Terahertz permittivity parameters of monoclinic single crystal lutetium oxyorthosilicate
(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
- Knight, Sean LU ; Richter, Steffen LU ; Papamichail, Alexis ; Stokey, Megan ; Korlacki, Rafał ; Stanishev, Vallery ; Kühne, Philipp ; Schubert, Mathias LU and Darakchieva, Vanya LU
- organization
- publishing date
- 2024-01
- 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}}, }