Feng, S., Jin, T., Zhang, T., Lei, S., Zhang, J., Xia, Y., Chang, H., Liu, X., Zhang, R., Pan, Y., Xu, Z., Wang, J., Wang, Y., Tang, Z., Xu, X. (2026). Toward high-efficiency repumping for ultra-stable Yb inner-shell optical lattice clocks. Applied Physics Letters. https://doi.org/10.1063/5.0325272