We report on the experimental measurement of the saturated gain of Yb<sup>3+</sup>:Sr<sub>5</sub>(PO<sub>4</sub>)<sub>3</sub>F at the 1047-nm laser line as a function of pump fluence and probe energy. The emission line was accurately modeled as a single homogeneous extraction, yielding values of 6.2 × 10<sup>–20</sup> cm<sup>2</sup> for the emission cross section and 3.3 J/cm<sup>2</sup> for the saturation fluence.
© 2000 Optical Society of America
Andy J. Bayramian, Camille Bibeau, Kathleen I. Schaffers, Christopher D. Marshall, and Steve A. Payne, "Gain saturation measurements of ytterbium-doped Sr5(PO4)3 F," Appl. Opt. 39, 982-985 (2000)