Optical constants of TeO2 (Tellurium dioxide)
Hrabovsky et al. 2024: n,k 0.193–11.0 µm
Complex refractive index (n+ik)
Derived optical constants
Comments
TeO2 glass synthesized by intermittent quenching from a melt at 900 °C in a platinum crucible. Optical constants measured on an as-prepared surface. TeO2 glass is hygroscopic, and polishing may modify its optical properties despite water-free processing. The original publication also reports data for polished samples, allowing comparison between the pristine melt/air interface and polished surfaces, as well as for glass synthesized in an alumina crucible, where significant Al2O3 incorporation altered the glass composition and optical properties.
References
J. Hrabovsky, N.S. Tagiara, J. Mistrik, L. Strizik, P. Rysanek, V. Kopecky Jr., J. Kozlik, J. Orava, S. Wang, T. Ishibashi, E. I. Kamitsos, M. Veis. Pure TeO2 glass: Influence of synthesis conditions on linear and non-linear optical, magneto-optical and structural properties. J. Alloys Compd. 997, 174788 (2024) (See Supplementary materials)
Data
Additional information
About Tellurium dioxide
Tellurium dioxide (TeO2) is a solid, white crystalline compound and is the most commonly encountered oxide of tellurium. It is an amphoteric oxide, meaning it can act both as an acid or a base depending on the reaction. Its unique properties make it useful for a range of applications. One of the most prominent applications of TeO2 is in the production of glass. Due to its high refractive index and unique dispersive properties, it's used to make acousto-optic devices, which can be used to diffract and modulate light using sound waves. TeO2 is also a significant precursor in the synthesis of other tellurium compounds. In the field of nonlinear optics, tellurium dioxide crystals have been employed for frequency doubling and other wavelength conversion processes. Its transparent nature in the visible and near-infrared region makes it a favorable material for these optical applications.
Polymorphs:
- α-TeO2 (paratellurite): tetragonal
- β-TeO2: orthorhombic
Other names and variations
- TeO2
- Tellurium(IV) oxide
- Tellurium oxide
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