Measurement of the subnanosecond, nonradiative relaxation time from excited states of Nd(3+) in a Nd:YAG crystal.
We have time resolved the nonradiative relaxation from the (4)G(7/2) manifold to the upper laser level (for lambda = 1.06 microm) of Nd(3+) in a Nd:YAG crystal. This has been performed by monitoring the onset of gain for the associated (4)F(3/2)-(4)I(11/2) transitionfollowing excitation of the (4)G(7/2) pump band by a 40-psec, 0.53-micro m pump pulse. The nonradiative relaxation time was found to be 470 +/- 60 psec at room temperature and no shorter than 400 psec at 440 K.
Cruz
J
J
Giuliani
G
G
van Driel
H M
HM