-3

BT - 2007 European Conference on Lasers and Electro-Optics Europe and the International Quantum Electronics Europe

PB - Institute of Electrical and Electronic Engineers IEEE

ER -

Stivala S, Pasquazi A, Busacca AC, Colace L, Cherchi M, Parisi A et al. Frequency doubling in surface periodically poled lithium niobate waveguides: Competing effects. In 2007 European Conference on Lasers and Electro-Optics Europe and the International Quantum Electronics Europe. Institute of Electrical and Electronic Engineers IEEE. 2007. 9846844 https://doi.org/10.1109/CLEOE-IQEC.2007.4386832