Abstract
A Si3N4 horizontal slot waveguide with SiO2 cladding is designed to achieve flat negative dispersion over an octave-spanning bandwidth. 448× temporal broadening can be achieved for a 10-fs pulse after a 5-cm waveguide propagation. Together with the inherent low nonlinearity, it could be a key building block in on-chip chirped pulse amplification system with <10-fs pulse and >10-kW peak power.
© 2018 The Author(s)
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