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Investigation of PPLN waveguide uniformity via second harmonic generation spectra

Investigation of PPLN waveguide uniformity via second harmonic generation spectra
Investigation of PPLN waveguide uniformity via second harmonic generation spectra
Experimental data collection methods and a corresponding numerical model are presented to investigate the quality of waveguide fabrication in nonlinear optics. The method utilises white light interferometry and standard image recognition techniques to calculate a waveguide propagation constant function. This enables comparison of a numerical second harmonic spectrum in quasi-phasematched materials, such as periodically poled lithium niobate, with the waveguide’s experimental phase-matching spectrum. Using the presented method, a 3rd order polynomial fit to waveguide ridge width is demonstrated to be in good agreement with experimental phasematching spectra. The presented technique provides a nondestructive route to discriminate between issues in fabrication steps in nonlinear waveguide design.
1041-1135
63-66
Gray, Alan Ciaran
fa9f2fca-7e1f-4245-a914-13f18ca5ce89
Carpenter, Lewis Glynn
0daa548e-0d42-4b06-b914-45bfbec41759
Berry, Sam
0f768f48-36c4-4599-8917-7aae657378a7
Gates, James
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Smith, Peter G R
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Gawith, Corin
926665c0-84c7-4a1d-ae19-ee6d7d14c43e
Gray, Alan Ciaran
fa9f2fca-7e1f-4245-a914-13f18ca5ce89
Carpenter, Lewis Glynn
0daa548e-0d42-4b06-b914-45bfbec41759
Berry, Sam
0f768f48-36c4-4599-8917-7aae657378a7
Gates, James
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Smith, Peter G R
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Gawith, Corin
926665c0-84c7-4a1d-ae19-ee6d7d14c43e

Gray, Alan Ciaran, Carpenter, Lewis Glynn, Berry, Sam, Gates, James, Smith, Peter G R and Gawith, Corin (2020) Investigation of PPLN waveguide uniformity via second harmonic generation spectra. IEEE Photonics Technology Letters, 32 (1), 63-66. (doi:10.1109/LPT.2019.2957199).

Record type: Article

Abstract

Experimental data collection methods and a corresponding numerical model are presented to investigate the quality of waveguide fabrication in nonlinear optics. The method utilises white light interferometry and standard image recognition techniques to calculate a waveguide propagation constant function. This enables comparison of a numerical second harmonic spectrum in quasi-phasematched materials, such as periodically poled lithium niobate, with the waveguide’s experimental phase-matching spectrum. Using the presented method, a 3rd order polynomial fit to waveguide ridge width is demonstrated to be in good agreement with experimental phasematching spectra. The presented technique provides a nondestructive route to discriminate between issues in fabrication steps in nonlinear waveguide design.

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A Gray Investigation of PPLN - Accepted Manuscript
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More information

Accepted/In Press date: 28 November 2019
e-pub ahead of print date: 2 December 2019
Published date: 1 January 2020

Identifiers

Local EPrints ID: 436830
URI: http://eprints.soton.ac.uk/id/eprint/436830
ISSN: 1041-1135
PURE UUID: 8f28ca21-59db-4330-9e09-b7876017bbd2
ORCID for Sam Berry: ORCID iD orcid.org/0000-0002-9538-8655
ORCID for James Gates: ORCID iD orcid.org/0000-0001-8671-5987
ORCID for Peter G R Smith: ORCID iD orcid.org/0000-0003-0319-718X
ORCID for Corin Gawith: ORCID iD orcid.org/0000-0002-3502-3558

Catalogue record

Date deposited: 10 Jan 2020 17:34
Last modified: 18 Feb 2021 16:56

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