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Related Articles from SNS
Topological antilaser
arXiv:2601.17719v2 Announce Type: replace Abstract: Coherent perfect absorption (CPA)-the time-reversed operation of lasing at threshold-relies on finely tuned interference and is intrinsically fragile to disorder and structural imperfections. Whether absorption can be endowed with topological protection, by analogy to topological lasing, has remained an open question. Here, we experimentally demonstrate a topological antilaser: the time-reversed counterpart of a topological laser, in which...
Orbital Angular Momentum Locking via Bound States in the Continuum
Announce Type: new Abstract: Optical vortices are electromagnetic fields twisting around a phase singularity, resulting in quantized orbital angular momentum (OAM). When such vortices are formed by evanescent hybrid light-matter quasiparticles known as polaritons, they are referred to as polaritonic vortices (PVs). The nanometer-scale topologically robust features of such PVs promise to enable applications for lasing and thermal emission at deeply subwavelength scales.
Jacobs at practice as prosecutors mull charges
GREEN BAY, Wis. -- Josh Jacobs is practicing with the Green Bay Packers while prosecutors consider whether to file charges against the three-time Pro Bowl running back following his arrest on domestic abuse allegations. Jacobs was on the field Tuesday for the Packers' second week of organized team activities. Packers coach Matt LaFleur said before Tuesday's practice that Jacobs' situation hasn't caused distractions.
Analysis of multi-pass pumped thin-disk laser performance with measured disk deformation
arXiv:2512.05771v3 Announce Type: replace Abstract: Predicting the steady-state performance of high-power thin-disk lasers requires not only pump-signal energy transfer but also how disk deformation contributes intra-cavity mode formation. In this work, we address the output-power reduction that occurs even when the laser remains in a single-mode regime with $\mathrm{M^2}$ around 1.1.