# Generation and Characterization of Tailored MIR Waveforms for Steering Molecular Dynamics

## TL;DR

This paper introduces a compact MIR laser source capable of generating and shaping tailored waveforms in the 8-15 μm range, enabling precise control of molecular dynamics through advanced pulse shaping techniques.

## Contribution

The work presents a novel optical parametric amplifier platform for MIR pulse generation and shaping with high spectral and phase resolution, advancing control over molecular reactions.

## Key findings

- Achieved spectral resolution of 60 GHz over 5 THz bandwidth.
- Demonstrated temporal shaping window of 1.8 ps.
- Phase modulation resolution of 100 mrad for picosecond delays.

## Abstract

The dream of physico-chemists to control molecular reactions with light beyond electronic excitations pushes the development of laser pulse shaping capabilities in the mid-infrared (MIR) spectral range. Here, we present a compact optical parametric amplifier platform for the generation and shaping of MIR laser pulses in the wavelength range between $8\,\mu$m and $15\,\mu$m. Opportunities for judiciously tailoring the electromagnetic waveform are investigated, demonstrating light field control with a spectral resolution of 60 GHz at a total spectral bandwidth of 5 THz. In experiments focusing on spectral amplitude manipulation these parameters result in a time window of 1.8 ps available for shaping the temporal pulse envelope and a phase modulation resolution of 100 mrad for several picosecond delays.