Spatio-temporal characterization of mid-infrared laser pulses with spatially encoded spectral shearing interferometry

TL;DR

This paper presents a method for spatially and temporally characterizing mid-infrared laser pulses using a novel SEA-SPIDER technique with spectral filters, enabling versatile, high-resolution measurements across a broad wavelength range.

Contribution

The study introduces a single, adaptable device for full amplitude and phase characterization of mid-infrared pulses from 1 to 2 μm, using spectral filtering for ancilla generation.

Findings

Successful spatially resolved amplitude and phase measurements

Versatile characterization across 1 to 2 μm wavelengths

Minimal adjustments needed for different spectral filters

Abstract

We report on the spatially resolved full amplitude and phase characterization of mid-infrared high intensity laser pulses generated in a three stage OPA. We use a spatially-encoded arrangement (SEA-)SPIDER with spectral filters for ancilla generation for spatially resolved characterization. Using five interchangeable filter sets we are able to characterize pulses from 1 to 2{\mu}m with one single device with minimal adjustments.