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Annular-shaped beam for the mitigation of thermal lensing effects in Nd:YAG solid-state lasers

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Abstract

The present work aims to develop a model to mitigate the thermal lensing effects in laser diode-pumped solid-state laser systems. Using an annular-shaped beam, a virtual solid-state laser with a cylindrical form was simulated in double-end pumping geometry. At a pump ratio of (0.6), the results demonstrate that a pump light with an annular shape has an even better distribution for reducing the thermal lensing effect with a slope of 0.09 m−1/W as compared to 0.07 m−1/W slope for the top-hat distribution. Additionally, the annular-shaped pump beam provides the advantage of uniform pumping across the gain medium, which improves the overall efficiency and performance of the laser.

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Authors and Affiliations

  1. Laser and Optoelectronics Engineering Department, University of Technology- Iraq, Baghdad, Iraq

    Zinah Adil Khazal & Mohammed Jalal AbdulRazzaq

  2. Al-Farahidi University, Baghdad, Iraq

    Raed Khalid Ibrahim

Authors
  1. Zinah Adil Khazal
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  2. Raed Khalid Ibrahim
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  3. Mohammed Jalal AbdulRazzaq
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Correspondence to Mohammed Jalal AbdulRazzaq.

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Khazal, Z.A., Ibrahim, R.K. & AbdulRazzaq, M.J. Annular-shaped beam for the mitigation of thermal lensing effects in Nd:YAG solid-state lasers. J Opt (2023). https://doi.org/10.1007/s12596-023-01378-5

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