Zobrazeno 1 - 10
of 271
pro vyhledávání: '"Kenneth A, Goldberg"'
Autor:
Kenneth A. Goldberg, Kyle T. La Fleche
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 5, Pp 1161-1167 (2024)
Modeling the behavior of a prototype cantilevered X-ray adaptive mirror (held from one end) demonstrates its potential for use on high-performance X-ray beamlines. Similar adaptive mirrors are used on X-ray beamlines to compensate optical aberrations
Externí odkaz:
https://doaj.org/article/eebbb8e8c08f4c7fbd0df341cd9f3f87
Publikováno v:
Journal of Synchrotron Radiation, Vol 30, Iss 3, Pp 514-518 (2023)
Mirror-centered, closed-form expressions for hyperbolic surfaces used in X-ray beamlines have been derived. Hyperbolic mirrors create a virtual focus or source point and can be used to lengthen or shorten the effective focal distance of a compound op
Externí odkaz:
https://doaj.org/article/ef1fb575c28d4c26a9872aebd881832b
Autor:
Gautam Gunjala, Antoine Wojdyla, Kenneth A. Goldberg, Zhi Qiao, Xianbo Shi, Lahsen Assoufid, Laura Waller
Publikováno v:
Journal of Synchrotron Radiation, Vol 30, Iss 1, Pp 57-64 (2023)
Adaptive X-ray mirrors are being adopted on high-coherent-flux synchrotron and X-ray free-electron laser beamlines where dynamic phase control and aberration compensation are necessary to preserve wavefront quality from source to sample, yet challeng
Externí odkaz:
https://doaj.org/article/f462fc992f714735950c9536c0b5fc8a
Autor:
Kenneth A. Goldberg
Publikováno v:
Journal of Synchrotron Radiation, Vol 29, Iss 4, Pp 985-990 (2022)
On X-ray beamlines and telescopes, glancing-incidence mirrors with parabolic profiles are used to collimate, focus, and collect light. Here, analytic descriptions for paraboloidal, plane-parabolic, and parabolic cylindrical mirrors in several congrue
Externí odkaz:
https://doaj.org/article/ec55ab26d7184ab5a7a462c22e37aae1
Autor:
Kenneth A. Goldberg
Publikováno v:
Journal of Synchrotron Radiation, Vol 29, Iss 4, Pp 991-996 (2022)
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
Externí odkaz:
https://doaj.org/article/f225e5badcce430ba094d378cdc37425
Publikováno v:
Sensors, Vol 21, Iss 2, p 536 (2021)
New, high-coherent-flux X-ray beamlines at synchrotron and free-electron laser light sources rely on wavefront sensors to achieve and maintain optimal alignment under dynamic operating conditions. This includes feedback to adaptive X-ray optics. We d
Externí odkaz:
https://doaj.org/article/970ac11dc6a44fb6bcc2e87b49dd952a
Autor:
Howard A. Padmore, Manuel Sanchez del Rio, Ian Lacey, Kenneth A. Goldberg, Valeriy V. Yashchuk
Publikováno v:
Journal of synchrotron radiation, vol 28, iss Pt 4
The diaboloid is a reflecting surface that converts a spherical wave to a cylindrical wave. This complex surface may find application in new Advanced Light Source bending-magnet beamlines or in other beamlines that now use toroidal optics for astigma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f402bee169806e2836485f42cc2d3264
https://escholarship.org/uc/item/6m76b7x0
https://escholarship.org/uc/item/6m76b7x0
Autor:
Kenneth A. Goldberg
Publikováno v:
Optics letters, vol 46, iss 4
Now in use on x-ray beamlines worldwide, shearing interferometry and Hartmann wavefront sensing provide effective feedback for measuring and optimizing high-quality beams. Conventionally, both approaches spatially modulate the beam properties (amplit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8b78b99b43c9d4b47ca960c48009ae8
https://pubmed.ncbi.nlm.nih.gov/33577500
https://pubmed.ncbi.nlm.nih.gov/33577500
Autor:
Kenneth A. Goldberg, Wayne R. McKinney, Howard A. Padmore, Valeriy V. Yashchuk, Ian Lacey, Manuel Sanchez del Rio
Publikováno v:
Journal of synchrotron radiation, vol 28, iss Pt 4
A new type of optical element that can focus a cylindrical wave to a point focus (or vice versa) is analytically described. Such waves are, for example, produced in a beamline where light is collimated in one direction and then doubly focused by a si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cb8c66bf47b62710e52193d799dd83c
https://pubmed.ncbi.nlm.nih.gov/34212866
https://pubmed.ncbi.nlm.nih.gov/34212866
Publikováno v:
Optics letters, vol 45, iss 17
We demonstrate a reflective wavefront sensor grating suitable for the characterization of high-quality x-ray beamlines and optical systems with high power densities. Operating at glancing incidence angles, the optical element is deeply etched with a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cee3b0ec34a9a694655681553aedae47
https://pubmed.ncbi.nlm.nih.gov/32870834
https://pubmed.ncbi.nlm.nih.gov/32870834