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Free keywords:
Materials Science; Physics; Single-shot pulse measurement; Intensity profile reconstruction;
Self-phase modulation; Kerr nonlinearity;
Abstract:
The single-shot reconstruction of an ultrashort pulse from a fiber laser system by the method based on recording and numerical processing of two self-phase modulated spectra after a nonlinear fiber is demonstrated experimentally. The 0.7-ps asymmetrical signal with an energy of similar to 1 mu J retrieved by this method without time direction ambiguity is in good agreement with independent measurements by second harmonic generation frequency-resolved optical gating (SHG FROG) technique.