Diode-pumped doubly Q-switched Nd:Lu 0.33Y 0.37Gd 0.3VO 4 laser with an electro-optic modulator and a single-walled carbon nanotube saturable absorber

By simultaneously using an electro-optic (EO) modulator and a single-walled carbon nanotube saturable absorber (SWCNT-SA) in the cavity, a diode-pumped doubly Q-switched Nd:Lu0.33Y0.37Gd0.3VO4 (Nd:LuYGdVO4) laser is demonstrated. At the incident pump power 11.43W and f=2kHz, the minimum pulse width 17.6ns and the maximum pulse peak power 19,886W can be obtained. The experimental results show that this doubly Q-switched Nd:LuYGdVO4 laser can generate shorter pulse width and higher peak power compared to the singly Q-switched Nd:LuYGdVO4 laser with only EO or SWCNT-SA.