Spatiotemporal pulse characterization with far-field beamlet cross-correlation
Abstract
We present a novel, straightforward method for spatiotemporal characterization of ultra-short laser pulses. The method employs far-field interferometry and inverse Fourier transform spectroscopy, built on the theoretical basis derived in this paper. It stands out in its simplicity: it requires few non-standard optical elements and simple analysis algorithms. This method was used to measure the space-time intensity of our 100 TW class laser and to test the efficacy of a refractive doublet as a suppressor of pulse front curvature (PFC). The measured low-order spatiotemporal couplings agreed with ray-tracing simulations. In addition, we demonstrate a one-shot measurement technique, derived from our central method, which allows for quick and precise alignment of the compressor by pulse front tilt (PFT) minimization and for optimal refractive doublet positioning for the suppression of PFC.
Cite
@article{arxiv.2202.13139,
title = {Spatiotemporal pulse characterization with far-field beamlet cross-correlation},
author = {Slava Smartsev and Sheroy Tata and Aaron Liberman and Michael Adelberg and Arujash Mohanty and Eitan Y. Levine and Omri Seemann and Yang Wan and Eyal Kroupp and Ronan Lahaye and Cedric Thaury and Victor Malka},
journal= {arXiv preprint arXiv:2202.13139},
year = {2024}
}