Stimulated‐emission cross section at 1064 and 1342 nm in Nd : YVO4

摘要

The stimulated‐emission cross sections at 1064 (4F3/2→4I11/2) and 1342 nm (4F3/2→4I13/2) in Nb : YVO4were determined by measurement of laser thresholds as a function of output mirror reflectivity. Small samples of Nd : YVO4and Nd : YAG were end pumped at room temperature with a cw 514.5‐nm argon ion laser in an almost identical geometrical arrangement which permitted comparative values to be obtained. Assuming that the pumping quantum efficiency of Nd : YVO is similar to that of Nd : YAG, the stimulated‐emission cross sections obtained for the 1064‐ and 1342‐nm transitions were respectively 12×10−19and 6.0×10−19cm2.