Nanosecond multi-pulse damage investigation of optical coatings in atmosphere and vacuum environments

Ling, Xiulan

doi:10.1016/j.apsusc.2011.01.053

Cited by 22 publications

(8 citation statements)

References 15 publications

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“…As mentioned before, multiple-pulse laser-induced damage at the UV wavelengths 355 nm and 266 nm is dominated by the accumulation of light-induced material modifications in the bulk of fused silica. Contrary to what can be observed at 1064 nm [14,15,21] the statistical model cannot describe the damage probability as a function of the used laser pulses for all tested fluences. An example of this mismatch is shown in Fig.…”

Section: Material-modification Dominated Damage Initiationcontrasting

confidence: 70%

“…Indeed, it was observed in various optical materials that multi-pulse irradiation leads to a decrease of the laser-induced damage threshold with increasing number of pulses. This effect is commonly named "fatigue" effect and was observed in glasses [8][9][10][11], in crystals [12,13], and in optical coatings [14]. Few studies exist that use experimental evidence to develop a physical image of the material modifications operated by nanosecond UV-irradiation and explaining the reduced laser-damage threshold ( [8,9,13] and references in [10]).…”

Section: Introductionmentioning

confidence: 99%

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Nanosecond UV laser-induced fatigue effects in the bulk of synthetic fused silica: a multi-parameter study

Gouldieff¹,

Wagner²,

Natoli³

2015

Opt. Express

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Multiple-pulse S-on-1 laser damage experiments were carried out in the bulk of synthetic fused silica at 355 nm and 266 nm. Two beam sizes were used for each wavelength and the pulse duration was 8 ns. The results showed a fatigue effect that is due to cumulative material modifications. The modifications have a long lifetime and the fatigue dynamics are independent of the used beam sizes but differ for the two wavelengths. Based on the fact that, in the context of material-modification induced damage, the damage thresholds for smaller beams are higher than for larger beams, we discuss possible mechanisms of damage initiation.

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Section: Material-modification Dominated Damage Initiationcontrasting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Nanosecond UV laser-induced fatigue effects in the bulk of synthetic fused silica: a multi-parameter study

Gouldieff¹,

Wagner²,

Natoli³

2015

Opt. Express

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“…Furthermore, in vacuum environment, the thermal conductivity of film layer prepared by e-beam evaporation will decrease largely due to water desorption. This is because water desorption resulted in the decrease of the refractive index and packing density which closely related to the corresponding thermal conductivity of the film layer [25]. From Figs.…”

Section: Discussionmentioning

confidence: 98%

Influence of oxygen partial pressure on laser-induced damage resistance of ZrO2 films in vacuum

Ling

Liu

Wang

et al. 2015

Vacuum

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“…Yet any other suggested model provided similar results. In the case of color change mode, we found two best candidates namely logarithmic [18][19][20][21] and power law 16,17 . We have examined both models.…”

Section: Validation Of Fitted Modelsmentioning

confidence: 95%

Towards qualification longevity of high power Space optics

Melninkaitis¹,

Batavičiūtė²,

Heese

et al. 2019

International Conference on Space Optics — ICSO 2018

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Laser systems dedicated to space missions require durable and well-characterized optics, that could ensure long-term operation under high average output power. If any of optical elements in such system experiences light-induced fatigue, the performance of whole laser system suffers. Thus, any delayed failure of the optical element would also endanger the entire space mission as repairing optic in the orbit is rather complicated. Up to now, the ability to predict optic's longevity required by space programs was difficult and expensive, because of limited experimental data and lack of validated prediction models and methods. In order to address this problem, Lidaris and ESA joined forces for a two years cooperation project ESPRESSO. The overall aim of the project is to carry out research and development work required for essential preparation of reliable longevity qualification procedure to evaluate high power laser optics with intended use in space applications. Main elements of chosen methodology for optics lifetime prediction is reported in this paper. The essence of the proposed method lies in online video detection, failure mode (damage mechanism) separation and subsequent search of appropriate extrapolation models and methods. Main experimental findings confirm the suitability of the suggested approach for prediction of laser-induced damage threshold (LIDT) from a limited set of data to the extrapolated higher number of incident laser pulses.

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Nanosecond multi-pulse damage investigation of optical coatings in atmosphere and vacuum environments

Cited by 22 publications

References 15 publications

Nanosecond UV laser-induced fatigue effects in the bulk of synthetic fused silica: a multi-parameter study

Nanosecond UV laser-induced fatigue effects in the bulk of synthetic fused silica: a multi-parameter study

Influence of oxygen partial pressure on laser-induced damage resistance of ZrO2 films in vacuum

Towards qualification longevity of high power Space optics

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