The beam quality concept applied to high power lasers

1994 ◽  
Author(s):  
George Nemes ◽  
Joseph A. Ruff ◽  
Anthony E. Siegman
Keyword(s):  
High Power ◽  
Beam Quality ◽  
High Power Lasers

scholarly journals Optimized Growth and Laser Application of Yb:LuAG Single-Crystal Fibers by Micro-Pulling-Down Technique

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 78
Author(s):  
Anye Wang ◽  
Jian Zhang ◽  
Shuai Ye ◽  
Xiaofei Ma ◽  
Baiyi Wu ◽  
...  
Keyword(s):  
Single Crystal ◽  
High Power ◽  
Slope Efficiency ◽  
Continuous Wave ◽  
Beam Quality ◽  
Axial Direction ◽  
Optical Quality ◽  
Central Wavelength ◽  
High Power Lasers ◽  
Crystal Fibers

Single-crystal fibers (SCFs) have a great application potential in high-power lasers due to their excellent performance. In this work, high-quality and crack-free Yb3+:Lu3Al5O12 (Yb:LuAG) SCFs were successfully fabricated by the micro-pulling-down (μ-PD) technology. Based on the laser micrometer and the X-ray Laue diffraction results, these Yb:LuAG SCFs have a less than 5% diameter fluctuation and good crystallinity along the axial direction. More importantly, the distribution of Yb ions is proved to be uniform by electron probe microanalysis (EPMA) and the scanning electron microscope (SEM). In the laser experiment, the continuous-wave (CW) output power using a 1 mm diameter Yb:LuAG single-crystal fiber is determined to be 1.96 W, at the central wavelength of 1047 nm, corresponding to a slope efficiency of 13.55%. Meanwhile, by applying a 3 mm diameter Yb:LuAG SCF, we obtain a 4.7 W CW laser output at 1049 nm with the slope efficiency of 22.17%. The beam quality factor M2 is less than 1.1 in both conditions, indicating a good optical quality of the grown fiber. Our results show that the Yb:LuAG SCF is a potential solid-state laser gain medium for 1 μm high-power lasers.

Effect of thermal distortions of cavity mirrors on output beam quality of high power lasers

2013 ◽  
Vol 25 (5) ◽  
pp. 1134-1138
Author(s):  
韩开 Han Kai ◽  
吴双 Wu Shuang ◽  
张彬 Zhang Bin
Keyword(s):  
High Power ◽  
Beam Quality ◽  
Output Beam ◽  
High Power Lasers

3  ×  1 all-fiber signal combiner with high beam quality for high-power lasers

Laser Physics ◽  
2019 ◽  
Vol 30 (2) ◽  
pp. 025102
Author(s):  
H Yang ◽  
C M Lei ◽  
W J Wu ◽  
Z L Chen ◽  
Z F Wang ◽  
...  
Keyword(s):  
High Power ◽  
Beam Quality ◽  
High Power Lasers ◽  
High Beam ◽  
High Beam Quality

Evaluation of beam quality for high-power lasers

2007 ◽  
Author(s):  
Hongru Yang ◽  
Lei Wu ◽  
Xuexin Wang ◽  
Jifang Shi ◽  
Gaoping Li ◽  
...  
Keyword(s):  
High Power ◽  
Beam Quality ◽  
High Power Lasers

scholarly journals Beam-Quality Measurement of High-Power Lasers for Material Processing Applications.

1998 ◽  
Vol 26 (10) ◽  
pp. 730-734 ◽  
Author(s):  
Koji YASUI ◽  
Tetsuo KOJIMA ◽  
Shuichi FUJIKAWA ◽  
Yushi TAKENAKA ◽  
Jyunichi NISHIMAE
Keyword(s):  
Material Processing ◽  
High Power ◽  
Beam Quality ◽  
Quality Measurement ◽  
High Power Lasers

Application of high-power lasers to study matter at ultrahigh pressures

1984 ◽  
Vol 142 (3) ◽  
pp. 395 ◽  
Author(s):  
S.I. Anisimov ◽  
A.M. Prokhorov ◽  
Vladimir E. Fortov
Keyword(s):  
High Power ◽  
High Power Lasers
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