Influence of longitudinal mode beating on laser-induced damage in fused silica

Díaz, Roberto Ruiz; Chambonneau, Maxime; Courchinoux, Roger; Grua, P.; Luce, J.; Rullier, Jean-Luc; Natoli, Jean-Yves; Lamaignère, Laurent

doi:10.1364/ol.39.000674

Cited by 42 publications

(23 citation statements)

References 18 publications

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“…In order to obtain results that are independent of the LID morphology, the same initiation wavelength has been chosen in all the studied growth configurations. Since at a given fluence LID density is much higher at 3ω than at 1ω [4], the initiation wavelength has been chosen at 3ω. At high fluences (i.e., for damage initiation probability higher than 80%), the observed initiated damage sites generally show multiple pits.…”

Section: Methodsmentioning

confidence: 99%

“…Since the conversion efficiency of the crystals is about 50%, the fused silica gratings are irradiated in a multiple wavelengths configuration by the main 3ω beam and also the 1ω and 2ω residual ones. The physical mechanisms involved during LID initiation on the exit surface of fused silica have recently been investigated at 1ω as well as at 3ω on samples polished with the same processes [4]. Studies of LID morphology show that subsurface cracks are located under the molten and fractured initiated craters [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Investigations on laser damage growth in fused silica with simultaneous wavelength irradiation

et al. 2015

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The laser-induced damage growth phenomenon is experimentally studied for damage sites on the exit surface of fused silica. The sites are irradiated by nanosecond laser pulses at 1064 and 355 nm separately and also simultaneously. The results in the single wavelength configurations are expressed in terms of the probability of growth and growth coefficient. For growing sites, a fluence correction expression is proposed in order to take into account the millimetric Gaussian profile of the beams. The use of this expression is necessary to obtain results that are consistent with the ones obtained in the existing literature with large homogeneous beams. In the multiple wavelengths configuration, the results are expressed as a function of the laser fluences at each wavelength and are found to be closely related to the parameters determined in the single wavelength experiments. A coupling between the two wavelengths is quantified, and could originate from the formation and the expansion of a plasma produced both in the center and at the periphery of the damage sites.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigations on laser damage growth in fused silica with simultaneous wavelength irradiation

et al. 2015

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“…Damage sites have also been initiated at 355 nm (3ω) in the SLM and the MLM case [5]. In both cases, Nomarski observations did not reveal any funnel-shaped regions nor any ring patterns of the same nature as the ones initiated at 1ω.…”

Section: Physical Modelingmentioning

confidence: 73%

“…The influence of mode composition on LID at 1064 nm (1ω) has been studied for the bulk of optical materials such as silicate glasses [3] and fused silica [4]. More recently, investigations on the exit surface of silica at 1ω report a difference of LID behavior between SLM and MLM regimes [5]. Earlier studies show that LID results from plasma formation in the neighborhood of an absorbing precursor defect [2,6,7].…”

Section: Introductionmentioning

confidence: 99%

Laser-induced damage morphology in fused silica at 1064 nm in the nanosecond regime

et al. 2014

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The morphology of laser-induced damage sites at the exit surface of fused silica is tightly correlated to the mode composition of the nanosecond laser pulses at 1064 nm. In the single longitudinal mode (SLM) configuration, a molten and fractured central zone is surrounded by a funnel-shaped surface modification. Ring patterns surround the damage sites when these are initiated by multiple longitudinal modes (MLM) laser pulses. In this last mode configuration, the pulses temporal profiles as well as the damage ring patterns differ from pulse to pulse. The appearance chronology of the rings is found to be closely related to the temporal shape of the laser pulses. This supports that the damage morphology originates from the coupling of a laser-supported detonation wave propagating in air with an ablation mechanism in silica. In our experiments, the propagation speed of the detonation wave reaches about 20 km/s and scales as the cube root of the laser intensity, in good agreement with theory.

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“…This behavior was explained in Ref. 22 by the enhancement of the three-photon absorption due to the intensity spikes related to MLM pulses, these pulses are more inclined to give rise to multi-photon absorption than SLM ones.…”

Section: Single Longitudinal Mode (Slm) Regimementioning

confidence: 87%

Correlation between laser-induced damage densities of fused silica and average incubation fluences at 1064 nm in the nanosecond regime

Lamaignère

Díaz

Chambonneau

et al. 2017

Journal of Applied Physics

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Correlation between laser-induced damage densities of fused silica and average incubation fluences at 1064 nm in the nanosecond regime The chronology of the physical processes involved in the nanosecond laser damage of fused silica is investigated at 1064 nm. From experiments realized with multiple longitudinal mode pulses, the correspondence between ring pattern damage morphology and the corresponding intensity profile allows the distinction of two damage phases: an incubation phase followed by a damage expansion phase that leads to the final damage diameter. It allows us to determine both the incubation and the expansion fluences. These results are compared to damage density measurements for different laser configurations, different optics, and different environments. It was found that damage densities were as high as incubation fluences were low. This approach shows a deterministic part of laser damage in nanosecond regime and contributes to reinforce the statistical results by reducing their random nature and is more able to guide the physical interpretations of laser damage experiments.Published by AIP Publishing.[http://dx

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Influence of longitudinal mode beating on laser-induced damage in fused silica

Cited by 42 publications

References 18 publications

Investigations on laser damage growth in fused silica with simultaneous wavelength irradiation

Investigations on laser damage growth in fused silica with simultaneous wavelength irradiation

Laser-induced damage morphology in fused silica at 1064 nm in the nanosecond regime

Correlation between laser-induced damage densities of fused silica and average incubation fluences at 1064 nm in the nanosecond regime

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