Damage threshold of fused silica

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August undefined, 2024

WebSep 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 … 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 …

Laser-induced damage of fused silica at 355 nm initiated at …

WebJun 23, 2024 · Laser-induced damage threshold is the main limitation for fused silica optics in high-power laser applications. The existence of various defects near the surface … 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 ... portland state recreation center

Damage and ablation thresholds of fused-silica in

WebJan 14, 2024 · Co2+:MgAl2O4 crystals are successfully used as passive Q-switches within the cavity of erbium glass lasers. Their limited resistance to laser radiation might also put constraints on the generated output peak power. Usually, polishing of optical substrates induces a contaminated Beilby layer and damages the subsurface layer, which leads to a … WebMay 20, 2013 · Subsurface defects of fused silica optics and laser induced damage at 351 nm. Many kinds of subsurface defects are always present together in the subsurface of … 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 … optimum work sequence chart

Layer by layer exposure of subsurface defects and laser-induced damage ...

Laser Damage Threshold Calculator Edmund Optics

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 … portland state scholarship portalWebOptical properties and laser damage threshold of HfO2–SiO2 mixed composite thin films. Shuvendu Jena. 2014, Applied Optics. See Full PDF Download PDF. optimum.net sign in my account

"WebLaser Damage Threshold* 1.0J/cm 2: i. 12.7mm Broadband Mirror, 1000-1600nm, 99% Avg. Reflectivity, Fused Silica, 5mm Thk TFVMQ-12.7C05-10/16 : 12.7mm ... Fused Silica : Coating: Dielectric multi-layer coating : Incident angle: 0~45° ... " - Damage threshold of fused silica

Damage threshold of fused silica

Catastrophic failure of contaminated fused silica optics at 355 …

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 ... WebFeb 1, 2014 · The inadequate laser-induced damage threshold (LIDT) of optical elements limits the future development of high-power laser systems. ... technique of elastic magnetorheological finishing and HF etching for high-efficiency improving of the laser-induced damage threshold of fused silica optics Appl Opt. 2014 Feb 1;53(4):598-604. …

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WebNov 2, 2024 · Researchers achieve fused silica with high damage threshold by combing chemical etching and laser polishing by Zhang … WebAug 11, 1999 · Single- and multiple-shot damage thresholds and plasma-emission thresholds for fused silica and CaF2 are reported for 790 nm photons as a function of laser pulse width (190 fs – 4.5 ps). The results … Expand

WebMar 1, 2024 · We present and investigate a hybrid laser-based method of surface shaping for damage mitigation on fused silica surfaces. Damage sites were removed and precisely shaped into an optically-benign ... 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 …

WebLaser Line Plate Half-Mirrors are available for several wavelength range, made of BK7, synthetic fused silica, or CaF2, in different sizes, and R:T ratio. ... Laser Damage Threshold* 2J/cm 2: Availability: From stock *Laser Pulse width ; 10ns , Repetition frequency ; 20Hz: i. Laser Line Plate Half Mirror 50mm Diameter 308-355nm ... 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 ...

WebOct 27, 2024 · Damage threshold specifications are constant for all UV fused silica lenses, regardless of the size of the lens. Laser Induced Damage Threshold Tutorial The following is a general overview of how …

WebFeb 23, 2010 · @article{osti_1010834, title = {HF-based etching processes for improving laser damage resistance of fused silica optical surfaces}, author = {Suratwala, T I and Miller, P E and Bude, J D and Steele, R A and Shen, N and Monticelli, M V and Feit, M D and Laurence, T A and Norton, M A and Carr, C W and Wong, L L}, abstractNote = {The … portland state post bacc programsWebWe discuss the action of ultrashort Bessel laser beams in bulk fused silica, emphasizing excitation dynamics with energy localization beyond … portland state programsWebLaser Damage Threshold *1 4.0J/cm 2: Weight: 0.47kg : Availability: Please contact *1 Laser pulse width ; 10ns , Repetition frequency ; 20Hz *2 The transmittance of the beam expander differs depending on the wavelength and/or input beam diameter. optimum word scramble portland state early admissionWebDec 3, 1996 · The silica windows were then illuminated repetitively using a 3-ns, 355 nm and an 8.6-ns, 1064 nm laser. The tests were conducted at near normal incidence with particles on input and output surfaces of the windows. During the first shot, a plasma ignited at the metal particle and damage initiated on the fused silica surface. optimumshop.hrWeba 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 … portland state public healthWebLaser-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 ... optimum works handrail