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Thermal Shift and Broadening of Spectral Lines in Neodymium Doped Garnets

Published online by Cambridge University Press:  10 February 2011

Xuesheng Chen  and
Baldassare Di Bartolo
Xuesheng Chen
Affiliation:
Department of Physics & Astronomy, Wheaton College, Norton, MA 02766, xchen @Wheatonma.edu
Baldassare Di Bartolo
Affiliation:
Department of Physics, Boston College, Chestnut Hill, MA 02167
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Abstract

Thermal shift and broadening of sharp luminescence lines in three Nd-doped laser garnet crystals, GGG, GSGG, and CYMGG, are investigated in a temperature range of 78 to 600K. These lines are due to the 4F3/2 → 4I9/2 (∼0.94μ) and 4F3/2 → 4I11/2 (∼lμ) transitions. Line widths and positions at different temperatures are reported for the lines of RI→Yl, RI→Y2, R2→Y3, RI→Z5 in GGG:Nd, RI→Y1, RI→Y2, R2→Y1, R2→Y3, RI→Y6, R2→Y6, RI→Z5 in GSGG:Nd,Cr, and R2→Y1, RI→Z5 in CYMGG:Nd,Cr. We observed that all the lines shift to longer wavelengths (red shift) with increasing temperature except for the R1,2 →Z5 lines that shift to shorter wavelength (blue shift) in all the three garnet crystals. For the widths, all the lines become broader with increasing temperature. It was also observed that the line width in the germanium garnet CYMGG is much broader than in GGG and GSGG.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 560: Symposium E – Luminescent Materials , 1999 , 353
Copyright
Copyright © Materials Research Society 1999

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References

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