Xie, J., Zhang, K., Liu, Y., Zhang, Z., Jiang, Q., Hu, Z., Lv, Y., Wang, J., Wan, H. (2026). Label-free, ultra-sensitive DNA biosensing using active two-mode microfiber ring laser functionalized by self-assembled DNA nanoprobes. Applied Physics Letters. https://doi.org/10.1063/5.0309643