Cross Correlation Frequency Resolved Optical Gating for Test Pulse Characterization Using a Self Diffraction Signal of a Reference Pulse
A diagnostic system using three frequency resolved optical gating (FROG) techniques cross correlation, second harmonic generation, and self diffraction is reported for the reliable characterization of femtosecond laser pulses. The latter two FROG techniques are employed to evaluate suitability in measurements of the reference pulse. A train of optical pulses generated by the superposition of two femtosecond pulses emitting at 800 nm and 1180 nm has been characterized by the cross correlation FROG to evaluate the reliability of the present diagnostic system.