Analysis for damaged surface of Fused Silica with enhanced damage resistance after Magnetic Field-Assisted Finishing

2021 ◽  
Author(s):  
Akito Uemura ◽  
Haruki Marui ◽  
Yuya Tsunezuka ◽  
Daichi Shima ◽  
Tomosumi Kamimura ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Fused Silica ◽  
Damage Resistance

scholarly journals Combined laser and magnetic field treatment of YFeO3—containing films grown by spray-pyrolysis

2004 ◽  
Vol 2 (1) ◽  
pp. 188-195
Author(s):  
N. Mihailov ◽  
O. Vankov ◽  
N. Petrova ◽  
D. Kovacheva
Keyword(s):  
Magnetic Field ◽  
Spray Pyrolysis ◽  
Pulse Duration ◽  
Fused Silica ◽  
Crystallite Sizes ◽  
Citric Complexes ◽  
Magnetic Field Treatment ◽  
Glycol Solution ◽  
The Magnetic Field ◽  
Post Deposition

AbstractThin films (50–1200 nm) of YFeO3 were deposited on fused silica substrates by spray-pyrolysis using ethylene glycol solution of Y-Fe(III) citric complexes. The films were post deposition annealed at 750°C in static air for 2 h. Films obtained in this way were afterwards irradiated by a burst mode operated Nd-YAG laser (pulse energy 650 mJ, pulse duration 700 μs, energy density 110 mJ/cm2). The laser’s onset was synchronized with that of a magnetic field pulse of nearly square shape (magnetic induction 0.5 T, pulse duration 900 μs). The samples were placed normally to the direction of the magnetic field. The treatment does not affect the phase composition of the film but significantly increases the crystallite sizes of the phases presenting in the sample. The saturation magnetization of the films decreases as a result of the laser and magnetic field treatment and the coercive force increases by 50%.

scholarly journals Full Aperture CO2Laser Process to Improve Laser Damage Resistance of Fused Silica Optical Surface

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Wei Liao ◽  
Chuanchao Zhang ◽  
Xiaofen Sun ◽  
Lijuan Zhang ◽  
Xiaodong Yuan
Keyword(s):  
Damage Threshold ◽  
Fused Silica ◽  
Processing Temperature ◽  
Test Results ◽  
Optical Surface ◽  
Improved Method ◽  
Damage Resistance ◽  
Scanning Velocity ◽  
High Laser ◽  
Laser Flux

An improved method is presented to scan the full-aperture optical surface rapidly by using galvanometer steering mirrors. In contrast to the previous studies, the scanning velocity is faster by several orders of magnitude. The velocity is chosen to allow little thermodeposition thus providing small and uniform residual stress. An appropriate power density is set to obtain a lower processing temperature. The proper parameters can help to prevent optical surface from fracturing during operation at high laser flux. S-on-1 damage test results show that the damage threshold of scanned area is approximately 40% higher than that of untreated area.

Effects of Wet Chemical Etching on Scratch Morphology and Laser Damage Resistance of Fused Silica

Silicon ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 425-432 ◽  
Author(s):  
Hui Ye ◽  
Yaguo Li ◽  
Qiao Xu ◽  
Wei Yang ◽  
Chen Jiang
Keyword(s):  
Chemical Etching ◽  
Fused Silica ◽  
Laser Damage ◽  
Damage Resistance ◽  
Wet Chemical ◽  
Wet Chemical Etching

Research on laser-induced damage resistance of fused silica optics by the fluid jet polishing method

2016 ◽  
Vol 55 (9) ◽  
pp. 2252 ◽  
Author(s):  
Liang Lv ◽  
Ping Ma ◽  
Jinyong Huang ◽  
Xiang He ◽  
Chao Cai ◽  
...  
Keyword(s):  
Fused Silica ◽  
Damage Resistance ◽  
Laser Induced Damage

scholarly journals Argon plasma etching of fused silica substrates for manufacturing high laser damage resistance optical interference coatings

2017 ◽  
Vol 7 (10) ◽  
pp. 3598 ◽  
Author(s):  
Kęstutis Juškevičius ◽  
Rytis Buzelis ◽  
Giedrius Abromavičius ◽  
Romanas Samuilovas ◽  
Saulė Abbas ◽  
...  
Keyword(s):  
Plasma Etching ◽  
Argon Plasma ◽  
Fused Silica ◽  
Laser Damage ◽  
Optical Interference ◽  
Damage Resistance ◽  
High Laser ◽  
Silica Substrates

scholarly journals Effects of deep wet etching in HF/HNO_3 and KOH solutions on the laser damage resistance and surface quality of fused silica optics at 351 nm

2017 ◽  
Vol 25 (5) ◽  
pp. 4607 ◽  
Author(s):  
Mathilde Pfiffer ◽  
Philippe Cormont ◽  
Evelyne Fargin ◽  
Bruno Bousquet ◽  
Marc Dussauze ◽  
...  
Keyword(s):  
Surface Quality ◽  
Fused Silica ◽  
Wet Etching ◽  
Laser Damage ◽  
Damage Resistance

The effect of dynamic etching on surface quality and laser damage resistance for fused silica optics

2017 ◽  
Author(s):  
Zhiqiang Wang ◽  
Hongwei Yan ◽  
Xiaodong Yuan ◽  
Yuan Li ◽  
Ke Yang ◽  
...  
Keyword(s):  
Surface Quality ◽  
Fused Silica ◽  
Laser Damage ◽  
Damage Resistance
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