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  • Title: Blind frequency-resolved optical-gating pulse characterization for quantitative differential multiphoton microscopy.
    Author: Field JJ, Durfee CG, Squier JA.
    Journal: Opt Lett; 2010 Oct 15; 35(20):3369-71. PubMed ID: 20967069.
    Abstract:
    We use a unique multifocal multiphoton microscope to directly characterize the pulse in the focal plane of a high-NA objective using second-harmonic generation frequency-resolved optical gating (FROG). Because of the nature of the optical setup, femtosecond laser pulses of orthogonal polarization states are generated in the focal plane, each acquiring a different spectral dispersion. By applying an additional constraint on the phase extraction algorithm, we simultaneously extract both the gate and probe pulses from a single spectrogram with a FROG error of 0.016.
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