The present invention relates to a surgical laser system comprising:a first laser generator configured to generate a first laser pulse train having first laser pulses with a first pulse repetition rate；a stone analyzer configured to receive a portion of the first laser pulse train reflected from a kidney or bladder stone, and generate an output relating to a natural or resonance frequency of the kidney or bladder stone； anda controller comprising at least one processor configured to determine the natural or resonance frequency of the kidney or bladder stone based on the output from the stone analyzer, and match the first pulse repetition rate with the natural or resonance frequency.
