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High beam quality by SBS phase conjugation of a single rod Nd-amplifier up to 140 W average output power

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Abstract

For pumping XUV plasma light sources with solid-state lasers and also for micromaterial processing, high beam quality and output power as well as simplicity of the pump lasers are crucial. The beam quality of high-power solid-state lasers can be significantly improved using phase-conjugating mirrors based on stimulated Brillouin scattering (SBS). Hence, SBS phase conjugation may prove one of the key technologies in this field. We describe a single-rod neodymium amplifier with 140 W average output power and nearly diffraction-limited beam. Because of automatic compensation of the thermal lensing by SBS phase conjugation, the output power can be tuned without changing the beam profile.

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Authors and Affiliations

  1. Optisches Institut, Technische Universität Berlin, Straße des 17. Juni 135, 10623, Berlin, Germany

    H. J. Eichler & A. Haase

  2. Institut für Experimentalphysik, Universität Potsdam, Am Neuen Palais 10, 14469, Potsdam, Germany

    R. Menzel

Authors
  1. H. J. Eichler
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  2. A. Haase
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  3. R. Menzel
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Eichler, H.J., Haase, A. & Menzel, R. High beam quality by SBS phase conjugation of a single rod Nd-amplifier up to 140 W average output power. Opt Quant Electron 28, 261–265 (1996). https://doi.org/10.1007/BF00385857

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  • DOI: https://doi.org/10.1007/BF00385857

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