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


Ontology type: schema:Chapter     


Chapter Info

DATE

1998

AUTHORS

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

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. More... »

PAGES

630-635

References to SciGraph publications

  • 1994. Passive Q-Switching of Diode-Pumped Solid-State Lasers with Cr4+:YAG Crystals in LASER IN DER TECHNIK / LASER IN ENGINEERING
  • 1994-12. Diode end-pumped high-efficiency Nd:YAG laser in APPLIED PHYSICS B
  • Book

    TITLE

    Laser in der Medizin Laser in Medicine

    ISBN

    978-3-540-63733-2
    978-3-642-60306-8

    Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/978-3-642-60306-8_129

    DOI

    http://dx.doi.org/10.1007/978-3-642-60306-8_129

    DIMENSIONS

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