Integrated Frequency-Agile 780 nm PZT Silicon Nitride Ring Modulator and Application to Sub-Doppler Atom Cooling. - Andrei Isichenko; Nick Montifiore; Jiawei Wang; Nitesh Chauhan; Mark W. Harrington; Iain M. Kierzewski; Ryan Q. Rudy; Daniel J. Blumenthal (OFC, 2025)