抄録
Spectra of the magnetocircular photoluminescence (MCPL) as well as the magnetocircular dichroism of absorption (MCDA) were measured in single crystals of ruby with various chromium concentrations at about 25 K. Dispersion-type MCPL structures were observed for both R1 and R2 photoluminescence (PL) lines.
Lineshapes of MCPL spectra of R2-line for various magnetic fields were quite symmetrical, which could be reproduced by a theoretical calculation using the matrix elements reported by Sugano et al. On the other hand, the MCPL spectra of the R1-line were asymmetric and could not be explained by the calculation. The MCPL lineshapes of R1 were strongly dependent on the magnetic field B. The integrated intensity of the R1 MCPL spectrum was found to have a finite value taking a maximum around B=0.5 T.
