Low-noise 10Ghz mode-locked frequency comb with complete stabilization for precision spectral calibration

We present a compact, low-noise 10 GHz passively mode-locked Er-doped solid-state frequency comb for astrocomb applications. The laser operates at 1560 nm and includes full stabilization schemes of both the repetition rate and the carrier-envelope offset frequency. Two amplification stages provide 180 fs pulses for f–2f CEO detection and 1–2 kW peak power for coherent supercontinuum generation, enabling broad spectral coverage for calibration. Both fREP and fCEO are phase-locked to external RF references, ensuring long-term frequency accuracy and traceability. Measured stability, phase/amplitude noise, timing jitter, and linewidth meet the requirements for astrocomb calibration of high-resolution astronomical spectrographs.