Optical properties of lithium gallium oxide

S. Tumėnas; P. Mackonis; R. Nedzinskas; L. Trinkler; B. Berzina; V. Korsaks; L. Chang; M. M.C. Chou

doi:10.1016/j.apsusc.2017.01.098

Optical properties of lithium gallium oxide

S. Tumėnas^*
, P. Mackonis
, R. Nedzinskas
, L. Trinkler
, B. Berzina
, V. Korsaks
, L. Chang
, M. M.C. Chou

^*Corresponding author for this work

Laboratory of Spectroscopy, Institute of Solid State Physics

Center for Physical Sciences and Technology
National Sun Yat-sen University

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

The optical dielectric function tensor of orthorhombic single-crystal LiGaO ₂ was determined for polarizations along a, b, and c crystal-axis in the photon energy range from 0.04 eV to 6.5 eV by the generalized spectroscopic ellipsometry. In the far-infrared spectral range from 12.4 meV to 40 meV, the dielectric function was determined from conventional polarized transmittance and polarized reflectance measurements. Lineshape analysis of the dielectric function tensor major components allowed for a determination of the long-wavelength optical phonon characteristics, refractive indices dispersion, and parameters of interband and excitonic optical transitions.

Original language	English
Pages (from-to)	837-842
Number of pages	6
Journal	Applied Surface Science
Volume	421
DOIs	https://doi.org/10.1016/j.apsusc.2017.01.098
Publication status	Published - 1 Nov 2017

Keywords

Dielectric function
Interband transitions
Lithium gallate
Phonon modes

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10.1016/j.apsusc.2017.01.098

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title = "Optical properties of lithium gallium oxide",

abstract = " The optical dielectric function tensor of orthorhombic single-crystal LiGaO 2 was determined for polarizations along a, b, and c crystal-axis in the photon energy range from 0.04 eV to 6.5 eV by the generalized spectroscopic ellipsometry. In the far-infrared spectral range from 12.4 meV to 40 meV, the dielectric function was determined from conventional polarized transmittance and polarized reflectance measurements. Lineshape analysis of the dielectric function tensor major components allowed for a determination of the long-wavelength optical phonon characteristics, refractive indices dispersion, and parameters of interband and excitonic optical transitions.",

keywords = "Dielectric function, Interband transitions, Lithium gallate, Phonon modes",

author = "S. Tumėnas and P. Mackonis and R. Nedzinskas and L. Trinkler and B. Berzina and V. Korsaks and L. Chang and Chou, \{M. M.C.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

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doi = "10.1016/j.apsusc.2017.01.098",

language = "English",

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journal = "Applied Surface Science",

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TY - JOUR

T1 - Optical properties of lithium gallium oxide

AU - Tumėnas, S.

AU - Mackonis, P.

AU - Nedzinskas, R.

AU - Trinkler, L.

AU - Berzina, B.

AU - Korsaks, V.

AU - Chang, L.

AU - Chou, M. M.C.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - The optical dielectric function tensor of orthorhombic single-crystal LiGaO 2 was determined for polarizations along a, b, and c crystal-axis in the photon energy range from 0.04 eV to 6.5 eV by the generalized spectroscopic ellipsometry. In the far-infrared spectral range from 12.4 meV to 40 meV, the dielectric function was determined from conventional polarized transmittance and polarized reflectance measurements. Lineshape analysis of the dielectric function tensor major components allowed for a determination of the long-wavelength optical phonon characteristics, refractive indices dispersion, and parameters of interband and excitonic optical transitions.

AB - The optical dielectric function tensor of orthorhombic single-crystal LiGaO 2 was determined for polarizations along a, b, and c crystal-axis in the photon energy range from 0.04 eV to 6.5 eV by the generalized spectroscopic ellipsometry. In the far-infrared spectral range from 12.4 meV to 40 meV, the dielectric function was determined from conventional polarized transmittance and polarized reflectance measurements. Lineshape analysis of the dielectric function tensor major components allowed for a determination of the long-wavelength optical phonon characteristics, refractive indices dispersion, and parameters of interband and excitonic optical transitions.

KW - Dielectric function

KW - Interband transitions

KW - Lithium gallate

KW - Phonon modes

UR - https://www.scopus.com/pages/publications/85009789235

U2 - 10.1016/j.apsusc.2017.01.098

DO - 10.1016/j.apsusc.2017.01.098

M3 - Article

AN - SCOPUS:85009789235

SN - 0169-4332

VL - 421

SP - 837

EP - 842

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Optical properties of lithium gallium oxide

Abstract

Keywords

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