Rapid measurement of ultrashort-pulse amplitude and phase from a two-photon absorption sonogram trace

Cormack, I.G.; Sibbett, W.; Reid, Derryck T.

doi:10.1364/josab.18.001377

Cited by 22 publications

(16 citation statements)

References 15 publications

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“…Frequency-resolved optical gating (FROG, [1,2]) is the pioneer among these techniques and relies on measuring spectrally resolved autocorrelation traces. Conceptually related methods include the sonogram method [3,4], multiphoton intrapulse interference phase scan (MIIPS, [5,6]), dispersion scan (d-scan, [7,8]), and chirp scan [9]. While the latter two related techniques are only a few years old, dispersion scan has recently proven a remarkable potential to accurately measure few-cycle pulses generated by compression of hollow-fiber supercontinua [10,11].…”

Section: Introductionmentioning

confidence: 99%

Advanced phase retrieval for dispersion scan: a comparative study

et al. 2017

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Dispersion scan is a self-referenced measurement technique for ultrashort pulses. Similar to frequencyresolved optical gating, the dispersion scan technique records the dependence of nonlinearly generated spectra as a function of a parameter. For the two mentioned techniques, these parameters are the delay and the dispersion, respectively. While dispersion scan seems to offer a number of potential advantages over other characterization methods, in particular for measuring few-cycle pulses, retrieval of the spectral phase from the measured traces has so far mostly relied on the Nelder-Mead algorithm, which has a tendency of stagnation in a local minimum and may produce ghost satellites in the retrieval of pulses with complex spectra. We evaluate three different strategies to overcome these retrieval problems, namely regularization, use of a generalized-projections algorithm, and an evolutionary retrieval algorithm. While all these measures are found to improve the precision and convergence of dispersion scan retrieval, differential evolution is found to provide best performance, enabling the near-perfect retrieval of the phase of complex supercontinuum pulses within less than ten seconds, even in the presence of strong detection noise and limited phase-matching bandwidth of the nonlinear process.

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Section: Introductionmentioning

confidence: 99%

Advanced phase retrieval for dispersion scan: a comparative study

et al. 2017

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“…Thus, the test pulse is spectrally filtered (amplitude stationary filter) and then temporally resolved (amplitude nonstationary filter), see Figure 3.16. This can be achieved, for example, by spectrally filtering the pulse and then using frequency up-conversion with the unfiltered pulse in a nonlinear crystal [78]. Since sonography is often more technically challenging to implement than its spectrographic cousin, it is not as widely used, although the measured signal and inversion algorithm is similar to spectrography [66,79].…”

Section: Sonographymentioning

confidence: 99%

Ultrashort Pulse Characterization

Wyatt

2014

Attosecond and XUV Physics

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“…Complete characterization of the pump and idler pulses was achieved using the cross-correlation sonogram technique [22], schematically depicted in Fig. 3.…”

Section: Experimental Arrangementmentioning

confidence: 99%

Experimental investigation of parametric transfer in synchronously pumped optical parametric oscillators

et al. 2007

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We experimentally investigate the parameters affecting parametric transfer in a SPOPO for indirect shaping of MIR ultrashort pulses and make comparisons with previously reported numerical modeling. The individual effects of the parameters are discussed in detail. We conclude that signal bandwidth narrowing, minimal signal amplification, large pump depletion, cavity length tuning and minimal pump and idler temporal walk-off are required for high fidelity transfer, which we are able to demonstrate for a strongly chirped pump pulse.

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Rapid measurement of ultrashort-pulse amplitude and phase from a two-photon absorption sonogram trace

Cited by 22 publications

References 15 publications

Advanced phase retrieval for dispersion scan: a comparative study

Advanced phase retrieval for dispersion scan: a comparative study

Ultrashort Pulse Characterization

Experimental investigation of parametric transfer in synchronously pumped optical parametric oscillators

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