Integrated dispersion-managed laser achieves low-threshold optical frequency comb
jwt0625 · x · 2026-08-17
Discussion on a paper regarding a fully integrated dispersion-managed femtosecond mode-locked laser (arXiv:2608.09631).
Key Findings:
- Architecture: A self-starting photonic integrated mode-locked laser based on a dispersion-managed architecture.
- Performance: Generates pulses with repetition rates of 0.5–1.2 GHz, pulse durations down to 300 fs, and mode-locking thresholds as low as 27.3 mW.
- Stability: Output forms a passively stable optical frequency comb with comb-line drift <1% of repetition rate, surpassing commercial fiber lasers by two orders of magnitude.
- Integration: Enables complete hybrid integration with a telecom-grade 980-nm III-V pump diode chip.
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