title: Single-shot laser pulse reconstruction based on self-phase modulated spectra measurements.
abstract: We report a method for ultrashort pulse reconstruction based only on the pulse spectrum and two self-phase modulated (SPM) spectra measured after pulse propagation through thin media with a Kerr nonlinearity. The advantage of this method is that it is a simple and very effective tool for characterization of complex signals. We have developed a new retrieval algorithm that was verified by reconstructing numerically generated fields, such as a complex electric field of double pulses and few-cycle pulses with noises, pedestals and dips down to zero spectral intensity, which is challenging for commonly used techniques. We have also demonstrated a single-shot implementation of the technique for the reconstruction of experimentally obtained pulses. This method can be used for high power laser systems operating in a single-shot mode in the optical, near- and mid-IR spectral ranges. The method is robust, low cost, stable to noise, does not require a priori information, and has no ambiguity related to time direction.
authors.affiliation: Institute of Applied Physics of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia.
authors.forename: Elena A
authors.initials: EA
authors.lastname: Anashkina
authors.affiliation: Institute of Applied Physics of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia.
authors.forename: Vladislav N
authors.initials: VN
authors.lastname: Ginzburg
authors.affiliation: Institute of Applied Physics of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia.
authors.forename: Anton A
authors.initials: AA
authors.lastname: Kochetkov
authors.affiliation: Institute of Applied Physics of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia.
authors.forename: Ivan V
authors.initials: IV
authors.lastname: Yakovlev
authors.affiliation: Institute of Applied Physics of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia.
authors.forename: Arkady V
authors.initials: AV
authors.lastname: Kim
authors.affiliation: Institute of Applied Physics of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia.
authors.forename: Efim A
authors.initials: EA
authors.lastname: Khazanov