Highly versatile, two-color setup for high-order harmonic generation using spatial light modulators

TL;DR

This paper introduces a versatile interferometric two-color high-order harmonic generation setup utilizing spatial light modulators, enabling precise control and automation for advanced ultrafast laser experiments.

Contribution

It presents a novel interferometric configuration with spatial light modulators for flexible, automated control of two-color high-order harmonic generation.

Findings

Enhanced control over beam profiles and delays

Automated parameter scans and live diagnostics

Stable, versatile setup for high-order harmonic experiments

Abstract

We present a novel, interferometric, two-color, high-order harmonic generation setup, based on a turn-key Ytterbium-doped femtosecond laser source and its second harmonic. Each interferometer arm contains a spatial light modulator, with individual capabilities to manipulate the spatial beam profiles and to stabilize the relative delay between the fundamental and the second harmonic. Additionally, separate control of the relative power and focusing geometries of the two color beams is implemented to conveniently perform automatized scans of multiple parameters. A live diagnostics system gives continuous information during ongoing measurements.