Refractive index database

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Optical constants of Lu2O3 (Lutetium sesquioxide)
Yao et al. 2022: n 0.210–1.69 µm, k 0.210–0.224 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Conditions & Spec sheet

n_is_absolute: true
wavelength_is_vacuum: true


Single crystal


C. Yao, W. Shen, X. Hu, C. Hu. Optical properties of large-size and damage-free polished Lu2O3 single crystal covering the ultraviolet-visible-and near-infrared (UV–VIS–NIR) spectral region, J. Alloys Compd. 897, 162726 (2022) (See supplementary materials)


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Lutetium sesquioxide, Lu2O3

Lutetium sesquioxide (Lu2O3) is a white, crystalline compound of lutetium. This material is characterized by its high melting point and stability. In the realm of optics, Lu2O3 is known for its excellent scintillation properties, making it suitable for radiation detection applications. It is often used as a scintillating crystal in detectors, and its high atomic number aids in the efficient detection of gamma rays. Moreover, its transparency in the infrared region can be harnessed in specialized optical applications.

Other names

  • Lutetium(III) oxide
  • Dilutetium trioxide
  • Lutetium oxide

External links