Amplified shaped ultrashort pulses in the visible by a double stage non-collinear optical parametric process
A double stage noncollinear optical parametric process was used to generate amplified shaped ultrashort pulses in the visible light range. The pulses were shaped in the spectral domain by the Acousto-optic modulation (AOM) technique. Pulse shapes were characterized by a cross-correlation variant of the spectrally and temporally resolved upconversion technique (STRUT). Amplification of the shaped pulse by the non-collinear optical process recovered a significant amount of energy lost in the pulse shaping process.