High power and beam quality continuous-wave Nd:GdVO_4 laser in-band diode-pumped at 912  nm

2017 ◽  
Vol 5 (4) ◽  
pp. 346 ◽  
Author(s):  
Mohammad Nadimi ◽  
Tanant Waritanant ◽  
Arkady Major
Keyword(s):  
High Power ◽  
Continuous Wave ◽  
Beam Quality ◽  
Diode Pumped

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.

High power diode-pumped continuous wave and Q-switch operation of Tm,Ho:YVO4 laser

2010 ◽  
Vol 7 (12) ◽  
pp. 857-861 ◽  
Author(s):  
B.Q. Yao ◽  
G. Li ◽  
P.B. Meng ◽  
G.L. Zhu ◽  
Y.L. Ju ◽  
...  
Keyword(s):  
High Power ◽  
Continuous Wave ◽  
Switch Operation ◽  
Diode Pumped ◽  
Power Diode

Four-wave mixing effect on high-power continuous-wave all-fiber lasers

2018 ◽  
Vol 32 (23) ◽  
pp. 1850275
Author(s):  
Jinkun Zheng ◽  
Wei Zhao ◽  
Baoyin Zhao ◽  
Zhe Li ◽  
Gang Li ◽  
...  
Keyword(s):  
High Power ◽  
Fiber Lasers ◽  
Continuous Wave ◽  
Beam Quality ◽  
Matching Condition ◽  
Four Wave Mixing ◽  
Theoretical Description ◽  
Phase Matching ◽  
Wave Mixing ◽  
Mixing Effect

A four-wave mixing effect on high-power continuous-wave fiber lasers has been demonstrated theoretically and experimentally. Detailed theoretical description of phase matching is presented and we found that the phase matching condition is satisfied at the frequency shift of 5.16 THz. While the intensity in fiber core region is more than about 394 MW/cm2, the four-wave mixing products of 1100 nm and 1060 nm were also observed in high-power all-fiber laser. The comparison shows that the experiment result is in good agreement with the simulation result. In addition, the beam quality deterioration for the laser is caused by the four-wave mixing effect and the mode instability. The [Formula: see text] factor measured at maximal intensity of 478 MW/cm2 is 2.80.

Continuous-Wave Diode-Pumped Yb:YAG Laser with High Beam Quality

2006 ◽  
Vol 45 (No. 32) ◽  
pp. L846-L848 ◽  
Author(s):  
Sadao Uemura ◽  
Kenji Torizuka
Keyword(s):  
Continuous Wave ◽  
Beam Quality ◽  
High Beam ◽  
Diode Pumped ◽  
High Beam Quality

scholarly journals A Review of the High-Power All-Solid-State Single-Frequency Continuous-Wave Laser

Micromachines ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1426
Author(s):  
Weina Peng ◽  
Pixian Jin ◽  
Fengqin Li ◽  
Jing Su ◽  
Huadong Lu ◽  
...  
Keyword(s):  
Solid State ◽  
High Power ◽  
Continuous Wave ◽  
Beam Quality ◽  
Optical Loss ◽  
Low Noise ◽  
Stimulated Emission ◽  
Single Frequency ◽  
Laser Resonator ◽  
Laser Guidance

High-power all-solid-state single-frequency continuous-wave (CW) lasers have been applied in basic research such as atomic physics, precision measurement, radar and laser guidance, as well as defense and military fields owing to their intrinsic advantages of high beam quality, low noise, narrow linewidth, and high coherence. With the rapid developments of sciences and technologies, the traditional single-frequency lasers cannot meet the development needs of emerging science and technology such as quantum technology, quantum measurement and quantum optics. After long-term efforts and technical research, a novel theory and technology was proposed and developed for improving the whole performance of high-power all-solid-state single-frequency CW lasers, which was implemented by actively introducing a nonlinear optical loss and controlling the stimulated emission rate (SER) in the laser resonator. As a result, the output power, power and frequency stabilities, tuning range and intensity noise of the single-frequency lasers were effectively enhanced.

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