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Performance of Nd:YAG Laser End Pumped by 10 W Fiber Coupled Diode Bar

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Laser in der Medizin Laser in Medicine

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Abstract

Several , very efficient neodymium diode pumped lasers of 5–10 W output powers with slope efficiency exceeding 50% were demonstrated in last years [1–3]. Despite excellent overlap of pump diode and absorption spectra of active media the main problems in development of such lasers in several Watts range of power are connected with heat removing. The main effect consists in thermal lensing proportional to absorbed pump power and effective pump diameter. However, for higher pump density multimode beam with strong outer rings is generated resulting in degradation of beam quality. J. Frauchiger et al. showed [4] that higher mode oscillation occurs in near confocal cavities for high pump level. S. C. Tidwell et al. [5] showed that even for high thermal load it is possible to compensate thermal distortions by aspherical mirror. T. M. Byer and M. Keierstead [6] analyzed similar effects in Nd:YV04 and Nd:YLF lasers and showed that it is possible to compensate it despite high wavelength aberration. Both laser mode waist diameter and pump diameter influence strongly on threshold and efficiency of laser, thus the compromise between efficiency and beam quality requirements should be found.

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Authors and Affiliations

  1. Institute of Optoelectronics, Military University of Technology, 01 489, Warsaw, ul Kaliskiego 2, Poland

    J. K. Jabczyñski, W. Zendzian, K. Kopczyñski & Z. Mierczyk

Authors
  1. J. K. Jabczyñski
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  2. W. Zendzian
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  3. K. Kopczyñski
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  4. Z. Mierczyk
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Editor information

Editors and Affiliations

  1. Ludwig-Maximilians-Universität München, Germany

    Wilhelm Waidelich (em. Universitätsprofessor) (em. Universitätsprofessor)

  2. Urologische Klinik, Klinikum Großhadern, Ludwig-Maximilians-Universität München, Germany

    Raphaela Waidelich

  3. Klinikum Benjamin Franklin, Freie Universität Berlin, Germany

    Jürgen Waldschmidt (Universitätsprofessor, Leiter der Abteilung für Kinderchirurgie) (Universitätsprofessor, Leiter der Abteilung für Kinderchirurgie)

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© 1998 Springer-Verlag, Berlin Heidelberg

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Jabczyñski, J.K., Zendzian, W., Kopczyñski, K., Mierczyk, Z. (1998). Performance of Nd:YAG Laser End Pumped by 10 W Fiber Coupled Diode Bar. In: Waidelich, W., Waidelich, R., Waldschmidt, J. (eds) Laser in der Medizin Laser in Medicine. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-60306-8_129

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  • DOI: https://doi.org/10.1007/978-3-642-60306-8_129

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-63733-2

  • Online ISBN: 978-3-642-60306-8

  • eBook Packages: Springer Book Archive

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