Evidence map›Paper›PMID 30705314›Full record

ArticleScientific reports2019

On the origin of second harmonic generation in silicon waveguides with silicon nitride cladding.

Claudio Castellan, Alessandro Trenti, Chiara Vecchi, Alessandro Marchesini, Mattia Mancinelli, Mher Ghulinyan, Georg Pucker, Lorenzo Pavesi

Abstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Claudio CastellanNanoscience Laboratory, Department of Physics, University of Trento, via Sommarive 14, Trento, 38123, Italy. claudio.castellan@unitn.it.ORCID http://orcid.org/0000-0003-4769-7960
Alessandro TrentiNanoscience Laboratory, Department of Physics, University of Trento, via Sommarive 14, Trento, 38123, Italy.
Chiara VecchiNanoscience Laboratory, Department of Physics, University of Trento, via Sommarive 14, Trento, 38123, Italy.
Alessandro MarchesiniNanoscience Laboratory, Department of Physics, University of Trento, via Sommarive 14, Trento, 38123, Italy.
Mattia MancinelliNanoscience Laboratory, Department of Physics, University of Trento, via Sommarive 14, Trento, 38123, Italy.
Mher GhulinyanCentre for Materials and Microsystems, Fondazione Bruno Kessler, via Sommarive 18, Trento, 38123, Italy.ORCID http://orcid.org/0000-0001-6893-9813
Georg PuckerCentre for Materials and Microsystems, Fondazione Bruno Kessler, via Sommarive 18, Trento, 38123, Italy.
Lorenzo PavesiNanoscience Laboratory, Department of Physics, University of Trento, via Sommarive 14, Trento, 38123, Italy.ORCID http://orcid.org/0000-0001-7316-6034

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Strained silicon waveguides have been proposed to break the silicon centrosymmetry, which inhibits second-order nonlinearities. Even if electro-optic effect and second harmonic generation (SHG) were measured, the published results presented plenty of ambiguities due to the concurrence of different effects affecting the process. In this work, the origin of SHG in a silicon waveguide strained by a silicon nitride cladding is investigated in detail. From the measured SHG efficiencies, an effective second-order nonlinear susceptibility of ~0.5 pmV

Identifiers

PMID30705314
PMCPMC6355935

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