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Modal phase matching in nanostructured zinc-blende semiconductors for second-order nonlinear optical interactions
KTH, School of Engineering Sciences (SCI), Applied Physics, Quantum Electronics and Quantum Optics, QEO.
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics, Laser Physics.
KTH, School of Engineering Sciences (SCI), Applied Physics.
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2017 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 96, no 7, 075303Article in journal (Refereed) Published
Abstract [en]

We demonstrate enhanced second-harmonic generation in arrays of nanowaveguides satisfying modal-phase-matching condition, both theoretically and experimentally. The overlap of interacting fields defined by the fundamental mode of the pump and the second-order mode of the second-harmonic wave is enhanced by the longitudinal component of the nonlinear polarization density. For guided modes with significant longitudinal electric field components, the overlap of fields is comparable to that obtained in the quasi-phase-matching technique leading to higher conversion efficiencies. Thus, the presented method is preferable to achieve higher conversion efficiency in second-order nonlinear processes in nanowaveguides.

Place, publisher, year, edition, pages
American Physical Society, 2017. Vol. 96, no 7, 075303
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URN: urn:nbn:se:kth:diva-212601DOI: 10.1103/PhysRevB.96.075303ISI: 000407015600007OAI: oai:DiVA.org:kth-212601DiVA: diva2:1135869
Funder
Swedish Research Council, 349-2007-8664 621-2013-5811
Note

QC 20170824

Available from: 2017-08-24 Created: 2017-08-24 Last updated: 2017-11-29Bibliographically approved

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De Luca, EleonoraSanatinia, RezaMensi, MounirAnand, SrinivasanSwillo, Marcin
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