Numerical simulation of the Innoslab laser amplifier based on Yb:YAG crystal.

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Title: Numerical simulation of the Innoslab laser amplifier based on Yb:YAG crystal.
Authors: Qiao, Xiang-Yu1 (AUTHOR), Liu, Qi1 (AUTHOR), Xing, Xiao-Wei1 (AUTHOR), Liu, Yang-Tian1 (AUTHOR), Liu, Rui-Qi1 (AUTHOR), Huang, Xi-Wei1 (AUTHOR), Wang, Hao-Yu1 (AUTHOR), Liu, Wen-Jun1 (AUTHOR) jungliu@bupt.edu.cn
Source: Chinese Physics B. 2026, Vol. 35 Issue 5, p1-8. 8p.
Subjects: YAG lasers, Optical amplifiers, Computer simulation, Light propagation, Numerical solutions to differential equations
Abstract: A numerical simulation model is developed for a Yb:YAG Innoslab amplifier. By unfolding the multi-pass folded optical path into a one-dimensional slicing model, the model employs differential iterative calculations. This approach enables high-precision characterization of key physical processes, including spot size evolution, pump-laser saturated absorption distribution, the Yb:YAG reabsorption effect, and the spatial dynamic coupling between the pump and seed beams. Notably, a novel correction mechanism for the small-signal gain coefficient in the overlap regions of adjacent passes is proposed for the first time, specifically addressing the energy re-extraction issue neglected in previous models. This correction significantly enhances the computational accuracy and physical fidelity of the model. Validations against existing experimental data demonstrate high consistency between simulated and measured results, confirming the model's excellent applicability and reliability. This work provides a reliable theoretical basis for the structural optimization and parameter tuning of Innoslab amplifiers. [ABSTRACT FROM AUTHOR]
Copyright of Chinese Physics B is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 193596830
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Numerical simulation of the Innoslab laser amplifier based on Yb:YAG crystal.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Qiao%2C+Xiang-Yu%22">Qiao, Xiang-Yu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Qi%22">Liu, Qi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xing%2C+Xiao-Wei%22">Xing, Xiao-Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Yang-Tian%22">Liu, Yang-Tian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Rui-Qi%22">Liu, Rui-Qi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Xi-Wei%22">Huang, Xi-Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Hao-Yu%22">Wang, Hao-Yu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Wen-Jun%22">Liu, Wen-Jun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jungliu@bupt.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Chinese+Physics+B%22">Chinese Physics B</searchLink>. 2026, Vol. 35 Issue 5, p1-8. 8p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22YAG+lasers%22">YAG lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+amplifiers%22">Optical amplifiers</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Light+propagation%22">Light propagation</searchLink><br /><searchLink fieldCode="DE" term="%22Numerical+solutions+to+differential+equations%22">Numerical solutions to differential equations</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A numerical simulation model is developed for a Yb:YAG Innoslab amplifier. By unfolding the multi-pass folded optical path into a one-dimensional slicing model, the model employs differential iterative calculations. This approach enables high-precision characterization of key physical processes, including spot size evolution, pump-laser saturated absorption distribution, the Yb:YAG reabsorption effect, and the spatial dynamic coupling between the pump and seed beams. Notably, a novel correction mechanism for the small-signal gain coefficient in the overlap regions of adjacent passes is proposed for the first time, specifically addressing the energy re-extraction issue neglected in previous models. This correction significantly enhances the computational accuracy and physical fidelity of the model. Validations against existing experimental data demonstrate high consistency between simulated and measured results, confirming the model's excellent applicability and reliability. This work provides a reliable theoretical basis for the structural optimization and parameter tuning of Innoslab amplifiers. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Chinese Physics B is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1088/1674-1056/ae5175
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      – Code: eng
        Text: English
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        PageCount: 8
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    Subjects:
      – SubjectFull: YAG lasers
        Type: general
      – SubjectFull: Optical amplifiers
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Light propagation
        Type: general
      – SubjectFull: Numerical solutions to differential equations
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      – TitleFull: Numerical simulation of the Innoslab laser amplifier based on Yb:YAG crystal.
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            NameFull: Qiao, Xiang-Yu
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            NameFull: Liu, Qi
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            NameFull: Xing, Xiao-Wei
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            NameFull: Liu, Yang-Tian
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            NameFull: Liu, Rui-Qi
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            NameFull: Huang, Xi-Wei
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            – D: 01
              M: 05
              Text: 2026
              Type: published
              Y: 2026
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            – TitleFull: Chinese Physics B
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