Observation of temporal solitons in second-harmonic generation with tilted pulses

By eliminating the group-velocity mismatch and enhancing the group-velocity dispersion via pulse front tilting, we obtained the formation of temporal solitary waves in phase-mismatched second-harmonic generation. Experimental and numerical results match well in a wide range of intensities and Delta k's. In a 7 mm BBO crystal, 58 fs, 527 nm pulses are obtained starting from 200 fs pump, at the same wavelength.