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Polarization pulse shaper is used in spectral phase retrieval for the first time (to our best knowledge). The implemented dual-quadrature spectral shearing interferometry is self-referenced and can measure pulse trains of 100% duty cycle.
We proposed a non-iterative data inversion process for the PROOF method that could measure attosecond extreme ultraviolet pulses. Our experiments successfully retrieved the spectral phases of near infrared comb.
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