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arXiv · 2405.04594

Hybrid AM/FM Mode-Locking of Singly-Resonant OPOs

Ryan Hamerly·Evan Laksono·Marc Jankowski·Edwin Ng·Noah Flemens·Myoung-Gyun Suh·Hideo Mabuchi
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Abstract

We investigate a new mode-locking regime in the singly-resonant OPO employing simultaneous amplitude- and frequency-modulation of the intracavity field. This OPO exhibits deterministic, "turn-key" formation of a stable, broadband, chirped frequency comb with high conversion efficiency. Comb-forming dynamics follow a simple phase-space dynamical model, governed by cavity dispersion and modulator chirp, which agrees closely with full numerical simulations. The comb exhibits fast, mode-hop-free tuning over the full gain window of the OPA crystal, controlled by the modulator frequency. Conditions for comb stability, and techniques to enhance comb bandwidth through intentional phase-mismatch and chirping, are investigated.

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Ryan Hamerly, Evan Laksono, Marc Jankowski, Edwin Ng, Noah Flemens, Myoung-Gyun Suh, Hideo Mabuchi. 2024-05-07. Hybrid AM/FM Mode-Locking of Singly-Resonant OPOs. https://arxiv.org/abs/2405.04594

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