Measurement of several tens pico-second laser pulses using a single-shot frequency resolved optical grating method

This paper demonstrates the measurement method of several tens ps laser pulses based on the frequency-resolved optical gating (FROG). The huge pulse front tilt generated by a holographic grating increases the temporal range of the device which can make a single-shot measurement of several tens ps laser pulses. In order to prove the demonstrated measurement technique we generated double pulses using a Michelson interferometer. The duration of the single pulse is about 700fs and the measured delay of two pulses is 60ps, which implies that the maximum delay is about 120 ps. If we consider the tail and head of the laser pulses, the maximum measurable laser pulse duration is around 40ps.