L28_A

         Record Short Pulses & MIFA
        2.1 fs (2011)
               FROG‐CRAB method
             Time‐of‐flight (TOF) spectrometer

              Info built in the electron spectrogram

              Measurement results

              Modified Interferometric Field Autocorrelation (MIFA)

              SHG with thick crystal

              SHG formalism

              Insight

 

L28_B

        Modified Interferometric Field Autocorrelation (MIFA)
        Modified field autocorrelation function
        MIFA: Frequency‐selective IA
        Example: Chirped pulse with double peaks
        How to retrieve G'1(τ) from S1(τ)?
        What can we know from G'1(τ)?
        Two traces & complete phase retrieval
        How to retrieve the complete phase
        Experimental results
        400 fs MIFA setup
        Record sensitivity
        7.2 fs MIFA setup
        7.2 fs pulse measurement
              Mid‐infrared MIFA setup

              MIR pulse measurement

              Advantages & limitations