Generation of Intense Deep-Ultraviolet Pulses at 200 nm
Abstract
We report the generation of intense deep ultraviolet pulses at 200 nm with a duration of 48 fs and pulse energy of 130 uJ, achieved via cascaded sum frequency generation using 800 nm femtosecond pulses in barium borate crystals. Efficient frequency up-conversion is realized by optimizing phase-matching conditions and implementing dispersion control, while maintaining the ultrashort pulse characteristics. The generated deep ultraviolet pulses are characterized using two-photon absorption frequency-resolved optical gating, providing detailed insight into their temporal profile and phase. This approach addresses key challenges in ultrashort deep ultraviolet pulse generation, delivering a high-energy, ultrashort source suitable for ultrafast spectroscopy, nonlinear optics, and strong-field physics. These results represent a significant advancement in the generation of high-energy, ultrashort deep ultraviolet pulses, opening new possibilities for time-resolved investigations in ultrafast molecular dynamics, as well as emerging applications in semiconductor science, quantum materials, and photochemistry.
Keywords
Cite
@article{arxiv.2507.02756,
title = {Generation of Intense Deep-Ultraviolet Pulses at 200 nm},
author = {X. Xie and S. Soultanis and G. Knopp and A. L. Cavalieri and S. L. Johnson},
journal= {arXiv preprint arXiv:2507.02756},
year = {2025}
}