Surgical laser systems and laser lithotripsy techniques

A system comprising:

• a controller configured to:
• instruct a first laser generator to generate a first laser pulse train having first laser pulses with a first pulse repetition rate;
• receive an output from an analyzer, wherein the analyzer receives a portion of the first laser pulse train reflected from a kidney or bladder stone;
• determine a natural or resonance frequency of the kidney or bladder stone-based on the output from the analyzer;
• and
• match the first pulse repetition rate with the natural or resonance frequency.

A method comprising:

• generating, with a first laser generator, a first laser pulse train having first laser pulses with a first pulse repetition rate;
• receiving, at an analyzer, a portion of the first laser pulse train reflected from a kidney or bladder stone;
• generating, with the analyzer, an output relating to a measured natural or resonance frequency of the kidney or bladder stone;
• receiving, at a controller, the output relating to a natural or resonance frequency of the kidney or bladder stone from the analyzer;
• determining, with the controller, the natural or resonance frequency of the kidney or bladder stone based on the output;
• and
• matching, with the controller, the first pulse repetition rate with the natural or resonance frequency of the kidney or bladder stone.