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

Ramaz, François; Macfarlane, R. M.; Vial, J. C.; Chaminade, Jean‐Pierre; Madéore, F.

doi:10.1016/0022-2313(93)90039-p

Cited by 23 publications

(19 citation statements)

References 17 publications

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“…1a). The lowest level of this multiplet lying at about 2234 cm −1 was reported to be the 1 Γ 2 level, from polarized fluorescence measurements [1]. In that case, a strong very narrow (with the width of 0.05 cm −1 ) line observed at 2234.8 cm −1 corresponds to the magnetic dipole transition…”

Section: Resultsmentioning

confidence: 99%

“…1 shows low temperature transmittance spectra of CsCdBr 3 :Pr 3+ (0.2 %) corresponding to different infrared transitions. The first excited state of the ground multiplet 3 H 4 lies at about 170 cm −1 [1][2][3][4] and is not populated at helium temperatures. So, low temperature absorption spectra display crystal field levels of the excited multiplets directly.…”

Section: Methodsmentioning

confidence: 99%

“…The positions of crystal field levels for the main center, as reported by different authors, differ by 2-14 cm −1 . Typical spectral resolution used in the mentioned works was 0.8-2 cm −1 , while the only high resolution study (it concerned the 1 D 2 level) revealed spectral lines as narrow as 0.1 cm −1 [1,5]. Peculiar doublet line shape was observed for the…”

Section: Introductionmentioning

confidence: 99%

“…The very first analysis of the crystal field energies of Pr 3+ in CsCdBr 3 [1] showed that the crystal field affecting the symmetric dimer centers consists of a strong cubic and a weak trigonal components and that the last one is determined mainly by the quadrupolar (B 0 2 ) term. This conclusion was confirmed in the studies of the crystal field energies of Tm 3+ and Ho 3+ symmetric pair centers where data obtained from both optical and submillimeter EPR investigations were taken into account [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…This makes them a promising material for up-conversion lasers. The structure of CsCdBr 3 belongs to the D were intensively studied before [1][2][3][4][5], crystal field energies of the lowest excited multiplets were not investigated in absorption. The positions of crystal field levels for the main center, as reported by different authors, differ by 2-14 cm −1 .…”

Section: Introductionmentioning

confidence: 99%

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High-resolution infrared absorption spectra, crystal-field levels, and relaxation processes inCsCdBr3:Pr3+

et al. 2001

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High resolution low-temperature absorption spectra of 0.2 % Pr 3+ doped CsCdBr3 were measured in the spectral region 2000-7000 cm −1 . Positions and widths of the crystal field levels within the 3 H5, 3 H4, 3 F2, and 3 F3 multiplets of the Pr 3+ main center have been determined. Hyperfine structure of several spectral lines has been found. Crystal field calculations were carried out in the framework of the semiphenomenological exchange charge model (ECM). Parameters of the ECM were determined by fitting to the measured total splittings of the 3 H4 and 3 H6 multiplets and to the observed in this work hyperfine splittings of the crystal field levels. One-and two-phonon relaxation rates were calculated using the phonon Green's functions of the perfect (CsCdBr3) and locally perturbed (impurity dimer centers in CsCdBr3:Pr 3+ ) crystal lattice. Comparison with the measured linewidths confirmed an essential redistribution of the phonon density of states in CsCdBr3 crystals doped with rare-earth ions.

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Section: Resultsmentioning

confidence: 99%