Damage threshold of fused silica

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August undefined, 2024

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 ... 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 ...

Advanced Mitigation Process (AMP) for Improving Laser Damage …

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. … 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 ... somers ct middle school

Catastrophic failure of contaminated fused silica optics at 355 …

WebJan 22, 2024 · Fused silica samples (Corning 7980, 50 mm in diameter, 5 mm thick) were manufactured with an optimized grinding process that reduces the subsurface damage 26, followed by a pre-polishing and a ... 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 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 small caps shortcut pc

Effects of substrate on the femtosecond laser-induced damage …

Femtosecond laser damage of a high reflecting mirror

WebWe discuss the action of ultrashort Bessel laser beams in bulk fused silica, emphasizing excitation dynamics with energy localization beyond … 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 … somers district 29WebOct 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. small caps serif fonts

"WebDec 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 … " - Damage threshold of fused silica

Damage threshold of fused silica

The effect of lattice temperature on surface damage in fused silica ...

WebApr 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. 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 ...

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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 ... 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 …

WebMay 20, 2013 · The results show that Cerium element and SSD both have a good correlation with laser-induced damage thresholds and damage density. Research results evaluate process technology of fused silica optics in China at present. Furthermore, the results can provide technique support for improving laser induced damage performance … 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 ...

WebDec 19, 2024 · Under the irradiation of ns laser, the strained Si-O-Si bond is an absorptive precursor, which induces damages and leads to the reduction of laser damage … WebLaser 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.

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 …

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 … small caps shortcut keyWebThe essential results of a carefully controlled experimental investigation of the effect of roughness on laser-induced surface damage thresholds in fused silica are reported. Sets of fused silica samples were subjected to several surface preparations such that rms surface roughness values within each set varied over two orders of magnitude. A plot of … somerseaze carbis bayWebHigh damage threshold; Select fused silica; Low wavefront distortion; Hard refractory coatings; Ultrafast Plate Beamsplitters. Series Features; FemtoOptics™ P Polarized Beamsplitters: Optimized for P polarization at 45 ͦ angle of incidence; Choice of 67%, 76%, 80% or 90% splitting ratios; small caps stocks performance todayWebApr 20, 1998 · Scratches of measured width were produced on the surface of a IV grade fused silica window using a diamond tip. Two scratch morphologies were observed: plastic and brittle. The scratches were irradiated with a 355 nm laser pulse. The laser-induced damage threshold (LIDT) of the unscratched output surface was 15 J/cm2 at 3-ns. The … somer service phone numberWebThe essential results of a carefully controlled experimental investigation of the effect of roughness on laser-induced surface damage thresholds in fused silica are reported. … small caps times new romanWebOptical properties and laser damage threshold of HfO2–SiO2 mixed composite thin films. Shuvendu Jena. 2014, Applied Optics. See Full PDF Download PDF. small capstan latheWebDec 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. somers electrician