Háskóli ÍslandsUniversity of IcelandTapia Rodriguez, Lucy E.Walker, Paul M.Sigurdsson, HelgiRoyall, BenFarrer, IanRitchie, David A.Yulin, Alexey V.Shelykh, IvanSkolnick, Maurice S.Krizhanovskii, Dmitry N.2020-05-042020-05-042019-04-03Lucy E. Tapia Rodriguez, Paul M. Walker, Helgi Sigurdsson, Ben Royall, Ian Farrer, David A. Ritchie, Alexey V. Yulin, Ivan A. Shelykh, Maurice S. Skolnick, and Dmitry N. Krizhanovskii, "Amplification of nonlinear polariton pulses in waveguides," Optics Express 27, 10692-10704 (2019)1094-4087https://hdl.handle.net/20.500.11815/1772Publisher's version (útgefin grein)Using a sub-millimeter exciton-polariton waveguide suitable for integrated photonics, we experimentally demonstrate nonlinear modulation of pico-Joule pulses at the same time as amplification sufficient to compensate the system losses. By comparison with a numerical model we explain the observed interplay of gain and nonlinearity as amplification of the interacting polariton field by stimulated scattering from an incoherent continuous-wave reservoir that is depleted by the pulses. This combination of gain and giant ultrafast nonlinearity operating on picosecond pulses has the potential to open up new directions in low-power all-optical information processing and nonlinear photonic simulation of conservative and driven-dissipative systems.10692eninfo:eu-repo/semantics/openAccessNonlinear opticsOptical dataPhotonsWaveguidesLjósfræðiBylgjufræðiinfo:eu-repo/semantics/articleOptics Express10.1364/OE.27.010692