A novel design of multi-pass pumped Yb:YAG planar waveguide amplifier waveguide amplifier

Bo Qu; Sibo Wang; Zhanda Zhu; Yongling Hui; Hong Lei; Qiang Li

doi:10.1117/12.2634403

12 May 2022 A novel design of multi-pass pumped Yb:YAG planar waveguide amplifier waveguide amplifier

Bo Qu, Sibo Wang, Zhanda Zhu, Yongling Hui, Hong Lei, Qiang Li

Proceedings Volume 12173, International Conference on Optics and Machine Vision (ICOMV 2022); 1217305 (2022) https://doi.org/10.1117/12.2634403
Event: International Conference on Optics and Machine Vision (ICOMV 2022), 2022, Guangzhou, China

Abstract

We present a novel structure of planar waveguide for Yb:YAG laser amplifiers allowing large absorption length. The structure parameters of the planar waveguide were optimized using an 3D amplification model. The performance of the optimized planar waveguide laser amplifier was simulated, and a comparison between the cases with and without considering pump saturation was carried out. The simulated results show that a high pump absorption efficiency and optical-to-optical efficiency can be expected in addition to a good absorption uniformity. The seeder power is scaled from 200W to 7000W, the corresponding pump absorption and optical-to-optical efficiencies are 98.6% and 68%, respectively. The thermal stress of the designed planar waveguide is analyzed theoretically, the results show that the pump power of 10kW is available without the fracture risk.

Citation Download Citation

Bo Qu, Sibo Wang, Zhanda Zhu, Yongling Hui, Hong Lei, and Qiang Li "A novel design of multi-pass pumped Yb:YAG planar waveguide amplifier waveguide amplifier", Proc. SPIE 12173, International Conference on Optics and Machine Vision (ICOMV 2022), 1217305 (12 May 2022); https://doi.org/10.1117/12.2634403

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KEYWORDS

Absorption

Planar waveguides

Waveguides

Optical amplifiers

YAG lasers

3D modeling

Ytterbium

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