Generation of dual-wavelength pulses by frequency doubling with quasi-phase-matching gratings.
We demonstrate generation of two synchronized picosecond pulses at different wavelengths near 778 nm by frequency doubling of a femtosecond pulse. We use nonlinear frequency filtering with quasi-phase-matching gratings, which allow us to obtain second-harmonic spectral intensities that are higher than the spectral intensities of the pump.
Imeshev
G
G
Fejer
M M
MM
Galvanauskas
A
A
Harter
D
D