Applied Physics B

, Volume 58, Issue 5, pp 397–402 | Cite as

Temperature dependence of efficiency and thermal lensing of diode-laser-pumped Nd:YAG lasers

  • U. Brauch
Advanced Optically Pumped Solid-State Lasers


Efficiencies, lasing thresholds and thermal lensing of a Nd:YAG rod side-pumped with two 10 W diode-laser-arrays are measured for various rod temperatures between 80 K and 380 K. The threshold is reduced by a factor of 2.5–4 on cooling from room temperature to about 100 K, while the slope efficiency is increased by between 0% and 50% depending on the reflectivity of the outcoupling mirror. Extrapolation to a 240 W pumped laser gives an increase in optical efficiency of 25% to 30%. The thermal lensing measured with a beam deflection and an interferometric method is reduced by a factor of 10.




Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    U. Brauch, J. Muckenschnabel, G.A. Thompson, H. Bernstein, A. Yogev, A. Reich, M. Oron: Opt. Eng.31, 1072 (1992)Google Scholar
  2. 2.
    A.P. Veduta, A.M. Leontovich, V.N. Smorchkov: Sov. Phys.-JETP21, 59 (1965)Google Scholar
  3. 3.
    T. Kushida: Phys. Rev.185, 500 (1969)Google Scholar
  4. 4.
    M. Birnbaum, C.F. Klein: J. Appl. Phys.44, 2928 (1973)Google Scholar
  5. 5.
    W. Koechner:Solid-State Laser Engineering, 3rd edn., Springer Ser. Opt. Sci., Vol. 1 (Springer, Berlin, Heidelberg 1992) p. 51Google Scholar
  6. 6.
    A.V. Mezenov, L.N. Soms, A.I. Stepanov: J. Sov. Laser Res.8, 427 (1987)Google Scholar
  7. 7.
    J.M. Eggleston, T.J. Kane, K. Kuhn, J. Unternahrer, R.L. Byer: IEEE J. QE-20, 289 (1984); [5], p. 423, with Eq. (7.62) replaced byf x,y = [(NS 1,2) 2L]−1 Google Scholar
  8. 8.
    P. Lacovara, H.K. Choi, C.A. Wang, R.L. Aggarwal, T.Y. Fan: Opt. Lett.16, 1089 (1991)Google Scholar
  9. 9.
    A. Giesen, H. Hügel, A. Voß, K. Wittig, H. Opower, U. Brauch: Appl. Phys. B (in press)Google Scholar

Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • U. Brauch
    • 1
  1. 1.Deutsche Forschungsanstalt für Luft- und Raumfahrt e. V.Institut für Technische PhysikStuttgartGermany

Personalised recommendations