<i>AGTR2</i> Mutations in X-Linked Mental Retardation

TLDR

The study presents spatial coherence measurements of EUV light generated via high‑harmonic up‑conversion of a femtosecond laser. EUV light was produced by high‑harmonic up‑conversion of a femtosecond laser and its coherence demonstrated by recording Gabor holograms of small objects. The phase‑matched hollow‑fiber geometry produced a beam with essentially full spatial coherence, enabling tabletop EUV holography and offering low‑divergence, high‑coherence light suitable for high‑precision metrology, optical component inspection, nanometer‑resolution microscopy, and ultrafast imaging.

Abstract

We present spatial coherence measurements of extreme ultraviolet (EUV) light generated through the process of high-harmonic up-conversion of a femtosecond laser. With a phase-matched hollow-fiber geometry, the generated beam was found to exhibit essentially full spatial coherence. The coherence of this laser-like EUV source was shown by recording Gabor holograms of small objects. This work demonstrates the capability to perform EUV holography with a tabletop experimental setup. Such an EUV source, with low divergence and high spatial coherence, can be used for experiments involving high-precision metrology, inspection of optical components for EUV lithography, and microscopy and holography with nanometer resolution. Furthermore, the short time duration of the EUV radiation (a few femtoseconds) will enable EUV microscopy and holography to be performed with ultrahigh time resolution.