scholarly journals High power and high energy monolithic single frequency 2 μm nanosecond pulsed fiber laser by using large core Tm-doped germanate fibers: experiment and modeling

2012 ◽  
Vol 20 (15) ◽  
pp. 16410 ◽  
Author(s):  
Qiang Fang ◽  
Wei Shi ◽  
Khanh Kieu ◽  
Eliot Petersen ◽  
Arturo Chavez-Pirson ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
High Energy ◽  
Single Frequency ◽  
Large Core ◽  
Pulsed Fiber Laser

scholarly journals High power and high efficiency single-frequency 1030 nm DFB fiber laser

2022 ◽  
Vol 145 ◽  
pp. 107519
Author(s):  
Yue Tao ◽  
Song Zhang ◽  
Man Jiang ◽  
Can Li ◽  
Pu Zhou ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
High Efficiency ◽  
Single Frequency

Single-frequency, high-power, continuous-wave fiber-laser-pumped Ti:sapphire laser

2011 ◽  
Vol 51 (1) ◽  
pp. 15 ◽  
Author(s):  
Suddapalli Chaitanya Kumar ◽  
Goutam Kumar Samanta ◽  
Kavita Devi ◽  
Stefano Sanguinetti ◽  
Majid Ebrahim-Zadeh
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Continuous Wave ◽  
Single Frequency ◽  
Ti:Sapphire Laser

A new AOM used for all-fiber high power pulsed fiber laser

2008 ◽  
Author(s):  
Dapeng Yan ◽  
Libo Li ◽  
Xiaoxu Liu
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Pulsed Fiber Laser

Frequency tuning and modulation of a compact high-power single-frequency Er:Yb co-doped fiber laser

2003 ◽  
Author(s):  
J. Geng ◽  
Ch. Spiegeberg ◽  
Y. Hu ◽  
T. Luo ◽  
Y. Kaneda ◽  
...  
Keyword(s):  
Fiber Laser ◽  
High Power ◽  
Frequency Tuning ◽  
Single Frequency ◽  
Co Doped

Elucidation of Welding Stability Based on Keyhole Configuration during High-Power Fiber Laser Welding

2011 ◽  
Vol 314-316 ◽  
pp. 941-944 ◽  
Author(s):  
Xiang Dong Gao ◽  
Qian Wen ◽  
Seiji Katayama
Keyword(s):  
Laser Welding ◽  
Fiber Laser ◽  
High Power ◽  
Continuous Wave ◽  
High Energy ◽  
High Energy Density ◽  
Deep Penetration ◽  
Characteristic Parameters ◽  
Fiber Laser Welding ◽  
Welding Stability

During deep penetration laser welding, a keyhole is formed in the molten pool due to the intense recoil pressure of evaporation. The formation of the keyhole leads to a deep penetration weld with a high aspect ratio and this is the most advantageous feature of welding by high-energy-density beams. The configuration and characteristics of a keyhole are related to the welding stability. In a fiber laser butt-joint welding of Type 304 austenitic stainless steel plate with a high power 10 kW continuous wave fiber laser, an infrared sensitive high-speed video camera was used to capture the dynamic images of the molten pools. The configurations of a keyhole were analyzed through image processing techniques such as median filtering, wiener filtering and gray level threshold segmentation to obtain the edge of a keyhole. The width and the area of a keyhole were defined as the keyhole characteristic parameters, and the deviation between the laser beam and weld center as a parameter reflecting the welding stability. By analyzing the change of the keyhole characteristic parameters during welding process, it was found that these parameters were related to the welding stability. Welding experimental results and analysis of the keyhole characteristic parameters confirmed that the welding stability could be monitored and distinguished by a keyhole configuration during high-power fiber laser welding.

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