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physics.optics2026
Laser with stability
Ben Lewis, Zoey Z. Hu, Dahyeon Lee +8
We report a laser with record frequency stability, based on a 21 cm cryogenic silicon cavity. For best short-term stability, the cavity operates at 6 K to minimize Brownian thermal…
physics.atom-ph2026
Phase-continuous comparison of three all-optical time scales over 20 days
Dahyeon Lee, Kyungtae Kim, Zoey Z. Hu +11
Optical frequency standards have progressed rapidly over the past two decades, leading to the anticipated redefinition of the SI second by an optical frequency. However, time scale…