Laser-induced damage of fused silica on high-power laser: beam intensity modulation, optics defect, contamination

2015 ◽  
Author(s):  
Dongfeng Zhao ◽  
Mingyin Sun ◽  
Rong Wu ◽  
Xinqiang Lu ◽  
Zunqi Lin ◽  
...  
Keyword(s):  
Laser Beam ◽  
High Power ◽  
Fused Silica ◽  
Intensity Modulation ◽  
Beam Intensity ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Beam Intensity ◽  
Laser Induced Damage

Research on High-Power Laser Induced Damage of Large Aperture Fused Silica

2009 ◽  
Vol 29 (3) ◽  
pp. 756-760 ◽  
Author(s):  
唐顺兴 Tang Shunxing ◽  
欧阳小平 Ouyang Xiaoping ◽  
朱宝强 Zhu Baoqiang ◽  
林尊琪 Lin Zunqi
Keyword(s):  
High Power ◽  
Fused Silica ◽  
High Power Laser ◽  
Power Laser ◽  
Large Aperture ◽  
Laser Induced Damage

scholarly journals Hexagonal boron nitride nanosheets incorporated antireflective silica coating with enhanced laser-induced damage threshold

2018 ◽  
Vol 6 ◽  
Author(s):  
Jing Wang ◽  
Chunhong Li ◽  
Wenjie Hu ◽  
Wei Han ◽  
Qihua Zhu ◽  
...  
Keyword(s):  
Boron Nitride ◽  
High Power ◽  
Damage Threshold ◽  
Fused Silica ◽  
High Power Laser ◽  
Power Laser ◽  
Silica Substrate ◽  
Laser Systems ◽  
Laser Induced Damage ◽  
Ar Coating

Boron nitride (BN) nanosheets incorporated silica antireflective (AR) coating was successfully prepared on fused silica substrate to improve the antilaser-damage ability of transmissive optics used in high-power laser systems. The BN nanosheets were obtained by urea assisted solid exfoliation, and then incorporated into basic-catalyzed silica sols without any further treatment. The transmission electron microscope (TEM) images indicated that the BN nanosheets generally consisted of 2–10 layers. The antireflective BN/$\text{SiO}_{2}$ coating exhibited excellent transmittance as high as 99.89% at 351 nm wavelength on fused silica substrate. The thermal conductivity $0.135~\text{W}\cdot \text{m}^{-1}\cdot \text{K}^{-1}$ of the BN/$\text{SiO}_{2}$ coating with 10% BN addition was about 23% higher than $0.11~\text{W}\cdot \text{m}^{-1}\cdot \text{K}^{-1}$ of the pure $\text{SiO}_{2}$ AR coating. The laser-induced damage threshold (LIDT) of that BN/$\text{SiO}_{2}$ coating is also 23.1% higher than that of pure $\text{SiO}_{2}$ AR coating. This research provides a potential application of BN/$\text{SiO}_{2}$ coatings in high-power laser systems.

scholarly journals Laser-induced damage growth of fused silica at 351 nm on a large-aperture high-power laser facility

2016 ◽  
Vol 65 (24) ◽  
pp. 246102
Author(s):  
Han Wei ◽  
Feng Bin ◽  
Zheng Kui-Xing ◽  
Zhu Qi-Hua ◽  
Zheng Wan-Guo ◽  
...  
Keyword(s):  
High Power ◽  
Fused Silica ◽  
High Power Laser ◽  
Damage Growth ◽  
Power Laser ◽  
Large Aperture ◽  
Laser Facility ◽  
Laser Induced Damage

Use of diffraction fringes induced by a knife-edge to characterize a high power laser beam

1993 ◽  
Vol 24 (5) ◽  
pp. 193-199
Author(s):  
L Junchang ◽  
C Vialle ◽  
J Merlin
Keyword(s):  
Laser Beam ◽  
High Power ◽  
Knife Edge ◽  
High Power Laser ◽  
Power Laser

Improvement of Build Speed and Quality of H13 Tool Steel Processed by Laser-Beam Powder Bed Fusion with a High-Power Laser

2021 ◽  
Vol 68 (10) ◽  
pp. 415-421
Author(s):  
Takashi MIZOGUCHI ◽  
Takaya NAGAHAMA ◽  
Makoto TANO ◽  
Shigeru MATSUNAGA ◽  
Takayuki YOSHIMI ◽  
...  
Keyword(s):  
Laser Beam ◽  
Tool Steel ◽  
High Power ◽  
Powder Bed Fusion ◽  
High Power Laser ◽  
Power Laser ◽  
Powder Bed ◽  
H13 Tool Steel

ALD anti-reflection coatings at 1ω, 2ω, 3ω, and 4ω for high-power ns-laser application

2018 ◽  
Vol 7 (1-2) ◽  
pp. 23-31 ◽  
Author(s):  
Hao Liu ◽  
Lars Jensen ◽  
Ping Ma ◽  
Detlev Ristau
Keyword(s):  
High Power ◽  
High Surface ◽  
Laser System ◽  
Damage Threshold ◽  
Atomic Layer ◽  
Intensity Difference ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Applications ◽  
Laser Induced Damage

AbstractAtomic layer deposition (ALD) facilitates the deposition of coatings with precise thickness, high surface conformity, structural uniformity, and nodular-free structure, which are properties desired in high-power laser coatings. ALD was studied to produce uniform and stable Al2O3and HfO2single layers and was employed to produce anti-reflection coatings for the harmonics (1ω, 2ω, 3ω, and 4ω) of the Nd:YAG laser. In order to qualify the ALD films for high-power laser applications, the band gap energy, absorption, and element content of single layers were characterized. The damage tests of anti-reflection coatings were carried out with a laser system operated at 1ω, 2ω, 3ω, and 4ω, respectively. The damage mechanism was discussed by analyzing the damage morphology and electric field intensity difference. ALD coatings exhibit stable growth rates, low absorption, and rather high laser-induced damage threshold (LIDT). The LIDT is limited by HfO2as the employed high-index material. These properties indicate the high versatility of ALD films for applications in high-power coatings.

On the Interaction of High-Power Laser Beam with Metal Targets

1984 ◽  
pp. 681-691
Author(s):  
M. Cantello ◽  
V. Donati ◽  
L. Garifo ◽  
R. Menin ◽  
F. Pandarese ◽  
...  
Keyword(s):  
Laser Beam ◽  
High Power ◽  
High Power Laser ◽  
Power Laser

Temporal wavefront stability of an ultrafast high-power laser beam

2009 ◽  
Vol 48 (4) ◽  
pp. 770 ◽  
Author(s):  
Juan M. Bueno ◽  
Brian Vohnsen ◽  
Luis Roso ◽  
Pablo Artal
Keyword(s):  
Laser Beam ◽  
High Power ◽  
High Power Laser ◽  
Power Laser
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