532和355nm纳秒激光脉冲对光热折射玻璃中银纳米粒子光破坏的影响

2016 4th International Conference on Photonics, Optics and Laser Technology (PHOTOPTICS) Pub Date : 2016-11-18 DOI:10.5220/0005669702410245

Alexander Ignatiev, D. Ignatiev, D. Klyukin, N. Nikonorov, R. Nuryev, A. Sidorov

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引用次数: 1

摘要

本文研究了纳秒激光辐射波长对光热折变玻璃中银纳米粒子光破坏过程的影响。采用纳米银和不同卤化物(F、Cl、Br)作为掺杂剂，应用纳秒级YAG:Nd激光的二、三次谐波辐照光-热折变硅酸盐玻璃。光谱学和x射线衍射分析表明，纳米颗粒Ag/AgBr和Ag/Na0.8Ag0.2Cl的核/壳存在。在355nm波长处，三次谐波辐照引起表面等离子体共振带的红移(35nm)，而在532nm波长处，纳秒激光辐射没有引起表面等离子体共振带的明显位移。这种差异是由参与光破坏过程的机制引起的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Influence of 532 and 355 nm nanosecond laser pulses on photodestruction of silver nanoparticles in photo-thermo-refractive glasses

In this research we investigate an influence of wavelength of nanosecond laser radiation on the process of silver nanoparticles photodestruction in photo-thermo-refractive glass. Second and third harmonic of nanosecond YAG:Nd laser have been applied to irradiate photo-thermo-refractive silicate glasses with silver nanoparticles and different halogenides (F, Cl, Br) as dopants. Optical spectroscopy and X-ray diffraction analysis have revealed a presence of core/shell nanoparticles Ag/AgBr and Ag/Na0.8Ag0.2Cl. Irradiation of samples by third harmonic at 355 nm wavelength causes a red shift of surface plasmon resonance band (35 nm) whereas nanosecond laser radiation at 532 nm does not cause significant shift of the surface plasmon resonance band. Such a difference is caused by mechanisms involved in the photodestruction process.

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2016 4th International Conference on Photonics, Optics and Laser Technology (PHOTOPTICS)

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