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[期刊论文][LASERS, OPTICS, AND OPTOELECTRONICS]
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Synchrotron radiation infrared microscopic study of non-bridging oxygen modes associated with laser-induced breakdown of fused silica
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作 者：
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Manyalibo J. Matthews;Christopher W. Carr;Hans A. Bechtel;Rajesh N. Raman;
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出版年：2011
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页 码：151109 - 151109
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出版社：AIP Publishing
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摘 要：
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Nanosecond pulse laser-driven optical breakdown at SiO2 surfaces as probed by synchrotron-based Fourier transform infrared (SRFTIR) and photoluminescence (PL) microscopies is presented. SRFTIR mapping of laser damage identified localized non-bridging Si-O vibrational modes at ∼950 cm−1 which became stiffer as 355 nm laser pulse lengths were increased from 5 to 20 ns. The bridging Si-O-Si transverse optic mode frequency varied significantly across damaged regions indicating a wide range of average bond angles, softening slightly with increasing pulse length. 355 nm-excited PL images of laser modified regions could be directly correlated with the structural modifications identified through SRFTIR.
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关键字：
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Infrared spectra ; Photoluminescence ; Silica ; Energy transfer ; Laser damage
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所属期刊
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ISSN: 0003-6951
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来自：AIP Publishing
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