منابع مشابه
Attosecond Metrology and Spectroscopy
The origin of attosecond metrology is linked to the advent of ultrashort mode locked laser sources femtosecond lasers, chirped pulse amplification, carrier-envelope-phase stabilization and the technological aspects of this development that rendered experiments with a temporal resolution of tens of attoseconds possible. The high-order harmonicgeneration process yields laser pulses in the wavelen...
متن کاملOptimization of attosecond pulse generation.
The generation of attosecond pulses by superposition of high harmonics relies on their synchronization in the emission. Our experiments in the low-order, plateau, and cutoff regions of the spectrum reveal different regimes in the electron dynamics determining the synchronization quality. The shortest pulses are obtained by combining a spectral filtering of harmonics from the end of the plateau ...
متن کاملAttosecond metrology in the few-optical-cycle regime
The polarization gating method in combination with few-opticalcycle driving pulses with controlled waveform is a powerful technique for the generation of isolated few-cycle attosecond pulses. We show that such a technique allows one to generate attosecond pulses tunable in a broad spectral region, corresponding to more than 26 eV. Complete temporal characterization of the attosecond pulses has ...
متن کاملAttosecond metrology: from electron capture to future signal processing
205 Attosecond science represents the culmination of the longstanding investigation of fast-evolving phenomena in nature. After the concepts of pump–probe spectroscopy1 and optical synchronization2 were introduced in the nineteenth century, subsequent progress in improving the temporal resolution of time-resolved measurements was dictated by the development of light sources capable of producing...
متن کاملSpectral signature of short attosecond pulse trains.
We report experimental measurements of high-order harmonic spectra generated in Ar using a carrier-envelope-offset (CEO) stabilized 12 fs, 800 nm laser field and a fraction (less than 10%) of its second harmonic. Additional spectral peaks are observed between the harmonic peaks, which are due to interferences between multiple pulses in the train. The position of these peaks varies with the CEO ...
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ژورنال
عنوان ژورنال: APL Photonics
سال: 2019
ISSN: 2378-0967
DOI: 10.1063/1.5086773