Determination of the pulse response from intensity autocorrelation measurements of ultrashort laser pulses

All-solid-state cavity-dumped sub-5-fs laser

“…In a number of simulations we found that the precision of the experimental data and sampling of time and frequency arrays used in the calculations are the major factors limiting the convergence of the algorithm. Note that no minimum phase assumption (as in [117]) has been made.…”

“…3 Peatross et al recently demonstrated temporal decorrelation of the intensity autocorrelation function [115]. Their idea based on the application of the Wiener-Khinchin theorem to G(τ) [117]:…”

Temporal decorrelation of short laser pulses

“…The need to determine the temporal profile of ultrashort laser pulses, both amplitude and phase, has driven a number of innovations in measurement and pulse reconstruction techniques. [1][2][3][4][5][6][7][8][9][10][11][12][13] (For a review, see Ref. 13.…”

“…One of the simplest and most common approaches is the technique of autocorrelation, in which a replica of the laser pulse combines with the original pulse in some nonlinear process such as second-order harmonic generation. [1][2][3]13 Although autocorrelation provides useful information such as an approximate duration for the pulse, the measurement is generally regarded as losing the details of the temporal profile. To gain further insight into the characteristics of the laser-pulse profile, one often relies on assumptions and/or additional information obtained from other measurements.…”

“…4 Other methods introduce information from spectral measurements of the laser pulse and/or the correlated signal [4][5][6][7][8][9][10]12,13 and may rely on polynomial or other functional interpolations to approximate phase variations. 3 The recently developed technique 8,9,21 of frequencyresolved optical gating (FROG) applies the information obtained from a spectral analysis of the correlated signal to extract in an iterative procedure the temporal charac-teristics of a pulse. This approach is relatively successful and has recently gained wide use.…”