Abstract

Polarized low-temperature laser-excited Raman spectra of the compound thulium gallium garnet are reported. The orientation of the cubic crystal was such that the direction of propagation of the incident laser beam was not parallel to either the a, b, or c axis and in order to assign the Raman spectrum, the scattering tensor had to be rotated. All internal modes of the GaO₄ group of Tm₃Ga₂(GaO₄)₃ could be assigned and several external vibrations.

© 1968 Optical Society of America

Raman-active phonons in aluminum, gallium, and iron garnets*

Jin-Joo Song, P. B. Klein, R. L. Wadsack, M. Selders, S. Mroczkowski, and R. K. Chang
J. Opt. Soc. Am. 63(9) 1135-1140 (1973)

Electronic Raman Spectra. IV: Relation between the Scattering Tensor and the Symmetry of the Crystal Field*

J. A. Koningstein and O. Sonnich Mortensen
J. Opt. Soc. Am. 58(9) 1208-1213 (1968)

Zeeman–Raman Transitions of Tb³⁺ in a Cubic Crystal*

J. A. Koningstein and G. Schaack
J. Opt. Soc. Am. 60(6) 755-758 (1970)

Optical Phonons in Iron Garnets

P. Grunberg, J. A. Koningstein, and L. G. Van Uitert
J. Opt. Soc. Am. 61(12) 1613-1617 (1971)

Laser-Excited Rotation–Vibration Raman Scattering in Ultra-Small Gas Samples*

J. J. Barrett and N. I. Adams
J. Opt. Soc. Am. 58(3) 311-319 (1968)