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Thermal lens analysis in a diode-pumped 10 Hz 100 mJ Yb:YAG amplifier

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Abstract

We address the power scaling issue in end-pumped laser rod amplifiers by studying, experimentally and numerically, the magnitude of thermal lensing in a high-energy diode-pumped Yb:YAG crystal. The spatio-temporal temperature profile of the gain medium and the focal length of the induced thermal lens are determined numerically. The influence of the repetition rate and pumping power on the temperature distribution is analyzed. Experimental measurements covered repetition rates between 1 and 10 Hz and up to 4 kW pumping power.

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DOI:10.1017/hpl.2020.11

所属栏目:Research Articles

基金项目:This work is partially supported by the Funda??o para a Ciência e a Tecnologia (grant agreement No. PD/BD/135222/2017) and has been carried out within the framework of Laserlab-Portugal (National Roadmap of Research Infrastructures, 22124) and the European Union Horizon 2020 research and innovation program under grant agreement No. 654148 Laserlab-Europe. The views and opinions expressed herein do not necessarily reflect those of the European Commission.

收稿日期:2019-10-15

录用日期:2020-03-06

网络出版日期:2020-04-21

作者单位    点击查看

Victor Hariton:GoLP/Instituto de Plasmas e Fus?o Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais,1049-001Lisbon, Portugal
Celso Paiva Jo?o:GoLP/Instituto de Plasmas e Fus?o Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais,1049-001Lisbon, Portugal
Hugo Pires:GoLP/Instituto de Plasmas e Fus?o Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais,1049-001Lisbon, Portugal
Mario Galletti:GoLP/Instituto de Plasmas e Fus?o Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais,1049-001Lisbon, Portugal;Central Laser Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, DidcotOX11 0QX, UK
Gon?alo Figueira:GoLP/Instituto de Plasmas e Fus?o Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais,1049-001Lisbon, Portugal

联系人作者:Victor Hariton(victor.hariton@tecnico.ulisboa.pt)

备注:This work is partially supported by the Funda??o para a Ciência e a Tecnologia (grant agreement No. PD/BD/135222/2017) and has been carried out within the framework of Laserlab-Portugal (National Roadmap of Research Infrastructures, 22124) and the European Union Horizon 2020 research and innovation program under grant agreement No. 654148 Laserlab-Europe. The views and opinions expressed herein do not necessarily reflect those of the European Commission.

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引用该论文

Victor Hariton, Celso Paiva Jo?o, Hugo Pires, Mario Galletti, and Gon?alo Figueira, "Thermal lens analysis in a diode-pumped 10 Hz 100 mJ Yb:YAG amplifier," High Power Laser Science and Engineering 8(2), e13 (2020)

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