Localized pulsed laser interaction with submicronic gold particles embedded in silica: a method for investigating laser damage initiation

Natoli, Jean-Yves; Gallais, Laurent; Bertussi, Bertrand; During, Annelise; Commandré, Mireille; Rullier, Jean-Luc; Bonneau, Florian; Combis, P.

doi:10.1364/oe.11.000824

Cited by 42 publications

(22 citation statements)

References 16 publications

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“…Many experiments have shown that the damage morphologies initiating from real and artificial nanoabsorbing defects are very similar. Thus, an alternative approach to study laser interaction with nano-absorbing defects is to introduce artificial nano-absorbing defects inside the coatings [73][74][75]. Gold nanoparticles are the preferred choice for artificial absorbing defects because of their well-known optical and thermal characteristics, chemical stability, and availability in the form of gold colloids or powders.…”

Section: Interpretation Of Crater Formationmentioning

confidence: 99%

Defect-related properties of optical coatings

Cheng¹,

Wang²

2014

Advanced Optical Technologies

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Defects in optical coatings are a major factor degrading their performance. Based on the nature of defects, we classified them into two categories: visible defects and non-visible defects. Visible defects result from the replication of substrate imperfections or particulates within the coatings by subsequent layers and can increase scattering loss, produce critical errors in extreme ultraviolet lithography, weaken mechanical and environmental stability, and reduce laser damage resistance. Non-visible defects mainly involve a decrease in laser damage resistance but typically have no influence on other properties of optical coatings. In the case of widely used HfO 2 /SiO 2 dielectric coatings, metallic Hf nano-clusters, off-stoichiometric HfO 2 nano-clusters, or areas of high-density electronic defects have been postulated as possible sources for non-visible defects. The emphasis of this review is devoted to discussing localized defect-driven laser-induced damage (LID) in optical coatings used for nanosecond-scale pulsed laser applications, but consideration is also given to other properties of optical coatings such as scattering, environmental stability, etc. The low densities and diverse properties of defects make the systematic study of LID initiating from localized defects time-consuming and very challenging. Experimental and theoretical studies of localized defect-driven LID using artificial defects whose properties can be well controlled are highlighted.

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Section: Interpretation Of Crater Formationmentioning

confidence: 99%

Defect-related properties of optical coatings

Cheng¹,

Wang²

2014

Advanced Optical Technologies

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“…One possibility is electric field enhancement on inclusion, scratches 2 or self focusing induced by thermal effect or non linearity. Another possibility mainly reported 3,4,5 is the laser damage initiation through local absorption. In this case the local heating can be extended to the surrounding material and reach a critical temperature then lead to a plasma formation and subsequent shockwave.…”

Section: Introductionmentioning

confidence: 99%

Multiscale analysis: a way to investigate laser damage precursors in materials for high power applications at nanosecond pulse duration

et al. 2010

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The mechanism of laser induced damage in optical materials under high power nanosecond laser irradiation is commonly attributed to the presence of precursor centers. Depending on material and laser source, the precursors could have different origins. Some of them are clearly extrinsic, such as impurities or structural defects linked to the fabrication conditions. In most cases the center size ranging from sub-micrometer to nanometer scale does not permit an easy detection by optical techniques before irradiation. Most often, only a post mortem observation of optics permits to proof the local origin of breakdown. Multi-scale analyzes by changing irradiation beam size have been performed to investigate the density, size and nature of laser damage precursors. Destructive methods such as raster scan, laser damage probability plot and morphology studies permit to deduce the precursor densities. Another experimental way to get information on nature of precursors is to use non destructive methods such as photoluminescence and absorption measurements. The destructive and non destructive multiscale studies are also motivated for practical reasons. Indeed LIDT studies of large optics as those used in LMJ or NIF projects are commonly performed on small samples and with table top lasers whose characteristics change from one to another. In these conditions, it is necessary to know exactly the influence of the different experimental parameters and overall the spot size effect on the final data. In this paper, we present recent developments in multiscale characterization and results obtained on optical coatings (surface case) and KDP crystal (bulk case).

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“…Different theoretical and experimental studies have shown in nanosecond regime that absorbing nanometer-sized particles are responsible for the initiation of the damage process. [1][2][3][4] In most cases these defects are not identified since they may have nanoscale size and be distributed at low concentration. In the case of surface damage, the precursors could be contaminants coming from the steps of polishing, [5][6][7][8] cleaning, and also from the deposition techniques and materials involved in the coatings.…”

Section: Introductionmentioning

confidence: 99%

LIDT improvement of multilayer coatings by accurate analysis of fabrication steps

et al. 2005

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We present Laser Induced Damage Threshold (LIDT) results on multilayer components with different optical functions for near infrared applications. In this paper, we investigate the different fabrication steps of such functions. In particular, we show experimental results on surface preparation (polishing, cleaning,) and on deposition techniques (Ion beam assisted process) related to the materials involved in coatings. Laser damage tests are performed at 1064-nm with a 5-ns pulse Nd:Yag laser and experiments are made at surfaces of optical components using a 12 µm diameter focused beam. Accurate damage probability curves are plotted thanks to a reliable statistical measurement of laser damage. Use of a statistical model permits to deduce the densities of laser damage precursors. A systematic analysis of all the steps involved in fabrication allows then to build multilayer components with high laser induced damage resistance.

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Localized pulsed laser interaction with submicronic gold particles embedded in silica: a method for investigating laser damage initiation

Cited by 42 publications

References 16 publications

Defect-related properties of optical coatings

Defect-related properties of optical coatings

Multiscale analysis: a way to investigate laser damage precursors in materials for high power applications at nanosecond pulse duration

LIDT improvement of multilayer coatings by accurate analysis of fabrication steps

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