All-fiber picosecond laser source based on nonlinear spectral compression

摘要

The authors report the realization of an all-fiber system emitting high-quality ultrashort powerful light pulses at 1060 nm. The oscillator-amplifier system is intended for compact visible light generation via frequency conversion. Optical nonlinearity in a fiber amplifier is employed to compress the spectrum of pulses negatively prechirped in a hollow core photonic bandgap fiber. Second-harmonic generation in a periodically poled crystal is demonstrated.