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Terahertz permittivity parameters of monoclinic single crystal lutetium oxyorthosilicate

Knight, Sean LU ; Richter, Steffen LU ; Papamichail, Alexis ; Stokey, Megan ; Korlacki, Rafał ; Stanishev, Vallery ; Kühne, Philipp ; Schubert, Mathias LU orcid and Darakchieva, Vanya LU (2024) In Applied Physics Letters 124(3).
Abstract

The anisotropic permittivity parameters of monoclinic single crystal lutetium oxyorthosilicate, Lu2SiO5 (LSO), have been determined in the terahertz spectral range. Using terahertz generalized spectroscopic ellipsometry (THz-GSE), we obtained the THz permittivities along the a, b, and c ⋆ crystal directions, which correspond to the ϵ a , ϵ b , and ϵ c ⋆ on-diagonal tensor elements. The associated off diagonal tensor element ϵ a c ⋆ was also determined experimentally, which is required to describe LSO's optical response in the monoclinic a-c crystallographic plane. From the four tensor elements obtained in the model fit, we calculate the direction of the principal dielectric axes in the a-c plane. We find good... (More)

The anisotropic permittivity parameters of monoclinic single crystal lutetium oxyorthosilicate, Lu2SiO5 (LSO), have been determined in the terahertz spectral range. Using terahertz generalized spectroscopic ellipsometry (THz-GSE), we obtained the THz permittivities along the a, b, and c ⋆ crystal directions, which correspond to the ϵ a , ϵ b , and ϵ c ⋆ on-diagonal tensor elements. The associated off diagonal tensor element ϵ a c ⋆ was also determined experimentally, which is required to describe LSO's optical response in the monoclinic a-c crystallographic plane. From the four tensor elements obtained in the model fit, we calculate the direction of the principal dielectric axes in the a-c plane. We find good agreement when comparing THz-GSE permittivities to the static permittivity tensors from previous infrared and density functional theory studies.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics Letters
volume
124
issue
3
article number
032101
publisher
American Institute of Physics (AIP)
external identifiers
  • scopus:85182730244
ISSN
0003-6951
DOI
10.1063/5.0177304
language
English
LU publication?
yes
id
2de68d54-a366-44c8-bce3-a2f4c8bb93d9
date added to LUP
2024-02-23 11:16:01
date last changed
2024-02-23 11:17:12
@article{2de68d54-a366-44c8-bce3-a2f4c8bb93d9,
  abstract     = {{<p>The anisotropic permittivity parameters of monoclinic single crystal lutetium oxyorthosilicate, Lu<sub>2</sub>SiO<sub>5</sub> (LSO), have been determined in the terahertz spectral range. Using terahertz generalized spectroscopic ellipsometry (THz-GSE), we obtained the THz permittivities along the a, b, and c ⋆ crystal directions, which correspond to the ϵ a , ϵ b , and ϵ c ⋆ on-diagonal tensor elements. The associated off diagonal tensor element ϵ a c ⋆ was also determined experimentally, which is required to describe LSO's optical response in the monoclinic a-c crystallographic plane. From the four tensor elements obtained in the model fit, we calculate the direction of the principal dielectric axes in the a-c plane. We find good agreement when comparing THz-GSE permittivities to the static permittivity tensors from previous infrared and density functional theory studies.</p>}},
  author       = {{Knight, Sean and Richter, Steffen and Papamichail, Alexis and Stokey, Megan and Korlacki, Rafał and Stanishev, Vallery and Kühne, Philipp and Schubert, Mathias and Darakchieva, Vanya}},
  issn         = {{0003-6951}},
  language     = {{eng}},
  number       = {{3}},
  publisher    = {{American Institute of Physics (AIP)}},
  series       = {{Applied Physics Letters}},
  title        = {{Terahertz permittivity parameters of monoclinic single crystal lutetium oxyorthosilicate}},
  url          = {{http://dx.doi.org/10.1063/5.0177304}},
  doi          = {{10.1063/5.0177304}},
  volume       = {{124}},
  year         = {{2024}},
}