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physics.optics2026
Photogalvanic second harmonic generation in Si3N4 for 1 Hz level on-chip metrology and spectroscopy
Andrei Diakonov, Roy Zektzer, Xiyuan Lu +2
The coherent photogalvanic (PG) effect induces an effective nonlinearity in natively silicon nitride integrated photonics, unlocking pathways toward chip-scale…
physics.optics2026
Sub-Hz Stability and Correlation in Pair-Generated Primary Kerr Comb Tones
Konstantin Khrizman, Andrei Diakonov, Liron Stern
Kerr microcombs provide a compact route to broadband optical frequency grids, yet the primary comb states formed at the onset of Kerr-comb generation have received little attention…