Dynamic repetition-rate control of single-cavity dual-comb lasers

A method for dynamic repetition-rate control of a single-cavity dual-comb laser, comprising:

• controlling the single-cavity dual-comb laser such that a repetition-rate difference between first and second pulse trains generated by the single-cavity dual-comb laser has a positive value;
• recording an interferogram with the first and second pulse trains while the repetition-rate difference has the positive value;
• and
• controlling, after said recording, the single-cavity dual-comb laser such that the repetition-rate difference between the first and second pulse trains has a negative value;
• wherein:
• the first and second pulse trains accrue a first temporal offset while the repetition-rate difference has the positive value;
• the first and second pulse trains accrue a second temporal offset while the repetition-rate difference has the negative value;
• and
• the first temporal offset and the second temporal offset have the same magnitude and opposite signs.