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Stable continuous-wave passive mode-locking of diode-end-pumped Nd:GdVO_(4) and Nd:YAG lasers with semiconductor saturable absorber mirrors (SESAMs) are reported. The comparative study shows that the Nd:GdVO_(4) crystal is efficient to decrease the Q-switched mode-locking tendency, and easier to continuouswave (CW) mode lock than Nd:YAG.