Passively mode-locked YVO4/Nd:YVO4 composite crystal green laser with a semiconductor saturable absorber mirror

A diode-pumped passively mode-locked YVO4/Nd YVO4 composite crystal green laser with a semiconductor saturable absorber mirror (SESAM) and a intracavity frequency-doubling KTP crystal was realized. The maximum average output power of 2.06 W at 532 nm with a repetition rate of 100 MHz was obtained at a pump power of 15 W, corresponding to optical slop efficiency 17.2%. The 532 nm mode-locked pulse width was estimated to be approximately 18-ps.

National Science Foundation of China 60578010 60678015Natural Science Foundation of Shandong Province Y2005GI2 This work was partially supported by the National Science Foundation of China (60578010 and 60678015.) and the Natural Science Foundation of Shandong Province (Y2005GI2).