Numerical investigation of growth model for laser-induced damage in optics under high power laser irradiation

Optik ◽  
2019 ◽  
Vol 194 ◽  
pp. 163053
Author(s):  
Yi Chen ◽  
Sensen Li ◽  
Xiangyu Qu ◽  
Pengyuan Du ◽  
Lei Ding ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Laser Irradiation ◽  
Growth Model ◽  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Induced Damage

scholarly journals Observation of the shock wave propagation induced by a high-power laser irradiation into an epoxy material

2013 ◽  
Vol 46 (23) ◽  
pp. 235501 ◽  
Author(s):  
Romain Ecault ◽  
Laurent Berthe ◽  
Michel Boustie ◽  
Fabienne Touchard ◽  
Emilien Lescoute ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Laser Irradiation ◽  
High Power ◽  
Shock Wave Propagation ◽  
High Power Laser ◽  
Power Laser ◽  
Epoxy Material

Phase characteristic of phase-only spatial light modulator under high-power laser irradiation

2021 ◽  
Author(s):  
Yu Takiguchi ◽  
Hiroshi Tanaka ◽  
Tsubasa Watanabe ◽  
Yoshiyuki Ohtake ◽  
Haruyoshi Toyoda
Keyword(s):  
Laser Irradiation ◽  
High Power ◽  
Spatial Light Modulator ◽  
Phase Characteristic ◽  
High Power Laser ◽  
Power Laser ◽  
Light Modulator

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.

scholarly journals Revealing the nature of morphological changes in carbon nanotube-polymer saturable absorber under high-power laser irradiation

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Maria Chernysheva ◽  
Mohammed Al Araimi ◽  
Graham A. Rance ◽  
Nicola J. Weston ◽  
Baogui Shi ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Laser Irradiation ◽  
Saturable Absorber ◽  
High Power ◽  
Morphological Changes ◽  
High Power Laser ◽  
Power Laser

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

Diffuse reflectivity of gold plating with high power laser irradiation

2015 ◽  
Author(s):  
Yong Wu ◽  
Lei Zhang ◽  
Pengling Yang ◽  
Zhenbao Wang ◽  
Mengmeng Tao ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Gold Plating ◽  
Diffuse Reflectivity

Acoustic signal investigation in the ice melting under high-power laser irradiation at a wavelength of 2940 nm

2018 ◽  
Vol 48 (6) ◽  
pp. 516-520
Author(s):  
N N Il'ichev ◽  
A V Sidorin ◽  
E S Gulyamova ◽  
P P Pashinin
Keyword(s):  
Laser Irradiation ◽  
High Power ◽  
Acoustic Signal ◽  
Ice Melting ◽  
High Power Laser ◽  
Power Laser

Observation of Shrinking and Reformation of Shockley Stacking Faults by PL Mapping

2006 ◽  
Vol 527-529 ◽  
pp. 375-378 ◽  
Author(s):  
Toshiyuki Miyanagi ◽  
Hidekazu Tsuchida ◽  
Isaho Kamata ◽  
Tomonori Nakamura ◽  
R. Ishii ◽  
...  
Keyword(s):  
High Temperature ◽  
Laser Irradiation ◽  
High Power ◽  
Stacking Faults ◽  
High Temperature Annealing ◽  
High Power Laser ◽  
Power Laser ◽  
Before And After ◽  
Basal Plane Dislocation ◽  
Pl Mapping

We provide evidence of shrinking of Shockley-type stacking faults (SSFs) in the SiC epitaxial layer by high temperature annealing. Photoluminescence (PL) mapping in combination with high-power laser irradiation makes it possible to investigate the formation of SSFs, which lie between a pair of partial dislocations formed by dissociation of a basal plane dislocation (BPD), without fabrication of pin diodes. Using this technique, we investigated the annealing effect on SSFs. Comparing before and after annealing at 600°C for 10 min, it became obvious that high-temperature annealing results in shrinking of the faulted area of the SSFs. The SSFs form into the same features as those before annealing when high-power laser irradiation is performed again on the same area. This result shows that the faulted area of SSFs shrinks by 600°C annealing but the nuclei of SSFs (BPDs) do not disappear.

scholarly journals The beam coherence simulation of 1-dimensional nano-scale photocathode under high power laser irradiation

2017 ◽  
Vol 131 ◽  
pp. 342-347
Author(s):  
T. Shibuya ◽  
N. Hayashizaki ◽  
D. Satoh ◽  
M. Yoshida
Keyword(s):  
Laser Irradiation ◽  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Nano Scale
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