I worked closely with some of these devices at a previous employer. Might've even fried one at some point. I'm pretty excited about what other things they can be used for!
Worked on atomic clocks, the frequency comb was used to downsample optical frequency ranges to a range that electronics can reasonably handle. A patent for the system can be found here: https://patents.google.com/patent/US20220390902A1/en
Not sure if it was me or someone else. There are a lot of things that can go wrong, but the thing that would've most likely been my fault is running the device without the seed laser on (or turning off the seed laser while operating).
