Robust Ultrashort Light Bullets in Strongly Twisted Waveguide Arrays
Robust Ultrashort Light Bullets in Strongly Twisted Waveguide Arrays
We introduce a new class of stable light bullets that form in twisted waveguide arrays pumped withultrashort pulses, where twisting offers a powerful knob to tune the properties of localized states.We find that above a critical twist, three-dimensional wavepackets are unambiguously stabilized,with no minimum energy threshold. As a consequence, when …