Generation and characterization of few-pulse attosecond pulse trains at 100kHz repetition rate

TL;DR

This paper demonstrates the generation and detailed characterization of high-repetition-rate, few-pulse attosecond pulse trains in the XUV spectrum using a 7fs laser system, enabling advanced attosecond experiments.

Contribution

It introduces a method to produce and fully characterize attosecond pulse trains at 100kHz, advancing high-repetition-rate attosecond science.

Findings

Successful generation of 100kHz attosecond pulse trains.

Complete characterization using FROG-CRAB technique.

Potential for enhanced pump-probe experiments.

Abstract

Many experiments in attosecond science will benefit from attosecond pulses at high repetition rates with sufficient photon flux for pump-probe experiments. We use 7fs, 800nm pulses from a non-collinear optical parametric chirped pulse amplification (NOPCPA) laser system to generate few-pulse attosecond pulse trains (APTs) in the extreme ultraviolet (XUV) at a repetition rate of 100kHz. The pulse trains have been fully characterized by recording FROG-CRAB (Frequency-Resolved Optical Gating for Complete Reconstruction of Attosecond Bursts) traces with a velocity map imaging spectrometer.