Temporal compression of picosecond low peak power optical pulses using freeform SiN waveguides

The development of on-chip pulse compression is fundamental for fully integrated optical systems, and applications in ultrafast physics, metrology and non-linear optics. The optimization of this process to unlock the possible used of integrated semiconductor lasers as the seed of nonlinear phenomena is pivotal for applications. We present here a process based on the use of an optimization methods to determine a nearly-free-form waveguide profile along light propagation towards high efficiency on-chip pulse compression capped with the availabilities of integrated light sources.