Intra-Stark Relaxation of Nd(sup 3+) in Silicate Glass: Subpicosecond Accumulated Photon Echo Experiments.

摘要

We have directly measured in the time domain the rates of phonon-induced population relaxation within the (sup 4)G(sub 5/2), (sup 2)G(sub 7/2) Stark manifold of Nd(sup 3+) in a silicate glass. At 13 K, these processes occur in the picosecond to subpicosecond time regime. The populations relaxation time increases with excitation frequency within each inhomogeneously broadened Stark component. Finally, the location of the Stark components within the entire inhomogeneous profile can be inferred from the data. 13 refs., 1 fig.