Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published May 11, 2023 | In Press
Journal Article Open

Self‐Injection Locked Frequency Conversion Laser


High-coherence visible and near-visible laser sources are centrally important to the operation of advanced position/navigation/timing systems as well as classical/quantum sensing systems. However, the complexity and size of these bench-top lasers are an impediment to their transition beyond the laboratory. Here, a system-on-chip that emits high-coherence near-visible lightwaves is demonstrated. The devices rely upon a new approach wherein wavelength conversion and coherence increase by self-injection locking are combined within a single nonlinear resonator. This simplified approach is demonstrated in a hybridly-integrated device and provides a short-term linewidth of around 4.7 kHz (10 kHz before filtering). On-chip converted optical power over 2 mW is also obtained. Moreover, measurements show that heterogeneous integration can result in a conversion efficiency higher than 25% with an output power over 11 mW. Because the approach uses mature III–V pump lasers in combination with thin-film lithium niobate, it can be scaled for low-cost manufacturing of high-coherence visible emitters. Also, the coherence generation process can be transferred to other frequency conversion processes, including optical parametric oscillation, sum/difference frequency generation, and third-harmonic generation.

Additional Information

© 2023 The Authors. Laser & Photonics Reviews published by Wiley-VCH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. This work was performed in part at the Cornell NanoScale Facility, a member of the National Nanotechnology Coordinated Infrastructure (National Science Foundation, ECCS-1542081), and at the Cornell Center for Materials Research (National Science Foundation, Grant No. DMR-1719875). This work was supported in part by the Defense Advanced Research Projects Agency (DARPA) LUMOS program under Agreement No. HR001-20-2-0044, the Defense Threat Reduction Agency-Joint Science and Technology Office for Chemical and Biological Defense (grant no. HDTRA11810047), and the National Science Foundation (NSF) (ECCS-1810169, ECCS-1842691, ECCS-1542081, DMR-1719875, and OMA-2138174). Author Contributions. J.L., J.S., H.W., B.S., and L.C. contributed equally to this work. J.L., J.S., B.Q., H.W., L.C., J.B., K.V., and Q.L. conceived the experiment. J.L. and J.S designed and fabricated the PPLN device, and L.C. designed and fabricated the DFB laser. J.L., J.S., B.Q., and H.W. carried out the device characterization. U.J., L.W., and M.L. assisted in the device fabrication. U.J., R.L., Y.H., and Z.Y. assisted in experiments. J.L., J.S., B.Q., H.W., L.C., and Q.L. wrote the manuscript with contribution from all authors. Q.L., K.V., and J.B. supervised the project. The authors declare no conflict of interest.

Attached Files

In Press - Laser___Photonics_Reviews_-_2023_-_Ling_-_Self‐Injection_Locked_Frequency_Conversion_Laser.pdf



Additional details

August 22, 2023
October 25, 2023