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Amplified spontaneous emission (ASE) effect on gain and stored energy

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Abstract

In this research, amplified spontaneous emission (ASE) is studied along a rod amplifier length where intensities travel in two opposite longitudinal axis directions. The effect of ASE intensity on amplifier stored energy was discussed. An expression was obtained for stored energy in an amplifier in which a nonuniform gain distribution shaped due to ASE saturation effect. Time evolution of population inversion in a pulsed amplifier at the presence of ASE effect was also obtained, using the new relation of stored energy. Numerical calculations were used to verify accuracy and validity of the obtained relations. The numerical calculations included solving rate equation of population inversion of amplifier and simultaneous solving of two intensity equations for two beams traveling in opposite directions along the amplifier length.

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Acknowledgements

We wish to thank Dr. Iradj Manouchehri from Physics Department of Razi University and Mr.Yazdan Mahmoodi from English Language Department of Shahid Beheshti University, for revising the paper. We also wish to thank Khadije Karami for her encouragements and technical advisements.

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There has been no significant financial support for this work that could have influenced its outcome.

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Author notes

  1. Arastoo Mohamadi

    Present address: Kermanshah Province Meteorological Office, Shahid Keshvari Blvd, Kermanshah, 67158-75696, Iran

  2. Arastoo Mohamadi and Hamid Poorantiyosh have contributed equally to this work.

Authors and Affiliations

  1. Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, 19839-69411, Iran

    Arastoo Mohamadi

  2. Geophysics Institute, Tehran University, Tehran, 14359-44411, Iran

    Hamid Poorantiyosh

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  1. Arastoo Mohamadi
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  2. Hamid Poorantiyosh
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All authors contributed to the work equally.

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Correspondence to Arastoo Mohamadi.

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Mohamadi, A., Poorantiyosh, H. Amplified spontaneous emission (ASE) effect on gain and stored energy. J Opt 49, 469–475 (2020). https://doi.org/10.1007/s12596-020-00638-y

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  • DOI: https://doi.org/10.1007/s12596-020-00638-y

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