Damage threshold of fused silica

WebOct 31, 2007 · We present an experimental and numerical study of the damage and ablation thresholds at the surface of a dielectric material, e.g., fused silica, using short pulses ranging from 7 to 300 fs. The relevant numerical criteria of damage and ablation thresholds are proposed consistently with experimental observations of the laser irradiated zone. WebFor example, fused silica does not seem to demonstrate any correlation between the number of shots and bulk damage threshold. 8 It is useful …

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WebFigure 1(a) shows the transmission through fused silica as a function of the incident pulse intensity (if the focus were in vacuum) for pulses of duration between 43 and Web-Responsible for proprietary nano-textured fused silica endcap production, including R&D into scaling up-Lead a research initiative to improve the laser damage thresholds of optics, resulting in ... dattco motorcoach \\u0026 receptive services https://mcelwelldds.com

Scratch Types and Damage Thresholds of Fused Silica

WebLaser damage in fused silica, particularly ultraviolet laser damage, is still a key problem limiting the development of high-power laser systems. In this Letter, a combined process of chemical etching and CO2 laser polishing was applied to ground fused silica. A super-smooth surface with a root-mean-square roughness of 0.25 nm was achieved through … WebDec 1, 2015 · Laser damage to fused silica continues a main issue of high-power/energy laser systems. HF-based etching technique is known to mitigate laser damage initiation and growth under UV laser illumination. ... As a result, improving the laser-induced damage threshold (LIDT) of fused silica optics contributes to the enhancement of the overall ... WebFUSED SILICA dattco in new britain ct

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Damage threshold of fused silica

Subsurface defects of fused silica optics and laser induced damage …

WebMar 31, 2024 · In this work, effects of 10 keV argon ion implantation on laser-induced damage threshold (LIDT) of fused silica were systematically investigated with ion fluences ranged from 1 × 10 16 ions/cm 2 to 1 × 10 18 ions/cm 2.Results show that only when the ion fluence increases above 1 × 10 17 ions/cm 2, the surface roughness apparently … Webreduction in the surface damage threshold of the fused silica. 1/2. Recently, a research team from the Shanghai Institute of Optics and Fine

Damage threshold of fused silica

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WebThis paper reports the results of a study to determine the degrading effects of flowing dye solvents on the laser damage threshold of fused-silica windows at 308nm. Thresholds were measured at the SiO/sub 2/solvent interface in a test cell. Bare SiO/sub 2/ tested in air at 308nm (20ns) typically exhibits a threshold ranging from 4 to 10 Jcm/sup ... WebJun 1, 2010 · A study was conducted to understand the effects of etch depth on the damage threshold of fused silica substrates. The study used a 355 nm, 7.5 ns, 10 Hz Nd:YAG laser to damage test fused silica ...

WebThe thresholds are sharp and reproducible. For the 8 ns pulses the bulk threshold irradiance is 4.75 ± 0.25 kW/μm2. The threshold is approximately three times higher for … WebAug 3, 2016 · After 100 min HF etching, the fused silica was removed 20 um, and from the magenta line in Fig. 5A, we can see the 0% laser damage threshold of the sample is …

WebJul 1, 2024 · The damage threshold of the gold film on fused silica was 0.64 J/cm 2, with the typical damage morphology of thermal ablation and melting; the damage threshold of the gold film on photoresist was 0.30 J/cm 2, with the typical damage morphology of blisters or peeling off. In order to better understand the impact of the substrate on the ...

WebThe essential results of a carefully controlled experimental investigation of the effect of roughness on laser-induced surface damage thresholds in fused silica are reported. …

WebNov 2, 2024 · Researchers achieve fused silica with high damage threshold by combing chemical etching and laser polishing by Zhang … bk 2 basics narre warrenWebApr 1, 2024 · The laser R-on-1 test protocol [27] was used to measure the laser damage threshold of fused silica surfaces. We incrementally ramped the laser fluence (~0.5 J/cm 2) at a repetition frequency of two shots per fluence until the damage occurred.Subsequently, another new site was shot again likewise. The experiment was … bk 2 basics melbourneWebLaser-damage thresholds of the surfaces were measured with 1064-nm 9-nsec pulses focused to small spots and with large-spot, 1064-nm, 1-nsec irradiation. ... We investigate the effect of different heat treatments on the laser-induced damage probabilities of fused silica samples. Isothermal annealing in a furnace is applied, with different ... bk2 computerWeb7 rows · Sep 7, 2024 · Thorlabs' UV Fused Silica High-Precision Windows are available in four sizes ranging from Ø1/2" to ... bk2 custom headlightsWebDec 1, 2024 · The damage thresholds of treated fused silica samples were tested with the same laser parameters. The test facility was a frequency-tripled Nd: YAG laser, which … bk1901b power supplyWebSep 19, 2011 · We present an experimental and numerical study of the damage and ablation thresholds at the surface of a dielectric material, e.g., fused silica, using short pulses … dattco plainfield ctWebApr 3, 2002 · In both cases, fused silica served as the substrate. For a fixed number of 1000 laser pulses per spot, a decrease in the damage threshold fluence of the mirror by a factor of two was observed by changing the repetition rate from 10 Hz to 1 kHz. A single 500-nm Ta 2 O 5 film shows higher damage resistance compared to the mirror. dattco mohegan sun bus schedule