Laser and Zeeman spectroscopy of Pr³⁺ : CsCdBr₃; a simplified crystal field model

Trivalent transition ions associate in pairs when doped in CsCdBr3 crystals. Using high resolution absorption and emission spectroscopy, we have measured the energy levels of Pr3+ : CsCdBr3 and determined their associated irreducible representations. From Zeeman measurements we obtained the g factor for the 1D2 multiplet (g⌈ = 0.9; g⊥ = 0) and the predictions of a sim crystal field model show that Pr3+ ions see mainly an octahedral contribution, plus a small C3v distortion. We also use these measurements to determine a value of the hyperfine interaction constant AJ(1D2 of 440 +- 150 MHz which is smaller than the value previously determined for Pr3+ : LaF3. © 1993.