Laser damage mechanism of porous Al2O3 films prepared by a two-step anodization method

2012 ◽  
Vol 285 (6) ◽  
pp. 1335-1340 ◽  
Author(s):  
Zhilin Xia ◽  
Rui Wu ◽  
Hu Wang
Keyword(s):  
Damage Mechanism ◽  
Laser Damage ◽  
Al2o3 Films ◽  
Anodization Method

Laser damage mechanism and in-situ observation of stacking fault relaxation in β-Ga2O3 single crystal by EFG method

CrystEngComm ◽  
2021 ◽  
Author(s):  
Bo Fu ◽  
Gaohang He ◽  
Wenxiang Mu ◽  
Yang Li ◽  
Boyuan Feng ◽  
...  
Keyword(s):  
Single Crystal ◽  
Light Field ◽  
Damage Mechanism ◽  
Stacking Fault ◽  
High Light ◽  
Laser Damage ◽  
In Situ Observation ◽  
Structure Destruction

We designed an original and effective method to study the laser damage mechanism of β-Ga2O3 single crystal grown by edge-defined film-fed growth (EFG). The structure destruction under high light field...

scholarly journals Investigation of 1064-nm laser damage mechanism of neutral density filter

2012 ◽  
Vol 61 (7) ◽  
pp. 076102
Author(s):  
Liu Yan-Yan ◽  
Han Jing-Hua ◽  
Duan Tao ◽  
Niu Rui-Hua ◽  
Sun Nian-Chun ◽  
...  
Keyword(s):  
Damage Mechanism ◽  
Laser Damage ◽  
Neutral Density ◽  
Neutral Density Filter ◽  
Density Filter

Continuous-wave laser damage mechanism of a spectral combining grating

2019 ◽  
Vol 58 (10) ◽  
pp. 2551
Author(s):  
Jiao Xu ◽  
Junming Chen ◽  
Peng Chen ◽  
Yonglu Wang ◽  
Yibin Zhang ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Damage Mechanism ◽  
Laser Damage ◽  
Continuous Wave Laser ◽  
Wave Laser

Study on Mechanism of Laser Thermal Damage on Piston

2011 ◽  
Vol 228-229 ◽  
pp. 500-504 ◽  
Author(s):  
Ming Pang ◽  
Zhen Tao Liu ◽  
Jian Song Tan ◽  
Xiu Bo Liu
Keyword(s):  
Thermal Shock ◽  
Thermal Damage ◽  
Energy Dispersive Spectrometer ◽  
Intermetallic Phase ◽  
Damage Mechanism ◽  
Laser Damage ◽  
High Power Laser ◽  
Power Laser ◽  
Scanning Electron ◽  
Al Matrix

The experiments of thermal shock damage on piston were conducted by shaped high power laser. Damage mechanism of thermal shock specimen was characterized by scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS). The mechanical properties of thermal shock specimen were evaluated by microhardness. The corresponding mechanisms were discussed in detail. The results show that cracks originated from the interface of Al-matrix and intermetallic phase due to the thermal and mechanical misfit between these brittle components of the microstructure and the surrounding ductile matrix. Oxides of thermal shock crack can accelerate the damage of piston. There is a drop in the hardness of piston at all locations after thermal shock tests.

Investigation on Infrared Continuous-Wave Laser Damage Mechanism of Polyurethane-Based Black Paint

2011 ◽  
Vol 38 (3) ◽  
pp. 0302002
Author(s):  
吴丽雄 Wu Lixiong ◽  
叶锡生 Ye Xisheng ◽  
刘泽金 Liu Zejin
Keyword(s):  
Continuous Wave ◽  
Damage Mechanism ◽  
Laser Damage ◽  
Continuous Wave Laser ◽  
Black Paint ◽  
Wave Laser

Mitigation of a novel phase-defect-induced laser damage mechanism on NIF final optics

2018 ◽  
Author(s):  
Clay Widmayer ◽  
Michael C. Nostrand ◽  
Phil Miller ◽  
Pamela K. Whitman ◽  
Christopher W. Carr ◽  
...  
Keyword(s):  
Damage Mechanism ◽  
Laser Damage

Laser Induced Damage Threshold Measurements at the Microscopic Level

1992 ◽  
Vol 285 ◽  
Author(s):  
Allen D. Zwan ◽  
David R. Miller
Keyword(s):  
Single Crystal Silicon ◽  
Damage Threshold ◽  
Damage Mechanism ◽  
Laser Damage Threshold ◽  
Laser Damage ◽  
Plasma Damage ◽  
Crystal Silicon ◽  
Thermally Induced ◽  
Laser Induced Damage

ABSTRACTWe have (tudied the laser damage threshold to silver films (500Å - 1000Å) grown on single crystal silicon <100>, in a newly developed laser damage UHV system at pressures of 10−1 torr. A 1.06μm Nd:Glass laser is used to damage the mirror surfaces in 1-on-1 pulse studies. In-situ damage characterization includes Auger, reflectivity of the primary beam, diffuse scattering of a helium-neon laser, and mass spectrometry detection of desorbed surface species. External characterization includes optical microscopy and SEM. All in-situ damage probes are well correlated and baseline damage occurs at fluences near 3.4 MW/cm2. Time-of-flight to the mass spectrometer shows ejected particles with energies in the 5 to 10 eV range indicating a plasma damage mechanism. Prior to typical thermally induced damage the external microscopy shows well defined precursor morphology changes which appear as feather-like microstructure at the submicron level.

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