Spatial separation effects in a guiding procedure in a modified ion-beam-sputtering process

Malobabic, Sina; Jupé, Marco; Ristau, Detlev

doi:10.1038/lsa.2016.44

Cited by 17 publications

(8 citation statements)

References 27 publications

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“…Irradiation also has a significant effect on light intensification within the defect and the multilayer 10 . Removal of such nodules by using advanced deposition methods 13 , 14 would help to mitigate losses in the all-silica-mirrors as the observed intrinsic damage resistance was demonstrated to be very high. High intrinsic LIDTs thus also confirm that proposed principle of tailored porosity in combination high bandgap deposition materials could lead to an entirely new class of highly resistant coatings for very demanding high power laser applications.…”

Section: Discussionmentioning

confidence: 99%

“…Defects cause either strong electric field intensity 10 enhancement and/or additional absorptivity, which results in the enhanced optical energy deposition in the vicinity of defects and initiates LID. In recent years significant progress was achieved in surface defect minimization: special techniques of glass polishing 11 , post fabrication etching techniques 12 as well as advanced thin film deposition 13 , 14 methods were developed. Aside from the defect minimization, efforts to improve intrinsic LIDT in optical coatings are also explored.…”

Section: Introductionmentioning

confidence: 99%

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Next generation highly resistant mirrors featuring all-silica layers

Tolenis

Grinevičiūtė

Smalakys

et al. 2017

Sci Rep

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A principal possibility to overcome fundamental (intrinsic) limit of pure optical materials laser light resistance is investigated by designing artificial materials with desired optical properties. We explore the suitability of high band-gap ultra-low refractive index material (n less than 1.38 at 550 nm) in the context of highly reflective coatings with enhanced optical resistance. The new generation all-silica (porous/nonporous) SiO2 thin film mirror with 99% reflectivity was prepared by glancing angle deposition (GLAD). Its damage performance was directly compared with state of the art hafnia/silica coating produced by Ion-Beam-Sputtering. Laser-Induced Damage Thresholds (LIDT) of both coatings were measured in nanosecond regime at 355 nm wavelength. Novel approach indicates the potential for coating to withstand laser fluence of at least 65 J/cm2 without reaching intrinsic threshold value. Reported concept can be expanded to virtually any design thus opening a new way of next generation thin film production well suited for high power laser applications.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Next generation highly resistant mirrors featuring all-silica layers

Tolenis

Grinevičiūtė

Smalakys

et al. 2017

Sci Rep

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“…In this paper, LVF was prepared by dual ion beam sputtering technology (Veeco, Plainview, NY, USA) [18,19]. Because of the high energy of the deposited particles in the process of preparation, the films prepared by dual ion beam sputtering have good optical stability, environmental stability, and repeatability.…”

Section: Preparation and Film Thickness Matching Of Lvfmentioning

confidence: 99%

Preparation and Spectrum Characterization of a High Quality Linear Variable Filter

et al. 2018

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To meet the requirements for lightweight, miniaturized dispersive optical systems for space applications, linear variable filters with a high transmittance and spatial dispersion coefficient are proposed. The filters were produced with dual ion beam sputtering, where a single layer thickness variation was achieved with a deposition rate adjustment based on a linear variable correction formula. A linear variable trend matching method was used to correct the film thickness based on the reduction of the mismatch error between two materials: Ta2O5 and SiO2. The influence of the spectral and spatial measuring average effects was addressed by sampling the spot size optimization. This paper presents an all-dielectric linear variable filter that operates between 520 and 1000 nm, with an excellent linear dependence of 40 nm/mm over 12 mm. The linear variable filter possessed a 2.5% bandwidth, and its transmittance was found to be >80% at the central wavelength of the band, with a 0.1% transmittance in the cut-off region. These results indicate great potential for optical devices for space applications, and the developed process has good reproducibility and stability.

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“…Composite materials are widely used in aerospace, aircraft, marine, civil, automotive, sport [5], and even optical engineering [6][7][8][9][10]. This is due to their outstanding physical, mechanical, and thermal properties, particularly their high stiffness and strength to weight ratios, good fatigue strength, excellent corrosion resistance, and dimensional stability.…”

Section: Introductionmentioning

confidence: 99%

A Numerical-Experimental Method for Drop Impact Analysis of Composite Landing Gear

Guan

Xue

et al. 2017

Shock and Vibration

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The special material performance, manufacturing process, machining behavior, and operating condition of composite materials cause uncertainties to inevitably appear in the mechanical properties of composite structures. Therefore, variability in mechanical properties must be considered in a mechanical response analysis of composite structures. A method is proposed in this paper to predict the dynamic performance of composite landing gear with uncertainties using experimental modal analysis data and nonlinear static test data. In this method, the nonlinear dynamic model of the composite landing gear is divided into two parts, the linear and the nonlinear parts. An experimental modal analysis is employed to predict the linear parameters with a frequency response function, and the nonlinear parameters caused by large deflection are identified by a nonlinear static test with the nonlinear least squares method. To check the accuracy and practicability of the method, it is applied to drop impact simulations and tests of composite landing gear. The results of the simulations are in good agreement with the test results, which shows that the proposed method is perfectly suited for the dynamic analysis of composite landing gear.

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Spatial separation effects in a guiding procedure in a modified ion-beam-sputtering process

Cited by 17 publications

References 27 publications

Next generation highly resistant mirrors featuring all-silica layers

Next generation highly resistant mirrors featuring all-silica layers

Preparation and Spectrum Characterization of a High Quality Linear Variable Filter

A Numerical-Experimental Method for Drop Impact Analysis of Composite Landing Gear

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