Funct. Mater. 2025; 32 (2): 197-202.

doi:https://doi.org/10.15407/fm32.02.197

Electro-optical Pockels effect in HoAl3(BO3)4

V.A. Bedarev, D.N. Merenkov, S.N. Poperezhai

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Nauky Avenue, Kharkiv, 61103, Ukraine

Abstract: 

The electro-optical Pockels effect has been found in the HoAl3(BO3)4 single crystal. The electric field-induced linear optical birefringence was investigated for light with a wavelength of 632.8 nm. The Brewster angles were measured, which allowed determining the main refractive indices of the crystal. The general electro-optical coefficient rg of the crystal was found to be ≈ 5.9 · 10-12 m/V at room temperature. The electro-optical properties of holmium and thulium aluminoborates were compared.

Keywords: 
non-centrosymmetric crystal, rare-earth aluminoborates, electro-optics, Pockels effect, linear birefringence of light, refractive index.

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