• Demonstration of a photonic-lantern focal-plane wavefront sensor using fiber mode conversion and deep learning 

      Norris, Barnaby; Wei, Jin; Betters, Christopher H.; Leon-Saval, Sergio G.; Xin, Yinzi; Lin, Jonathan; Kim, Yoo Jung; Sallum, Steph; Lozi, Julien; Vievard, Sebastian; Guyon, Olivier; Gatkine, Pradip; Jovanovic, Nemanja; Mawet, Dimitri; Fitzgerald, Michael P.
      Published 2022
      A focal plane wavefront sensor offers major advantages to adaptive optics, including removal of non-commonpath error and providing sensitivity to blind modes (such as petalling). But simply using the observed point spread ...
      Conference paper
    • The photonic lantern wavefront sensor and imager: focal plane wavefront sensing and optimal imaging at the diffraction limit and beyond 

      Norris, Barnaby; Leon-Saval, Sergio G.; Wei, Jin; Betters, Christopher H.; Taras, Adam; Lin, Jonathan; Xin, Yinzi; Kim, Yoo Jung; Fitzgerald, Michael; Sallum, Steph; Sengupta, Aditya; Gatkine, Pradip; Jovanovic, Nemanja; Mawet, Dimitri; Lozi, Julien; Vievard, Sebastian; Deo, Vincent; Lallement, Manon; Levinstein, Daniel; Guyon, Olivier
      Published 2024
      The use of a photonic lantern as focal plane wavefront sensor has seen recent widespread interest - it can remove non-common-path aberrations, accurately sense low-wind-effect and petal modes, and provide wavelength ...
      Conference paper
    • Optimization of nonlinear enhancement through linear dispersion engineering 

      Lourdesamy, Joshua P.; Widjaja, Justin; Hawi, Georgio; Kesarwani, Sharvil; Runge, Antoine F. J.; de Sterke, C. Martijn
      Published 2023
      We consider nonlinear pulse propagation in media with a dispersion relation exhibiting $J$ periodically spaced identical maxima in a co-moving frame. The nonlinear interactions lead to $J$ pulses centered at each of these ...
      Open Access
      Article
    • Absence of Galilean invariance for pure-quartic solitons 

      Widjaja, Justin; Kobakhidze, Erekle; Cartwright, Tiernan R; Lourdesamy, Joshua P.; Runge, Antoine F. J.; Alexander, Tristram J.; de Sterke, C. Martijn
      Published 2021
      Optical temporal solitons, arising from self-phase modulation and negative quadratic ($\beta_2$) dispersion, are Galilean invariant, and therefore their properties do not depend on their group velocity. This is no longer ...
      Open Access
      Article
    • Theory of multicolor soliton microcombs 

      Silvestri, Carlo; Widjaja, Justin; Lin, Austin; de Sterke, C. Martijn; Runge, Antoine F. J.
      Published 2025
      We present a general theory of multicolor soliton microcombs. These frequency combs require engineered dispersion and have an optical spectrum consisting of multiple spectral windows, centered at distinct frequencies. Our ...
      Open Access
      Article