Using /spl chi//sup (3/) to measure the intensity and phase of an ultrashort laser pulse: frequency-resolved optical gating

We have developed a simple, intuitive, self-contained, and general technique for measuring the intensity and phase of a single arbitrary ultrashort pulse. We use a novel arrangement and reduce the mathematics of the problem to a two-dimensional phase-retrieval problem - a well-known, solved problem...

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Bibliographic Details
Main Authors: Trebino, R., DeLong, K.W., Kane, D.J.
Format: Conference Proceeding
Language:English
Subjects:
Acoustic pulses
Chirp
Delay
Focusing
Frequency measurement
Iterative algorithms
Lenses
Optical pulses
Phase measurement
Pulse measurements
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Summary:We have developed a simple, intuitive, self-contained, and general technique for measuring the intensity and phase of a single arbitrary ultrashort pulse. We use a novel arrangement and reduce the mathematics of the problem to a two-dimensional phase-retrieval problem - a well-known, solved problem from image science. Our technique, frequency-resolved optical gating (FROG), requires splitting the pulse into two variably delayed replicas, which then cross in any instantaneously responding nonlinear-optical medium. A single-shot optical-gate arrangement yields a signal-pulse electric field. The signal-pulse spectrum is then measured vs. the delay.< >
DOI:10.1109/LEOS.1993.379435