Three-dimensional grain boundary spectroscopy in transparent high power ceramic laser materials

Mariola O. Ramirez, Jeffrey Wisdom, Haifeng Li, Yan Lin Aung, Joseph Stitt, Gary L. Messing, V. Dierolf, Zhiwen Liu, Akio Ikesue, Robert L. Byer, Venkatraman Gopalan

Research output: Contribution to journalArticlepeer-review

70 Citations (SciVal)


Using confocal Raman and fluorescence spectroscopic imaging in 3-dimensions, we show direct evidence of inhomogeneous Nd3+distribution across grain boundaries (GBs) in Nd3+: YAG laser ceramics. It is clearly shown that Nd3+segregation takes place at GBs leading to self-fluorescence quenching which affects a volume fraction as high as 20%. In addition, we show a clear trend of increasing spatial inhomogeneities in Nd3+concentration when the doping levels exceeds 3 at%, which is not detected by standard spectrometry techniques. These results could point the way to further improvements in what is already an impressive class of ceramic laser materials.

Original languageEnglish (US)
Pages (from-to)5965-5973
Number of pages9
JournalOptics Express
Issue number9
StatePublished - Apr 28 2008

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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