Ronchi shearing interferometry for wavefronts with circular symmetry
Abstract
Ronchi testing of a focused electromagnetic wave has in the last few years been used extensively at X-ray free-electron laser (FEL) facilities to qualitatively evaluate the wavefront of the beam. It is a quick and straightforward test, is easy to interpret on the fly, and can be used to align phase plates that correct the focus of aberrated beams. In general, a single Ronchigram is not sufficient to gain complete quantitative knowledge of the wavefront. However the compound refractive lenses that are commonly used at X-ray FELs exhibit a strong circular symmetry in their aberration, and this can be exploited. Furthermore, a simple algorithm that uses a single recorded Ronchigram to recover the full wavefront of a nano-focused beam, assuming circular symmetry, is presented, and applied to experimental measurements at the Matter in Extreme Conditions instrument at the Linac Coherent Light Source.
- Authors:
-
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1769028
- Grant/Contract Number:
- AC02-76SF00515; SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Synchrotron Radiation (Online)
- Additional Journal Information:
- Journal Name: Journal of Synchrotron Radiation (Online); Journal Volume: 27; Journal Issue: 6; Journal ID: ISSN 1600-5775
- Publisher:
- International Union of Crystallography
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; x-ray FEL; wavefront sensing; grating interferometry
Citation Formats
Nagler, Bob, Galtier, Eric C., Brown, Shaughnessy B., Heimann, Philip, Dyer, Gilliss, and Lee, Hae Ja. Ronchi shearing interferometry for wavefronts with circular symmetry. United States: N. p., 2020.
Web. doi:10.1107/s1600577520010735.
Nagler, Bob, Galtier, Eric C., Brown, Shaughnessy B., Heimann, Philip, Dyer, Gilliss, & Lee, Hae Ja. Ronchi shearing interferometry for wavefronts with circular symmetry. United States. https://doi.org/10.1107/s1600577520010735
Nagler, Bob, Galtier, Eric C., Brown, Shaughnessy B., Heimann, Philip, Dyer, Gilliss, and Lee, Hae Ja. Mon .
"Ronchi shearing interferometry for wavefronts with circular symmetry". United States. https://doi.org/10.1107/s1600577520010735. https://www.osti.gov/servlets/purl/1769028.
@article{osti_1769028,
title = {Ronchi shearing interferometry for wavefronts with circular symmetry},
author = {Nagler, Bob and Galtier, Eric C. and Brown, Shaughnessy B. and Heimann, Philip and Dyer, Gilliss and Lee, Hae Ja},
abstractNote = {Ronchi testing of a focused electromagnetic wave has in the last few years been used extensively at X-ray free-electron laser (FEL) facilities to qualitatively evaluate the wavefront of the beam. It is a quick and straightforward test, is easy to interpret on the fly, and can be used to align phase plates that correct the focus of aberrated beams. In general, a single Ronchigram is not sufficient to gain complete quantitative knowledge of the wavefront. However the compound refractive lenses that are commonly used at X-ray FELs exhibit a strong circular symmetry in their aberration, and this can be exploited. Furthermore, a simple algorithm that uses a single recorded Ronchigram to recover the full wavefront of a nano-focused beam, assuming circular symmetry, is presented, and applied to experimental measurements at the Matter in Extreme Conditions instrument at the Linac Coherent Light Source.},
doi = {10.1107/s1600577520010735},
journal = {Journal of Synchrotron Radiation (Online)},
number = 6,
volume = 27,
place = {United States},
year = {Mon Sep 14 00:00:00 EDT 2020},
month = {Mon Sep 14 00:00:00 EDT 2020}
}
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