Injection-locked laser-based beatnote generation phase locked to reference

A system comprising:

• a seed laser configured to generate a seed signal;
• and
• multiple laser stabilization units configured to generate signals having beatnotes of different frequency spacings, each laser stabilization unit comprising:
• a modulator configured to modulate the seed signal or a sideband of the seed signal and generate multiple sideband signals;
• multiple injection-locked lasers configured to generate multiple optical signals based on different ones of the sideband signals;
• a combiner configured to combine the optical signals and generate a combined optical signal;
• and
• a feedback loop configured to modify frequencies of the sideband signals generated by the modulator so that the optical signals generated by the injection-locked lasers have a desired frequency difference.

A method comprising:

• generating a seed signal;
• modulating the seed signal to generate multiple sideband signals;
• generating multiple optical signals based on different ones of the sideband signals using multiple injection-locked lasers;
• combining the optical signals to generate a combined optical signal;
• and
• modifying frequencies of the sideband signals based on the combined optical signal so that the optical signals generated by the injection-locked lasers have a desired frequency difference.