High-energy tunable ultraviolet pulses generated by optical leaky wave in filamentation
Abstract
Ultraviolet pulses could open up new opportunities for the study of strong-field physics and ultrafast science. However, the existing methods for generating ultra-violet pulses face difficulties in fulfilling the twofold requirements of high energy and wavelength tunability simultaneously. Here, we theoretically demonstrate the generation of high-energy and wavelength tunable ultraviolet pulses in preformed air-plasma channels via the leaky wave emission. The output ultraviolet pulse has a tunable wavelength ranging from 250 nm to 430 nm and an energy level up to sub-mJ. An octave-spanning ultraviolet supercontinuum with a flatness better than 3 dB can also be obtained via longitudinally modulated dispersion. Such a high-energy tunable ultraviolet light source may provide promising opportunities for characterization of ultrafast phenomena such as molecular breakup, and also an important driving source for the generation of high-energy attosecond pulses.
Cite
@article{arxiv.2407.13173,
title = {High-energy tunable ultraviolet pulses generated by optical leaky wave in filamentation},
author = {Litong Xu and Tingting Xi},
journal= {arXiv preprint arXiv:2407.13173},
year = {2024}
}