1 November 1997 Luminescence spectroscopy of Cr3+ and Mn2+ in spodumene crystals
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Proceedings Volume 3176, Tunable Solid State Lasers; (1997) https://doi.org/10.1117/12.293447
Event: Tunable Solid State Lasers, 1996, Wroclaw, Poland
Luminescence emission and excitation spectra of a number of natural spodumene crystals have been measured at temperatures down to 12K. Both Cr3+ and Mn2+ centers were identified: Mn2+ is shown to be mainly in Li-sites rather than Al-sites and gives rise to abroad emission centered at 600 nm. In most spodumenes Cr3+ R-line emission with phonon sideband is observed at temperatures below 100K. In green hiddenite crystals Cr3+ emission is dominant at room temperature where the R-lines are superimposed on a broad-band emission. Calculation of the crystal-field splitting of the Cr3+ energy levels has been carried out assuming a C2v pseudo-symmetry for the Al-sites. In the more Mn- rich crystals multiple R1 lines are seen at temperatures below about 40K which are possibly associated with adjacent point defects due to charge compensation effects.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Walker, G. Walker, A. El Jaer, A. El Jaer, R. Sherlock, R. Sherlock, Thomas J. Glynn, Thomas J. Glynn, M. Czaja, M. Czaja, Zbigniew Mazurak, Zbigniew Mazurak, } "Luminescence spectroscopy of Cr3+ and Mn2+ in spodumene crystals", Proc. SPIE 3176, Tunable Solid State Lasers, (1 November 1997); doi: 10.1117/12.293447; https://doi.org/10.1117/12.293447

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