Self-locked microcomb on a single lithium niobate chip tames Raman scattering to achieve broad spectrum and stable low-noise output

https://phys.org/news/2025-09-microcomb-chip-raman-broad-spectrum.html

">300 nm spectral width, >1,400 comb lines at 26.03 GHz repetition rate... multiple sets of electro-optic/ Kerr/ Raman combs generated, further broadened by 4-wave mixing... comb lines originating from Raman laser self-adaptively phase-locked to comb lines from primary pump light, ensuring high coherence without intervention... 550 kHz (8 MHz through thermal tuning) self-locking tuning range... high-resolution spectroscopy/ measurement, optical communications, quantum information processing"