Photoacoustic determination of the luminescent quantum efficiency of yb(3+) ions in lithium niobate.
The luminescent quantum efficiency of Yb(3+) ions in lithium niobate (LiNbO(3)) is obtained by use of a method based on the simultaneous and multiwavelength measurement of photoacoustic and luminescent signals after modulated continuous laser excitation. The experimental results give a high value for the luminescence quantum efficiency (? = 0.90 ? 0.05), coincident with the predictions by the comparison between experimental and estimated radiative lifetimes.
Muñoz
J A
JA
Tocho
J O
JO
Cussó
F
F