Simultaneous generation of the 2nd and 3rd harmonic, excited by linearly
frequency- chirped fundamental pulse in quasi-phase matched grating with linearly varying
inverse domain sizes has been studied numerically with taking into account effects of the
group velocity mismatches and dispersions. Mechanisms of efficient nonlinear pulse
compressions and conversion efficiencies of the generated harmonics have been analyzed.
Simultaneous generation of the 2nd and 3rd harmonic, excited by linearly
frequency- chirped fundamental pulse in quasi-phase matched grating with linearly varying
inverse domain sizes has been studied numerically with taking into account effects of the
group velocity mismatches and dispersions. Mechanisms of efficient nonlinear pulse
compressions and conversion efficiencies of the generated harmonics have been analyzed.
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