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(W): 2W 4W 7W 10W 15W 20W 25W 30W
Transverse Mode: TEM00
Pulse width @20kHz: 6ns 8ns 8ns 10ns 10ns 14ns 14ns 16ns
Beam diameter 0.6mm 0.8mm
Divergence (mrad): 3mrad 1.5mrad
Beam Roundness: >90%
M2: 1.2
Power stability(8h): 1%
Pointing stability: <30μrad
Frequency(kHz): 10~100
Polarization ratio: >100:1
