Optical coatings with extremely low scattering losses are critical in high-precision optical systems. In this study, the abnormal scattering of nodular defects in high-reflection multilayer coatings was investigated experimentally and theoretically. The measurements and finite-difference time-domain simulations showed that the total scattering does not vary monotonically with increasing nodular structure size, but rather oscillates. Field distribution analysis revealed that the anomalous scattering originates from the coupling of the incident light with the surface wave at the top of the defects. These findings contribute to the field of low-scattering-loss multilayer coatings and high-precision optical systems.

Yuzhi Shi, Ai Qun Liu, Cheng-Wei Qiu, et al. Nano Letters, 2022, 22, 1769

Huang, D., Jiang, T., Yi, Y., Shan, Y., Li, Y., Zhang, Z., Liu, K., Liu, W.-T., Wu, S.*, Selective excitation of four-wave mixing by helicity in gated graphene. Optics Letters 47, 234-237 (2022).

Helmrich, S., Sampson, K., Huang, D., Selig, M., Hao, K., Tran, K., Achstein, A., Young, C., Knorr, A., Malic, E., Woggon, U., Owschimikow, N.*, Li X.*, Phonon-assisted intervalley scattering determines ultrafast exciton dynamics in MoSe 2 bilayers. Physical Review Letters 127, 157403 (2021).

Q. Sun, C. Wang, Q. Fu, X. Dun, W. Heidrich, ACM Transactions on Graphics, 38(6)（2021

Hu, Y., Teat, S.J., Gong, W., Zhou, Z., Chen, J., Wu, J., Cui, Y., Jiang, T., Cheng, X., Zhang, W., Single crystals of mechanically entwined helical covalent polymers. Nature Chemistry 13, 660-665 (2021).

Menges, F.*, Yang, H., Berweger, S., Roy, A., Jiang, T., Raschke, M. B.*, Substrate-enhanced photothermal nano-imaging of surface polaritons in monolayer graphene. APL Photonics 6, 041301 (2021)

Zhang, S., Huang, D., Gu, L., Wang, Y., Wu, S.*, Substrate dopant induced electronic inhomogeneity in epitaxial bilayer graphene. 2D Materials 8, 035001 (2021).

Lingyun Xie, Jinlong Zhang, Zhanyi Zhang, Bin Ma, Tongbao Li, Zhanshan Wang, and Xinbin Cheng, (2021), Optics Express, 29,2,2669-2678

May, M. A.#, Jiang, T.#, Du, C., Park, K.-D., Xu, X., Belyanin, A.*, Raschke, M. B.*, Nanocavity clock spectroscopy: resolving competing exciton dynamics in WSe2/MoSe2 heterobilayers. Nano Letters 21, 522-528 (2020). (#Contributed equally).