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Analytical and experimental studies on the diode-pumped, simultaneously Q-switched and mode-locked c-cut Nd:GdVO 4/KTP green laser with LT-GaAs absorber

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Abstract.

A diode-pumped passively Q-switched mode-locked (QML) intracavity frequency doubled c-cut Nd:GdVO4/KTP green laser with a LT-GaAs saturable absorber is presented. More than 90% modulation depth for the mode-locked green pulses has been achieved. Using the hyperbolic secant function methods, a developed rate equation model for Q-switched and mode-locked lasers considering the Gaussian spatial distribution of the intracavity photon intensity, the influences of continuous pump rate, the upper state lifetime of the active medium, and the excited-state lifetime of the saturable absorber, was proposed. With this developed model, the theoretical results are in good agreement with the experimental results and the width of the mode-locked green pulse was estimated to be about 380 ps.

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Authors and Affiliations

  1. School of Information Science and Engineering, Shandong University, Jinan, 250100, P.R. China

    M. Li, S. Zhao, G. Q. Li, K. Yang, D. Li, J. Wang & J. An

Authors
  1. M. Li
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  2. S. Zhao
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  3. G. Q. Li
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  4. K. Yang
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  5. D. Li
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  6. J. Wang
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  7. J. An
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Correspondence to M. Li.

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Li, M., Zhao, S., Li, G. et al. Analytical and experimental studies on the diode-pumped, simultaneously Q-switched and mode-locked c-cut Nd:GdVO 4/KTP green laser with LT-GaAs absorber. Eur. Phys. J. D 44, 181–186 (2007). https://doi.org/10.1140/epjd/e2007-00138-1

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  • DOI: https://doi.org/10.1140/epjd/e2007-00138-1

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