A measurement technique is described in which the radiative quantum efficiency of certain transitions in rare-earth–doped glasses can be determined based only on relative fluorescence measurements. We calibrate the emission from the level of interest by measuring emission into that level from a higher excited level. Application of the technique to Pr3+-doped sulfide glasses yields quantum efficiencies for the 1G4 → 3H5 transition as high as 60%, in good agreement with measurements using the integrating sphere technique. Calculated efficiency values based on the Judd–Ofelt technique are shown to be subject to inherent uncertainties.
© 1995 Optical Society of America
Original Manuscript: May 16, 1995
Published: October 1, 1995
R. S. Quimby, B. G. Aitken, M. A. Newhouse, and K. T. Gahagan, "Self-calibrating quantum efficiency measurement technique and application to Pr3+-doped sulfide glass," Opt. Lett. 20, 2021-2023 (1995)