Integrated Visible Light Coil-Resonator Stabilized Brillouin Lasers for SR Neutral and Trapped-Ion Clock and Qubit Transitions

We demonstrate stabilization of 698 and 674 nm integrated Brillouin lasers to integrated 3-m coil resonators for neutral and trapped-ion strontium clock applications, achieving record-low 17 Hz fundamental and 660 Hz integral linewidths.