Advanced experimental applications for x-ray transmission gratings Spectroscopy using a novel grating fabrication method

TL;DR

This paper introduces a new fabrication method for soft x-ray transmission gratings using Focused-Ion-Beam technology, enabling high-quality, versatile gratings for advanced x-ray spectroscopy and diagnostics.

Contribution

The paper presents a novel FIB-based fabrication technique for high-precision, customizable soft x-ray transmission gratings on TEM grids, enhancing spectroscopy capabilities.

Findings

High-quality gratings with superb accuracy achieved

Enables calibration and diagnostics in the 100-3000 eV range

Allows fabrication of double gratings for advanced applications

Abstract

A novel fabrication method for soft x-ray transmission grating and other optical elements is presented. The method uses Focused-Ion-Beam (FIB) technology to fabricate high-quality free standing grating bars on Transmission Electron Microscopy grids (TEM-grid). High quality transmission gratings are obtained with superb accuracy and versatility. Using these gratings and back-illuminated CCD camera, absolutely calibrated x-ray spectra can be acquired for soft x-ray source diagnostics in the 100-3000 eV spectral range. Double grating combinations of identical or different parameters are easily fabricated, allowing advanced one-shot application of transmission grating spectroscopy. These applications include spectroscopy with different spectral resolutions, bandwidths, dynamic ranges, and may serve for identification of high-order contribution, and spectral calibrations of various x-ray optical elements.