scholarly journals Growth behavior of laser-induced damage on fused silica optics under UV, ns laser irradiation

2010 ◽  
Vol 18 (19) ◽  
pp. 19966 ◽  
Author(s):  
Raluca A. Negres ◽  
Mary A. Norton ◽  
David A. Cross ◽  
Christopher W. Carr
Keyword(s):  
Laser Irradiation ◽  
Fused Silica ◽  
Growth Behavior ◽  
Laser Induced Damage

scholarly journals Growth model for laser-induced damage on the exit surface of fused silica under UV, ns laser irradiation

2014 ◽  
Vol 22 (4) ◽  
pp. 3824 ◽  
Author(s):  
Raluca A. Negres ◽  
David A. Cross ◽  
Zhi M. Liao ◽  
Manyalibo J. Matthews ◽  
Christopher W. Carr
Keyword(s):  
Laser Irradiation ◽  
Growth Model ◽  
Fused Silica ◽  
Exit Surface ◽  
Laser Induced Damage

Growth of laser-induced damage in fused silica under nanosecond laser irradiation

2012 ◽  
Vol 24 (5) ◽  
pp. 1057-1062 ◽  
Author(s):  
邱荣 Qiu Rong ◽  
王俊波 Wang Junbo ◽  
任欢 Ren Huan ◽  
李晓红 Li Xiaohong ◽  
施鹏程 Shi Pengcheng ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Fused Silica ◽  
Nanosecond Laser ◽  
Laser Induced Damage

Laser-induced damage growth of large-aperture fused silica optics under high-fluence 351 nm laser irradiation

Optik ◽  
2021 ◽  
Vol 226 ◽  
pp. 165549
Author(s):  
Xiangxu Chai ◽  
Ping Li ◽  
Junpu Zhao ◽  
Guanzhong Wang ◽  
Deyan Zhu ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Fused Silica ◽  
High Fluence ◽  
Damage Growth ◽  
Large Aperture ◽  
Laser Induced Damage

scholarly journals Effect of thermal anneal on growth behavior of laser-induced damage sites on the exit surface of fused silica

2013 ◽  
Vol 3 (6) ◽  
pp. 765 ◽  
Author(s):  
Rajesh N. Raman ◽  
Raluca A. Negres ◽  
Manyalibo J. Matthews ◽  
Christopher W. Carr
Keyword(s):  
Fused Silica ◽  
Growth Behavior ◽  
Exit Surface ◽  
Laser Induced Damage

scholarly journals Er:YAG laser-induced damage to a dental composite in simulated clinical scenarios for inadvertent irradiation: an in vitro study

2021 ◽  
Author(s):  
Katharina Kuhn ◽  
Carmen U. Schmid ◽  
Ralph G. Luthardt ◽  
Heike Rudolph ◽  
Rolf Diebolder
Keyword(s):  
Laser Irradiation ◽  
Laser Fluence ◽  
Ablation Threshold ◽  
Er:Yag Laser ◽  
In Vitro Study ◽  
Vitro Study ◽  
Crater Diameter ◽  
Clinical Scenarios ◽  
Laser Induced Damage

AbstractInadvertent Er:YAG laser irradiation occurs in dentistry and may harm restorative materials in teeth. The aim of this in vitro study was to quantify Er:YAG laser-induced damage to a nanohybrid composite in simulated clinical scenarios for inadvertent direct and indirect (reflection) laser irradiation. The simulation was performed by varying the output energy (OE;direct˃indirect) reaching the specimen and the operating distance (OD;direct˂indirect). Composite specimens were irradiated by an Er:YAG laser. The ablation threshold was determined and clinically relevant parameters were applied (n = 6 for each OE/OD combination) for direct (OE: 570 mJ/OD: 10 mm, OE: 190 mJ/OD: 10 mm) and indirect irradiation (OE: 466 mJ/OD: 15 mm, OE: 57 mJ/OD: 15 mm, OE: 155 mJ/OD: 15 mm, OE: 19 mJ/OD: 15 mm). The extent of damage in the form of craters was evaluated using a laser scanning microscope (LSM) and a conventional light microscope (LM). The ablation threshold was determined to be 2.6 J/cm2. The crater diameter showed the highest value (LM: 1075 ± 18 µm/LSM: 1082 ± 17 µm) for indirect irradiation (reflectant:dental mirror) (OE: 466 mJ/OD: 15 mm). The crater depth showed the highest and comparable value for direct (OE: 570 mJ/OD: 10 mm; LSM: 89 ± 2 µm) and indirect irradiation (OE: 466 mJ/OD: 15 mm; LSM: 90 ± 4 µm). For each OD, the crater diameter, depth, and volume increased with higher laser fluence. However, the OD—and thus the laser spot diameter—also had an enlarging effect. Thus, indirect irradiation (reflectant:dental mirror) with only 47% of the laser fluence of direct irradiation led to a larger diameter and a comparable depth. The three-dimensional extent of the crater was large enough to cause roughening, which may lead to plaque accumulation and encourage caries, gingivitis, and periodontitis under clinical conditions. Clinicians should be aware that reflected irradiation can still create such craters.

Influence of secondary treatment with CO 2 laser irradiation for mitigation site on fused silica surface

2016 ◽  
Vol 25 (10) ◽  
pp. 108104
Author(s):  
Yong Jiang ◽  
Qiang Zhou ◽  
Rong Qiu ◽  
Xiang Gao ◽  
Hui-Li Wang ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Silica Surface ◽  
Fused Silica ◽  
Secondary Treatment

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

1998 ◽  
Author(s):  
Alberto Salleo ◽  
Francois Y. Genin ◽  
J. M. Yoshiyama ◽  
Christopher J. Stolz ◽  
Mark R. Kozlowski
Keyword(s):  
Fused Silica ◽  
Laser Induced Damage

Transient 210-nm absorption in fused silica induced by high-power UV laser irradiation

1991 ◽  
Vol 16 (12) ◽  
pp. 940 ◽  
Author(s):  
Norbert Leclerc ◽  
Stephan Thomas ◽  
Heinz Fabian ◽  
Christoph Pfleiderer ◽  
Hermine Hitzler ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
High Power ◽  
Fused Silica ◽  
Uv Laser
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