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

被引：65

作者：

Ramirez, Mariola O. ^{[1
,2
]}

Wisdom, Jeffrey ^{[3
]}

Li, Haifeng ^{[4
]}

Aung, Yan Lin ^{[5
]}

Stitt, Joseph ^{[1
,2
]}

Messing, Gary L. ^{[1
,2
]}

Dierolf, V. ^{[6
]}

Liu, Zhiwen ^{[4
]}

Ikesue, Akio ^{[5
]}

Byer, Robert L. ^{[3
]}

Gopalan, Venkatraman ^{[1
,2
]}

机构：

[1] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[3] Stanford Univ, Ginzton Lab, Dept Appl Phys, Palo Alto, CA 94304 USA

[4] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA

[5] World Lab Co Ltd, Atsuta Ku, Nagoya, Aichi 4560023, Japan

[6] Dept Phys, Bethlehem, PA 18015 USA

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 09期

关键词：

D O I：

10.1364/OE.16.005965

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (c) 2008 Optical Society of America.

引用

页码：5965 / 5973

页数：9

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