A design of a surface-doped Yb:YAG slab laser with high power and high efficiency

Liu, Jiao; Liu, Yang; Tang, Xinde; Wang, Chao; Liu, Lei; Chen, Lu; Li, Ning; Wang, Ke; Liang, Xingbo; Lü, Kunpeng; Yang, Xue; Zhao, Hong; Chen, Nianjiang

doi:10.3788/col201816.101401

Cited by 4 publications

(1 citation statement)

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“…Lasers with high average power and beam quality are promising sources for materials processing, scientific research, and military defense [1][2][3][4] . The conduction-cooled end-pumped slab (CCEPS) configurations have the potential to provide high average power and high beam quality because the zigzag propagation in CCEPS eliminates the thermo-optical path difference (OPD) over the entire beam area [5][6][7][8][9] . Northrop Grumman Corporation, using Nd:YAG CCEPS, first realized more than 100 kW output power in 2009 [10,11] .…”

Section: Introductionmentioning

confidence: 99%

22 kW near-diffraction-limited Yb:YAG slab laser amplifier without adaptive optics correction

Wang,

He,

Zhou

et al. 2024

中国光学快报

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A high-power CW Yb:YAG slab laser amplifier with no adaptive optics correction has been experimentally established. At room temperature, the amplifier emits a power of 22 kW with an average beam quality (β) of less than 3 in 0.5 min. To our knowledge, this is the brightest slab laser without closed-loop adaptive optics demonstrated to date. In addition, an extracted power of 17 kW with an optical extraction efficiency of 33%, corresponding to a residual optical path difference of less than 0.5 μm, is achieved with the single Yb:YAG slab gain module. The slab gain module has the potential to be scalable to higher powers while maintaining good beam quality. This makes a high-power solid-state laser system simpler and more robust.

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Section: Introductionmentioning

confidence: 99%

22 kW near-diffraction-limited Yb:YAG slab laser amplifier without adaptive optics correction

Wang,

He,

Zhou

et al. 2024

中国光学快报

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6.1 kW CW laser amplifier chain based on Yb:YAG surface-doped slab

Zhang

Liu

Chen

et al. 2020

Optoelectron. Lett.

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Improving the Laser Performance of Yb³⁺-Doped Phosphate Fiber: Population Simulation of the Yb³⁺ Level

Yan

Tao

et al. 2021

IEEE Photonics J.

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Based on the Boltzmann distribution and multi-phonon relaxation probability criterion, an original Yb 3+ population equation was proposed to describe the population distribution before and after laser generation, and the population distribution of Yb 3+ under different pump ratios and temperatures was investigated by numerical simulation. The simulation results indicated that the laser wavelength of Yb 3+ -doped modified phosphate fibers have a high probability of being in the range of 1019 nm -1056 nm under the conventional pump ratio. Additionally, fibers lasing at a longer wavelength may have a lower laser threshold. For ultra-high pump ratio or high fiber temperature, the laser operation state changes from a quasi-four-level to a quasi-three-level scheme, and the laser wavelength may blue-shift. Experimental results verify the above simulation results, and in addition demonstrate an output power of 9.38 W with a slop efficiency of 27.4% in an Yb 3+ -doped phosphate modified fiber with a length of 35.4 cm and diameter of 280 μm from an optical path with a refrigeration patch and suppressing short-wave laser output. The results show that the laser performance of Yb 3+ -doped fibers can be improved by reducing the operating temperature and inhibiting short-wave laser output.

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A design of a surface-doped Yb:YAG slab laser with high power and high efficiency

Cited by 4 publications

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22 kW near-diffraction-limited Yb:YAG slab laser amplifier without adaptive optics correction

22 kW near-diffraction-limited Yb:YAG slab laser amplifier without adaptive optics correction

6.1 kW CW laser amplifier chain based on Yb:YAG surface-doped slab

Improving the Laser Performance of Yb³⁺-Doped Phosphate Fiber: Population Simulation of the Yb³⁺ Level

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A design of a surface-doped Yb:YAG slab laser with high power and high efficiency

Cited by 4 publications

References 0 publications

22 kW near-diffraction-limited Yb:YAG slab laser amplifier without adaptive optics correction

22 kW near-diffraction-limited Yb:YAG slab laser amplifier without adaptive optics correction

6.1 kW CW laser amplifier chain based on Yb:YAG surface-doped slab

Improving the Laser Performance of Yb3+-Doped Phosphate Fiber: Population Simulation of the Yb3+ Level

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Improving the Laser Performance of Yb³⁺-Doped Phosphate Fiber: Population Simulation of the Yb³⁺ Level