LASER-DIODE END-PUMPED DOUBLY PASSIVELY Q-SWITCHED INTRACAVITY-FREQUENCY-DOUBLING Nd:YVO4/KTP GREEN LASER WITH Cr4+:YAG AND GaAs SATURABLE ABSORBERS

Doubly passively Q-switched Nd : YVO 4/ KTP green lasers with Cr 4+: YAG and GaAs saturable absorbers have been realized. Different small-signal transmissions T0 of Cr 4+: YAG are used and when T0 = 0.71, the highest average output power can be generated by the doubly passively Q-switched green laser. The experimental results reveal that the output characteristics of doubly passively Q-switched green lasers depend on the small-signal transmissions of two saturable absorbers. The suitable small-signal transmissions of two saturable absorbers should be reasonably chosen to meet the needs of applications.