High power continuous-wave 1064 nm DPSS laser for machining semiconductor and metal materials

A diode-pumped solid-state (DPSSL) laser system with 808 nm laser as pump source has been developed successfully. We used the optically anisotropic crystal Nd:YVO4 as the active medium. The threshold pump power and slope efficiency were measured and discussed. With lowly doped crystal Nd:YVO4 0.27% and concave-plane cavity, the laser showed good performance in the pumping range up to 11 W. Using the 1064 nm beam, micromachining were successfully conducted upon some normal materials such as plastic, wood; some semiconductors such as silicon and metals such as aluminum, copper, steel.

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Analysis and modeling of a high power side diode pumped solid state laser system

10.1117/12.2190069 ◽

2015 ◽

Author(s):

Tamer M. Kashef ◽

Ayman M. Mokhtar ◽

Samy A. Ghoniemy ◽

Lawrence Shah ◽

Martin Richardson

Keyword(s):

Solid State ◽

High Power ◽

Laser System ◽

Solid State Laser ◽

State Laser ◽

Diode Pumped

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An all-solid-state high power quasi-continuous-wave tunable dual-wavelength Ti:sapphire laser system using birefringence filter

Chinese Physics ◽

10.1088/1009-1963/16/7/031 ◽

2007 ◽

Vol 16 (7) ◽

pp. 1991-1995 ◽

Cited By ~ 2

Author(s):

Ding Xin ◽

Ma Hong-Mei ◽

Zou Lei ◽

Zou Yue ◽

Wen Wu-Qi ◽

...

Keyword(s):

Solid State ◽

High Power ◽

Continuous Wave ◽

Laser System ◽

Dual Wavelength ◽

Ti:Sapphire Laser

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

Crystals ◽

10.3390/cryst11020078 ◽

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.

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LD-pumped high-power continuous-wave Pr3+:YLF deep red lasers at 718.5 and 720.8 nm

Laser Physics ◽

10.1088/1555-6611/ac4099 ◽

2021 ◽

Vol 32 (2) ◽

pp. 025801

Author(s):

Xiangrui Liu ◽

Zhuang Li ◽

Chengkun Shi ◽

Bo Xiao ◽

Run Fang ◽

...

Keyword(s):

Output Power ◽

High Power ◽

Slope Efficiency ◽

Laser Emission ◽

Continuous Wave ◽

Optical Glass ◽

Maximum Output Power ◽

Glass Plate ◽

Maximum Output ◽

First Time

Abstract We demonstrated 22 W LD-pumped high-power continuous-wave (CW) deep red laser operations at 718.5 and 720.8 nm based on an a-cut Pr3+:YLF crystal. The output power of both polarized directions reached the watt-level without output power saturation. A single wavelength laser operated at 720.8 nm in the π-polarized direction was achieved, with a high output power of 4.5 W and high slope efficiency of approximately 41.5%. To the best of our knowledge, under LD-pumped conditions, the laser output power and slope efficiency are the highest at 721 nm. By using a compact optical glass plate as an intracavity etalon, we suppressed the π-polarized 720.8 nm laser emission. And σ-polarized single-wavelength laser emission at 718.5 nm was achieved, with a maximum output power of 1.45 W and a slope efficiency of approximately 17.8%. This is the first time that we have achieved the σ-polarized laser emission at 718.5 nm generated by Pr3+:YLF lasers.

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