Noncollinear enhancement cavity for record-high out-coupling efficiency of an extreme-UV frequency comb
Optics
2020-09-02 v2 Atomic Physics
Abstract
We demonstrate a femtosecond enhancement cavity with a crossed-beam geometry for efficient generation and extraction of extreme-ultraviolet (XUV) frequency combs at a 154 MHz repetition rate. We achieve a record-high out-coupled power of 600 {\mu}W, directly usable for spectroscopy, at a wavelength of 97 nm. This corresponds to a >60% out-coupling efficiency. The XUV power scaling and generation efficiency are similar to that achieved with a single Gaussian-mode fundamental beam inside a collinear enhancement cavity. The noncollinear geometry also opens the door for the generation of isolated attosecond pulses at >100 MHz repetition rate.
Keywords
Cite
@article{arxiv.2003.02429,
title = {Noncollinear enhancement cavity for record-high out-coupling efficiency of an extreme-UV frequency comb},
author = {Chuankun Zhang and Stephen B. Schoun and Christoph M. Heyl and Gil Porat and Mette B. Gaarde and Jun Ye},
journal= {arXiv preprint arXiv:2003.02429},
year = {2020}
}
Comments
13 pages, 5 figures