Effect of surface roughness on the measurement of high power laser with a cone-shaped cavity

2006 ◽  
Author(s):  
Lei Wang ◽  
Zhaojin Yang ◽  
Gaoping Li ◽  
Yanxi Liang
Keyword(s):  
Surface Roughness ◽  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Effect Of Surface

scholarly journals Microstructural Characterization of Thermal Barrier Coatings Glazed by a High Power Laser

2016 ◽  
Vol 723 ◽  
pp. 247-251 ◽  
Author(s):  
Hong Zhou ◽  
Fei Li ◽  
Jun Wang ◽  
Bao De Sun
Keyword(s):  
Surface Roughness ◽  
Thermal Barrier Coatings ◽  
High Power ◽  
Microstructural Characterization ◽  
Ceramic Coatings ◽  
Thermal Barrier ◽  
High Power Laser ◽  
Power Laser ◽  
Barrier Coatings ◽  
Plasma Sprayed

Thermal barrier coatings have been widely used in in both energy and propulsion systems. Plasma-sprayed thermal barrier coatings have relatively high interconnected porosity and lamina structure, which bring out a low bond strength, and lead to a short thermal cycling life. Lasers can be used for modification of materials surface. In this paper, plasma-sprayed thermal barrier coatings were laser-glazed by a high power laser in order to modify the structures. The microstructure of laser-glazed TBCs is investigated. The change on surface roughness has been examined. The result indicates that a smooth and dense glazed surface with craters and a network of microcracks is obtained after laser-glazing. The laser-glazed region consists of a columnar microstructure. There are segmentation microcracks in the laser-glazed coatings, which don’t run through the coatings along thickness. Surface roughness has been reduced significantly for the laser treated ceramic coatings.

Feasibility Experiments for Underwater Shock and Bubble Generation with a High-Power Laser

1999 ◽  
Author(s):  
Theodore G. Jones ◽  
Jacob Grun ◽  
H. R. Burris ◽  
Charles Manka
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Bubble Generation ◽  
Underwater Shock

Ultra-sensitive Absorption Diagnostics of Thin Films for High-power Laser Interference Coatings

2015 ◽  
Author(s):  
Jorge G. Rocca ◽  
Oscar E. Martinez ◽  
Carmen Menoni ◽  
Esteban Domene
Keyword(s):  
Thin Films ◽  
High Power ◽  
High Power Laser ◽  
Laser Interference ◽  
Power Laser

High Power Laser Diode Arrays for Pumping Solid State Laser and Pumping Characteristics

1996 ◽  
Vol 24 (Supplement) ◽  
pp. 85-88
Author(s):  
H. Kan ◽  
T. Kanzaki ◽  
H. Miyajima ◽  
Y. Ito ◽  
K. Matsui ◽  
...  
Keyword(s):  
Solid State ◽  
Laser Diode ◽  
High Power ◽  
Solid State Laser ◽  
High Power Laser ◽  
Power Laser ◽  
State Laser ◽  
Laser Diode Arrays ◽  
High Power Laser Diode
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