Funct. Mater. 2025; 32 (2): 197-202.
Electro-optical Pockels effect in HoAl3(BO3)4
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Nauky Avenue, Kharkiv, 61103, Ukraine
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.
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