Derivation of closed-form ellipsoidal X-ray mirror shapes from Fermat's principle
Journal Article
·
· Journal of Synchrotron Radiation (Online)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Ellipsoidal and plane-elliptical surfaces are widely used as reflective, point-to-point focusing elements in many optical systems, including X-ray optics. Here the classical optical path function approach of Fermat is applied to derive a closed-form expression for these surfaces that are uniquely described by the object and image distances and the angle of incidence at a point on a mirror surface. A compact description facilitates design, modeling, fabrication, and testing to arbitrary accuracy. Congruent surfaces in two useful coordinate systems — a system centered on the ellipsoid's axes of symmetry and a mirror-centered or `vertex' system with the surface tangent to the xy plane at the mirror's center — are presented. Expressions for the local slope and radii of curvature are derived from the result, and the first several terms of the Maclauren series expansion are provided about the mirror center.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1894090
- Journal Information:
- Journal of Synchrotron Radiation (Online), Journal Name: Journal of Synchrotron Radiation (Online) Journal Issue: 4 Vol. 29; ISSN 1600-5775
- Publisher:
- International Union of CrystallographyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Analytic descriptions of parabolic X-ray mirrors
Stitching interferometry for ellipsoidal x-ray mirrors
Off-axis representation of hyperbolic mirror shapes for X-ray beamlines
Journal Article
·
Tue May 24 20:00:00 EDT 2022
· Journal of Synchrotron Radiation (Online)
·
OSTI ID:1893887
Stitching interferometry for ellipsoidal x-ray mirrors
Journal Article
·
Sun May 15 00:00:00 EDT 2016
· Review of Scientific Instruments
·
OSTI ID:22597926
Off-axis representation of hyperbolic mirror shapes for X-ray beamlines
Journal Article
·
Thu Mar 09 19:00:00 EST 2023
· Journal of Synchrotron Radiation (Online)
·
OSTI ID:2234134