We demonstrate passive mode locking of a Nd:vanadate (Nd:YVO4) laser to rep
etition rates of up to 13 GHz. With Ti:sapphire pumping, we achieved mode l
ocking at 13 GHz with 310 mW of average output power and pulse widths of 9.
5 ps. With diode pumping, we achieved mode locking at a repetition rate of
12.6 GHz with 198 mW of average output power and a pulse duration of 8.3 ps
.