New compact chips can convert light into microwaves

https://techxplore.com/news/2024-03-compact-chips-microwaves.html

"high-precision timing to within 15 fs... reducing timing jitter lowers power usage... integrate all parts (lasers, modulators, detectors, optical amplifiers) onto single chip... direct semiconductor laser into tiny mirror box, some light frequencies fit perfectly between walls, stabilizing and converting high-frequency light into lower-pitched microwave using frequency comb... GPS, internet and cell network signal synchronization, radar, low-noise signals and clock synchronization for astronomers, environmental scientists"