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physics.optics2026
Absence of universal backscattering immunity in reciprocal photonic waveguides
Yecheng Hu, Ming Gao, Wei Xie +6
Suppressing parasitic back-reflection caused by imperfections, such as random defects, material inhomogeneities, localized inclusions, and fabrication-induced geometric deviations,…
physics.optics2026
Inverse-Designed Metasurfaces for Compact Optical Skyrmion Generation with High Topological Fidelity
Donghyun Park, Alex Song, Haejun Chung +1
Optical skyrmions are structured vector fields with nontrivial polarization topology and subwavelength-scale features. One common approach to generating optical skyrmions is the su…
physics.optics2026
Asymptotic stability of laser-driven lightsails: Enhancement by optical dispersion engineering in gratings
Jadon Y. Lin, Liam van Ravenstein, C. Martijn de Sterke +3
Lightsails are promising spacecraft that can traverse interstellar distances within decades via radiation-pressure propulsion from high-power lasers. The envisioned missions crucia…