A laser diode end-pumped Q-switched Nd:YVO4 laser operating over a 25% to 100% duty cycle range has been built and characterised. A maximum average output power of 24.5 W has been achieved at an optical-to-optical conversion efficiency of 43%, with a beam quality factor M2 of 1.1.
Output power: 1W 2W 3W 5W 7W 10W 15W 20W
Pulse width: 10ns
Frequency(kHz): 10-100
Transverse Mode: TEM00
Beam diameter； 0.8mm
Divergence： 1.5mrad
M2: 1.3
Power stability(8h): 2%
Polarization ratio: >100:1
Operating temp(℃): 10~35
Expected life time: 20000h
