Sum-frequency generation between an actively synchronized ultrashort Ti:sapphire laser and a Nd:YVO_4 laser

We realized stable synchronization between a femtosecond Ti:sapphire laser and a picosecond Nd:YVO4 laser by using a precise phase-locked loop technology; ultrashort laser pulses at a wavelength around 460 nm were generated by frequency mixing both laser branches. This work demonstrated a feasible way to extend the available ultrashort laser wavelength through nonlinear frequency mixing technology.