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Cited by 138Photorefractive and Nonlinear OpticsFerroelectric and Piezoelectric MaterialsCrystal Structures and Properties

Raman scattering efficiency inLiTaO3andLiNbO3crystals

Sanna, S., Neufeld, S., Rüsing, M., Berth, G., Zrenner, A., Schmidt, W. G.·2015·Physical Review B
DOI 10.1103/physrevb.91.224302
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Abstract

${\mathrm{LiTaO}}_{3}$ and ${\mathrm{LiNbO}}_{3}$ crystals are investigated here in a combined experimental and theoretical study that uses Raman spectroscopy in a complete set of scattering geometries and corresponding density-functional theory calculations to provide microscopic information on their vibrational properties. The Raman scattering efficiency is computed from first principles in order to univocally assign the measured Raman peaks to the calculated eigenvectors. Measured and calculated Raman spectra are shown to be in qualitative agreement and confirm the mode assignment by Margueron et al. [J. Appl. Phys. 111, 104105 (2012)], thus finally settling a long debate. While the two crystals show rather similar vibrational properties overall, the ${\text{E-TO}}_{9}$ mode is markedly different in the two oxides. The deviations are explained by a different anion-cation bond type in ${\mathrm{LiTaO}}_{3}$ and ${\mathrm{LiNbO}}_{3}$ crystals.

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Crossref · 10.1103/physrevb.91.224302

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  • Recent measurements suggest charge carrier effects are stronger in LNOI than in comparable bulk devices, possibly due to tighter optical confinement and higher crystal defect concentration in LNOI.

    “Recent measurements [183,342,457,458] suggest that these effects are stronger in LNOI than in comparable bulk devices, possibly due to the tighter optical confinement and higher crystal defect concentration in LNOI.”

    From Integrated photonics on thin-film lithium niobate (2021) · cites this paper as [342]

  • Efforts to reduce photorefractive effects in LNOI have shown that photorefractive shifts can be reduced by annealing and using uncladded waveguides.

    “Efforts to reduce photorefractive effects in LNOI have shown that photorefractive shifts can be reduced by annealing and using uncladded waveguides [342], but further work is required to understand the impact of material properties and device geometry on photorefraction in LNOI devices.”

    From Integrated photonics on thin-film lithium niobate (2021) · cites this paper as [342]

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Authors
Sanna, S., Neufeld, S., Rüsing, M., Berth, G., Zrenner, A., & Schmidt, W. G.
Affiliations
Paderborn University (DE)
ORCID
Venue
Physical Review B
Publisher
American Physical Society (APS)
Published
2015-06-05
Volume
91
Issue
22
ISSN
  • 1098-0121 (ISSN-L)
  • 1550-235X
DOI
10.1103/physrevb.91.224302
OpenAlex
W2567206267
Cited by
138
References
44
Citations by year
2026: 13 · 2025: 13 · 2024: 17 · 2023: 17 · 2022: 12 · 2021: 18 · 2020: 14 · 2019: 11 · 2018: 9 · 2017: 6 · 2016: 6 · 2015: 1
FWCI
3.73
Type
journal article
Language
en
Open access
closed
Licence
link.aps.org/licenses/aps-default-license (vor)
Locations
Physical Review B (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photorefractive and Nonlinear Optics
  • Physical Sciences › Materials Science › Materials Chemistry › Ferroelectric and Piezoelectric Materials
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Crystal Structures and Properties
Keywords
Raman scattering efficiency, lithium tantalate, lithium niobate, Raman mode assignment, vibration characteristics, phonon eigenvectors, DFT calculations, Raman spectra

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