Ultra-precise optical-frequency stabilization with heterogeneous III–V/Si lasers

Liron Stern, Wei Zhang, Lin Chang, Joel Guo, Chao Xiang, Minh A. Tran, Duanni Huang, Jonathan D. Peters, David Kinghorn, John E. Bowers, Scott B. Papp*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


The demand for low-noise, continuous-wave, frequency-tunable lasers based on semiconductor integrated photonics has advanced in support of numerous applications. In particular, an important goal is to achieve a narrow spectral linewidth, commensurate with bulk-optic or fiber-optic laser platforms. Here we report on laser-frequency-stabilization experiments with a heterogeneously integrated III/V-Si widely tunable laser and a high-finesse, thermal-noise-limited photonic resonator. This hybrid architecture offers a chip-scale optical-frequency reference with an integrated linewidth of 60 Hz and a fractional frequency stability of 2.5 × 10−13 at 1 s integration time. We explore the potential for stabilization with respect to a resonator with lower thermal noise by characterizing laser-noise contributions such as residual amplitude modulation and photodetection noise. Widely tunable, compact and integrated, cost-effective, stable, and narrow-linewidth lasers are envisioned for use in various fields, including communication, spectroscopy, and metrology.

Original languageAmerican English
Pages (from-to)5275-5278
Number of pages4
JournalOptics Letters
Issue number18
StatePublished - 15 Sep 2020

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© 2020 Optical Society of America


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