A Dual-Sideband Attosecond Interferometry Setup

Muhammad Jahanzeb; Marvin Schmoll; Paul Weizel; Simon Majoni; Ronak Narendra Shah; Mario Niebuhr; Cristian Manzoni; Giuseppe Sansone

arXiv · 2603.27477

A Dual-Sideband Attosecond Interferometry Setup

Muhammad Jahanzeb·Marvin Schmoll·Paul Weizel·Simon Majoni·Ronak Narendra Shah·Mario Niebuhr·Cristian Manzoni·Giuseppe Sansone

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Abstract

We present the development and implementation of an experimental setup designed to investigate attosecond photoionization delays using a dual-sideband RABBITT (Reconstruction of Attosecond Beating By Interference of Two-Photon Transitions) technique. The setup utilizes an attosecond extreme ultraviolet source from high-harmonic generation driven by a carrier-envelope-phase-stabilized Ti:sapphire laser centered at 800 nm. The extreme ultraviolet radiation is synchronized with a 1200 nm infrared probe pulse generated via a non-collinear optical parametric amplifier. Active delay stabilization by means of a spectrally resolved interferometer signal achieves 45 as root-mean-square timing precision and enables the observation of sideband oscillations. Taking advantage of the dependence of the sideband signal on the carrier-envelope phase of the driving field, we report sideband-yield oscillations as a function of this parameter.

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Muhammad Jahanzeb, Marvin Schmoll, Paul Weizel, Simon Majoni, Ronak Narendra Shah, Mario Niebuhr, Cristian Manzoni, Giuseppe Sansone. 2026-03-29. A Dual-Sideband Attosecond Interferometry Setup. https://arxiv.org/abs/2603.27477

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