Diode-pumped Yb:Sr{sub 5}(PO{sub 4}){sub 3}F laser performance

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The performance of the first diode-pumped Yb{sup 3+}-doped Sr{sub 5}(PO{sub 4}){sub 3}F (Yb:S-FAP) laser is discussed. We found the pumping dynamics and extraction cross-sections of Yb:S-FAP crystals to be similar to those previously inferred by purely spectroscopic techniques. The saturation fluence for pumping was measured to be 2.2 J/cm{sup 2} using three different methods based on either the spatial, temporal, or energy transmission properties of a Yb:S-FAP rod. The small signal gain implies an emission cross section of 6.0 x 10{sup -20} cm{sup 2} that falls within error bars of the previously reported value of 7.3 x 10{sup -20} cm{sup ... continued below

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5 p.

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Marshall, C.D.; Payne, S.A. & Smith, L.K. March 17, 1995.

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The performance of the first diode-pumped Yb{sup 3+}-doped Sr{sub 5}(PO{sub 4}){sub 3}F (Yb:S-FAP) laser is discussed. We found the pumping dynamics and extraction cross-sections of Yb:S-FAP crystals to be similar to those previously inferred by purely spectroscopic techniques. The saturation fluence for pumping was measured to be 2.2 J/cm{sup 2} using three different methods based on either the spatial, temporal, or energy transmission properties of a Yb:S-FAP rod. The small signal gain implies an emission cross section of 6.0 x 10{sup -20} cm{sup 2} that falls within error bars of the previously reported value of 7.3 x 10{sup -20} cm{sup 2}, obtained from spectroscopic techniques. Up to 1.7 J/cm{sup 3} of stored energy density was achieved in a 6 x 6 x 44 mm Yb:S-FAP amplifier rod. An InGaAs diode array has been fabricated that has suitable specifications for pumping a 3 x 3 x 30 mm Yb:S-FAP rod. In a free running configuration diode-pumped slope efficiencies up to 43% were observed with output energies up to {approximately}0.5 J per 1 ms pulse. When the rod was mounted in a copper block for cooling, 13 W of average power was produced with power supply limited operation at 70 Hz and 500 {mu}s pulses.

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5 p.

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INIS; OSTI as DE96000096

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  • Advanced solid-state laser conference, Memphis, TN (United States), 29 Jan - 1 Feb 1995

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  • Other: DE96000096
  • Report No.: UCRL-JC--118194
  • Report No.: CONF-950101--9
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 110729
  • Archival Resource Key: ark:/67531/metadc622706

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  • March 17, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 23, 2016, 4:08 p.m.

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Marshall, C.D.; Payne, S.A. & Smith, L.K. Diode-pumped Yb:Sr{sub 5}(PO{sub 4}){sub 3}F laser performance, article, March 17, 1995; California. (digital.library.unt.edu/ark:/67531/metadc622706/: accessed December 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.