Near-field imaging for single-shot waveform measurements

Abstract

Abstract. The accurate measurement of ultrashort pulses is necessary to optimize pulse compression for nonlinear optics and strong field physics. Additionally, fieldsensitive time-domain techniques enable measuring femtosecond and sub-femtosecond dynamics. In this paper, we introduce a single-shot measurement to characterize fewcycle fields. This polarization-sensitive time-domain measurement can retrieve the waveform of pulses shorter than two-cycles in duration with a temporal window of hundreds of femtoseconds. We measure how the field changes after propagation through dispersive optics, and we measure the sub-femtosecond phase shift imposed by the nonlinear intensity dependent response of a dielectric. Real-time field measurements will benefit low repetition rate systems used in strong-field physics and attosecond science, while the large temporal window compliments Fourier transform spectroscopy.

Reconstruction algorithm for tunneling ionization with a perturbation for the time-domain observation of an electric-field

“…Many temporal characterization techniques have been developed. Frequency-domain techniques such as autocorrelation 1 , 2 , frequency-resolved optical gating (FROG) 3 , spectral phase interferometry for direct electric field reconstruction (SPIDER) 4 , dispersion scan (D-scan) 5 , self-referenced spectral interferometry (Wizzler) 6 and their variations 7 , 8 have been widely used thanks to their simple implementation. However, the frequency-domain techniques have several limitations.…”

Reconstruction algorithm for tunneling ionization with a perturbation for the time-domain observation of an electric-field

“…Several techniques such as autocorrelation 1,2 , frequency-resolved optical gating (FROG) 3 , spectral phase interferometry for direct electric eld reconstruction (SPIDER) 4 , dispersion scan (D-scan) 5 , self-referenced spectral interferometry (Wizzler) 6 and their variations 7,8 have been successfully applied for various applications. However, these techniques rely on the nonlinear response of a material, such as secondharmonic generation, self-diffraction, and cross-polarized wave generation.…”

Single-shot Dispersion Sampling for Optical Pulse Reconstruction

“…While the spectral amplitude is readily obtained using a spectrometer, measuring the spectral phase is more challenging. Techniques with varying complexity have been developed over the past years to determine the spectral phase of short laser pulses [1][2][3][4][5][6][7][8][9][10][11]. Popular methods such as FROG [1] and SPIDER [2] use a copy of the pulse to provide a reference.…”