Spectroscopy of phonon and vibronic states of YbAl3(BO3)4 single crystal |
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| Authors: | K N Boldyrev B N Mavrin M N Popova L N Bezmaternykh |
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| Institution: | 1. Institute for Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow oblast, 142190, Russia
2. Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia
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| Abstract: | The polarized Raman and reflection spectra of a single crystal YbAl3(BO3)4 at room temperature were studied. Raman active vibrational modes A
1, E
TO, and E
LO are identified. In the Raman spectrum, we detected an intense line at a frequency of 1018 cm−1, which refers to internal vibrations of the BO3 group and is known to be promising for use in amplifiers based on stimulated Raman scattering. From the simulation of reflection
spectra by the method of dispersion analysis the frequencies of A
2 vibrational modes were determined. Intense bands observed in the low-temperature transmission spectra in the range of f-f transitions in the Yb3+ ion are attributed to electron-phonon transitions. The Raman lines are compared with electron-phonon lines in the transmission
spectrum. |
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| Keywords: | |
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