Out of focus ultrafast processing of metals for reduced secondary electron yield

Robin Uren; Amin Din; Stefan Wackerow; E.  Bez; S. Pfeiffer; M.  Rimoldi; Marcel Himmerlich; Mauro Taborelli; Amin Abdolvand

doi:10.1364/OME.484235

Out of focus ultrafast processing of metals for reduced secondary electron yield

Robin Uren (Lead / Corresponding author), Amin Din, Stefan Wackerow, E. Bez, S. Pfeiffer, M. Rimoldi, Marcel Himmerlich, Mauro Taborelli, Amin Abdolvand

Mechanical and Industrial Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

84 Downloads (Pure)

Abstract

We have demonstrated out-of-focus ultrafast pulsed laser processing of copper with a variable working distance, without the need for mechanical movement. This was achieved by employing a diffractive optical element. The method has been demonstrated in a practical application to reduce the secondary electron yield (SEY) of copper to below 1.3. We show that using an extended focus element not only increases the consistency of processing across a range of working distances, but also changes the topography of the produced structures, reducing the SEY. This presented approach shows promise in facilitating the Large Hadron Collider’s (LHC’s) upcoming high luminosity upgrade by preventing electron clouds.

Original language	English
Pages (from-to)	1228-1240
Number of pages	13
Journal	Optical Materials Express
Volume	13
Issue number	5
Early online date	10 Apr 2023
DOIs	https://doi.org/10.1364/OME.484235
Publication status	Published - May 2023

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10.1364/OME.484235Licence: CC BY

Final Published VersionFinal published version, 4.75 MBLicence: CC BY

HL-LHC-UK Phase 2 (Joint with Universities of Manchester, Oxford, Southampton, Liverpool, London and Lancaster and STFC)
Abdolvand, A. (Investigator)
Science and Technology Facilities Council
1/01/20 → 31/03/26
Project: Research

Laser Surface Engineering for the Reduction of Secondary Electron Emission in Metals and Ceramics
Din, A. (Author), Abdolvand, A. (Supervisor) & Zolotovskaya, S. A. (Supervisor), 2025
Student thesis: Doctoral Thesis › Doctor of Philosophy

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Out of Focus Ultrafast Processing of Metals for Reduced Secondary Electron Yield
Uren, R. (Creator), University of Dundee, 23 Mar 2023
DOI: 10.15132/10000196
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Cite this

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AU - Uren, Robin

AU - Din, Amin

AU - Wackerow, Stefan

AU - Bez, E.

AU - Pfeiffer, S.

AU - Rimoldi, M.

AU - Himmerlich, Marcel

AU - Taborelli, Mauro

AU - Abdolvand, Amin

PY - 2023/5

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N2 - We have demonstrated out-of-focus ultrafast pulsed laser processing of copper with a variable working distance, without the need for mechanical movement. This was achieved by employing a diffractive optical element. The method has been demonstrated in a practical application to reduce the secondary electron yield (SEY) of copper to below 1.3. We show that using an extended focus element not only increases the consistency of processing across a range of working distances, but also changes the topography of the produced structures, reducing the SEY. This presented approach shows promise in facilitating the Large Hadron Collider’s (LHC’s) upcoming high luminosity upgrade by preventing electron clouds.

AB - We have demonstrated out-of-focus ultrafast pulsed laser processing of copper with a variable working distance, without the need for mechanical movement. This was achieved by employing a diffractive optical element. The method has been demonstrated in a practical application to reduce the secondary electron yield (SEY) of copper to below 1.3. We show that using an extended focus element not only increases the consistency of processing across a range of working distances, but also changes the topography of the produced structures, reducing the SEY. This presented approach shows promise in facilitating the Large Hadron Collider’s (LHC’s) upcoming high luminosity upgrade by preventing electron clouds.

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DO - 10.1364/OME.484235

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SN - 2159-3930

VL - 13

SP - 1228

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JO - Optical Materials Express

JF - Optical Materials Express

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ER -

Out of focus ultrafast processing of metals for reduced secondary electron yield

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Projects

HL-LHC-UK Phase 2 (Joint with Universities of Manchester, Oxford, Southampton, Liverpool, London and Lancaster and STFC)

Student theses

Laser Surface Engineering for the Reduction of Secondary Electron Emission in Metals and Ceramics

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Out of Focus Ultrafast Processing of Metals for Reduced Secondary Electron Yield

Cite this