Abstract
Recently, we developed a simple and general technique, which we call Frequency-Resolved Optical Gating (FROG), that succeeds in measuring the full intensity and phase evolution of an individual, arbitrary ultrashort pulse.1–3 In brief, FROG involves measuring the pulse spectrogram, i.e., the spectrum of the signal pulse in an auto- or cross-correlation (using any instantaneous nonlinearity), yielding signal intensity vs. delay and frequency.
© 1994 Optical Society of America
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