Abstract: We report for the first time on simultaneously longitudinal and transverse self-mode locking in
a diode-pumped Nd:YVO4 laser to achieve a pulse train traveling along the zigzag multi-pass
trajectories in the degenerate cavity. At a pump power of 2.5 W, the average output powers in
the mode-locked operation are 490 mW and 520 mW for the M-mode and Z-mode,
respectively. The pulse widths are measured to be approximately 22.2 and 21.1 ps for the
M-mode and Z-mode, respectively.