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

Zhang, Wei-qiao; Liu, Yang; Chen, Nianjiang; Ding, Xiaokang; Tang, Xinde; Xie, Gui-juan

doi:10.1007/s11801-020-9049-6

Cited by 3 publications

(4 citation statements)

References 10 publications

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“…Furthermore, a 6.1 kW laser output using surface-gain medium has already been realized in 2020. 22 The achievement of a surface-gain structure in terms of kW level laser output has indicated that such a structure has great potential in high-power solid-state lasers. However, adequate reports on the use of a ceramic gain medium with this structure have been lacking until today.…”

Section: Introductionmentioning

confidence: 99%

“…With a fiber laser as the seed source, the output power achieved by single‐ and double‐pass amplification was 1.6 and 2.6 kW, respectively, and the corresponding optical‐to‐optical conversion efficiency was 12.8% and 21.4%, respectively. Furthermore, a 6.1 kW laser output using surface‐gain medium has already been realized in 2020 22 . The achievement of a surface‐gain structure in terms of kW level laser output has indicated that such a structure has great potential in high‐power solid‐state lasers.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication and properties of novel composite laser ceramics with a surface‐gain structure

et al. 2023

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To suppress heat effects in a high-power laser system, it has been proposed to use a few composite laser gain media to improve the heat management ability. The surface-gain structure has the advantages of both slab and thin-disk configurations, which has huge potential in high-power laser. For the first time, novel composite laser ceramics with surface-gain structure have been fabricated by tape casting and sintering technology. The in-line transmittances of surfacegain ceramics in 1100 and 400 nm are 83.5% and 79.1%, respectively. According to the laser ablation-coupled plasma mass spectrometry, the diffusion distance of Yb 3+ is about 150 µm. The laser experiment yields a low repetition rate pulse of 1.9 J with a pump absorption energy of 11 J and an optical-to-optical conversion efficiency of 17.2%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication and properties of novel composite laser ceramics with a surface‐gain structure

et al. 2023

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“…Among them, the design of appropriate composite structure laser gain medium can improve the thermal management capability of laser gain medium, so as to improve the power, efficiency, and beam quality of laser without increasing the volume and complexity of the laser. Therefore, research on gain media with composite structure has developed rapidly in recent years 9,10 …”

Section: Introductionmentioning

confidence: 99%

“…Therefore, research on gain media with composite structure has developed rapidly in recent years. 9,10 When end-pumped, it is difficult for uniform gain media to fully absorb the pump light, because the absorption efficiency decreases from both ends to the center, and the center toward the length direction of the gain medium fails to achieve sufficient pump, which will limit the total energy storage. 11 With the gradient doping structure, the laser gain medium can be fully pumped, improving the energy storage density and total energy storage in its central area.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and properties of multistage gradient doping Yb:YAG laser ceramics

et al. 2022

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In order to fully pump and smoothen the temperature gradient of the gain medium, multistage gradient doping Yb:YAG laser ceramics were designed. The composite green bodies were fabricated by tape casting, and multistage gradient doping Yb:YAG ceramics with high optical quality were prepared by vacuum sintering and hot isostatic pressing. For samples pre‐sintered at 1740°C for 30 h and then HIP‐ed at 1700°C for 3 h in argon at 200 MPa, the in‐line transmission values at 1100 nm of YAG, 0.6 at.%Yb:YAG, and 1.5 at.%Yb:YAG ceramics were found to be 83.9%, 84.1%, and 83.3%, respectively. Finally, the 940 nm laser diode was used as the pump source to realize the 1030 nm laser output of multistage gradient doping Yb:YAG ceramic slab with a total energy of 3.43 J. The corresponding optical‐to‐optical conversion and slope efficiencies were 30% and 45%.

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Progress and perspectives on composite laser ceramics: A review

Tian

Ikesue²,

2022

Journal of the European Ceramic Society

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

Cited by 3 publications

References 10 publications

Fabrication and properties of novel composite laser ceramics with a surface‐gain structure

Fabrication and properties of novel composite laser ceramics with a surface‐gain structure

Fabrication and properties of multistage gradient doping Yb:YAG laser ceramics

Progress and perspectives on composite laser ceramics: A review

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