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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 9 — Apr. 28, 2008
  • pp: 5965–5973

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, and Venkatraman Gopalan  »View Author Affiliations

Optics Express, Vol. 16, Issue 9, pp. 5965-5973 (2008)

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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.

© 2008 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
(180.6900) Microscopy : Three-dimensional microscopy
(300.6360) Spectroscopy : Spectroscopy, laser

ToC Category:
Lasers and Laser Optics

Original Manuscript: November 5, 2007
Revised Manuscript: April 3, 2008
Manuscript Accepted: April 3, 2008
Published: April 14, 2008

Mariola O. Ramirez, Jeffrey Wisdom, Haifeng Li, Yan L. Aung, Joseph Stitt, Gary L. Messing, V. Dierolf, Zhiwen Liu, Akio Ikesue, Robert L. Byer, and Venkatraman Gopalan, "Three-dimensional grain boundary spectroscopy in transparent high power ceramic laser materials," Opt. Express 16, 5965-5973 (2008)

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