Effects induced by 4.7 eV UV laser irradiation on pure silica core multimode optical fibers investigated by in situ optical absorption measurements

Messina F.; Comandè F.; Cannas M.

首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Effects induced by 4.7 eV UV laser irradiation on pure silica core multimode optical fibers investigated by in situ optical absorption measurements

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Effects induced by 4.7 eV UV laser irradiation on pure silica core multimode optical fibers investigated by in situ optical absorption measurements

机译：通过原位光吸收测量研究了4.7 eV UV激光辐照对纯硅芯多模光纤的影响

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We investigated by in situ optical absorption measurements the effects induced by 4.7 eV UV laser irradiation on pure silica core optical fibers. Laser irradiation with 100 MW cm~(- 2) laser intensity generates in the fiber E′ centers which partially decay after irradiation due to their reaction with diffusing H_2. An absorption band peaked at 5.3 eV is observed to grow in the post-irradiation stage with a kinetics anti-correlated to the decay of the 5.8 eV band of the E′ centers. The defect absorbing at 5.3 eV is proposed to be formed by trapping on pre-existing precursors of hydrogen atoms made available by breaking of H_2 on E′. We also show by repeated irradiation experiments that the 5.3 eV-absorbing center is photochemically destroyed by 4.7 eV laser light, and we estimate the cross section of this process. Possible structural models for this defect are discussed.

机译：我们通过原位光吸收测量研究了4.7 eV UV激光辐照对纯硅芯光纤的影响。在光纤E'中心产生100 MW cm〜（-2）激光强度的激光辐射，由于它们与扩散的H_2反应，辐射后部分衰减。在辐照后阶段观察到吸收峰在5.3 eV处增长，其动力学与E'中心5.8 eV谱带的衰减呈反相关。有人提出，在5.3 eV处吸收的缺陷是通过捕获在预先存在的氢原子前体上形成的，该氢原子前体是通过E'上的H_2断裂而获得的。我们还通过重复照射实验表明，5.3 eV吸收中心被4.7 eV激光光化学破坏，我们估计了该过程的横截面。讨论了此缺陷的可能的结构模型。

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《Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites》 |2011年第9期|共4页
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Messina F.; Comandè F.; Cannas M.;
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正文语种 eng
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E′ centers; Hydrogen diffusion; Laser irradiation;

机译：E'中心;氢扩散;激光辐照;

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1. Effects induced by 4.7 eV UV laser irradiation on pure silica core multimode optical fibers investigated by in situ optical absorption measurements [J] . Messina F., Comandè F., Cannas M. Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites . 2011,第8a9期

机译：通过原位光吸收测量研究了4.7 eV UV激光辐照对纯硅芯多模光纤的影响
2. Effects of γ and neutron irradiation on the optical absorption of pure silica core single-mode optical fibres from Nufern [J] . A. Calderon, C. Martinez-Rivero, F. Matorras, Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment . 2006,第2期

机译：γ和中子辐照对Nufern纯硅纤芯单模光纤的光吸收的影响
3. Correlation between radiation-induced defects, and optical properties of pure fused silica-core optical fiber, under gamma-ray irradiation in air at 1273 K [J] . Tsuchiya B., Kondo S., Tsurui T., Journal of Nuclear Materials: Materials Aspects of Fission and Fusion . 2011,第1a3期

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4. Radiation induced attenuation kinetics in pure-silica-core optical fibers during successive irradiations [C] . A. Alessi, S. Girard, D. Di Francesca, European Conference on Radiation and its Effects on Components and Systems . 2015

机译：辐射诱导连续照射期间纯二氧化硅芯光纤中的衰减动力学
5. Effects of drawing process and UV laser irradiation on defects of silica-based preforms and optical fibers [D] . Lee, Jong-Won 1999

机译：拉丝工艺和紫外线激光辐照对二氧化硅基预成型坯和光纤缺陷的影响
6. Extreme Radiation Sensitivity of Ultra-Low Loss Pure-Silica-Core Optical Fibers at Low Dose Levels and Infrared Wavelengths [O] . Adriana Morana, Cosimo Campanella, Jeoffray Vidalot, 2020

机译：低剂量水平和红外波长下超低损耗纯二氧化硅芯光纤的极端辐射敏感性
7. Effects induced by 4.7 eV UV laser irradiation on pure silica core multimode optical fibers investigated by in situ optical absorption measurements [O] . Messina F, Comandè F, Cannas M 2011

机译：通过原位光吸收测量研究了4.7 eV UV激光辐照对纯硅芯多模光纤的影响
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Effects induced by 4.7 eV UV laser irradiation on pure silica core multimode optical fibers investigated by in situ optical absorption measurements

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