Far-infrared spectroscopy of terbium-scandium-aluminium garnet and terbium-scandium perovskite

Z. Mrázková; D. Hrabovský; K. Postava; J. Pištora; S. Turczynski; K. Kolodziejak; D. A. Pawlak

doi:10.1117/12.881907

14 December 2010 Far-infrared spectroscopy of terbium-scandium-aluminium garnet and terbium-scandium perovskite

Z. Mrázková, D. Hrabovský, K. Postava, J. Pištora, S. Turczynski, K. Kolodziejak, D. A. Pawlak

Proceedings Volume 7746, 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 774617 (2010) https://doi.org/10.1117/12.881907
Event: 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2010, Liptovsky Jan, Slovakia

Abstract

Single crystals of the terbium-scandium-aluminium garnet (Tb₃Sc₂Al₃O₁₂) and terbium-scandium perovskite (TbScO₃) prepared using the micro-pulling down method represent important materials with potential in photonics and optics. A method for far- and mid-infrared spectroscopy of the samples as small as 1 mm is proposed and tested in reflection and transmission configuration. High signal-to-noise ratio and high precision are obtained using the vacuum Fourier transform infrared (FTIR) spectrometer and a special pinhole holder. Reflectance spectra of the materials are measured in the spectral range from 7500 to 100 cm^-1 (1.3 μm - 100 μm) for the angle of incidence of 11 degree. Optical functions were obtained by fitting of the data with the model dielectric function consisting of Lorentz damped harmonic oscillators and fulfilling the Kramers-Kronig dispersion relations.

Citation Download Citation

Z. Mrázková, D. Hrabovský, K. Postava, J. Pištora, S. Turczynski, K. Kolodziejak, and D. A. Pawlak "Far-infrared spectroscopy of terbium-scandium-aluminium garnet and terbium-scandium perovskite", Proc. SPIE 7746, 17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 774617 (14 December 2010); https://doi.org/10.1117/12.881907

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