Quadratic Soliton Frequency Comb at 4 μm from an OP-GaP-Based Optical Parametric Oscillator

摘要

We report generation of quadratic solitons, i.e. temporal simultons, in an OP-GaP based half-harmonic optical parametric oscillator. We achieve 4-μm pulses with sech² spectrum of 790nm FWHM bandwidth, 197% slope efficiency, and 38% conversion efficiency.