Micromirror-based manipulation of synchrotron X-ray beams

D. A. Walko, Pice Chen, I. W. Jung, D. Lopez, C. P. Schwartz, G. K. Shenoy, Jin Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Synchrotron beamlines typically use macroscopic, quasi-static optics to manipulate x-ray beams. We present the use of dynamic microelectromechanical systems-based optics (MEMS) to temporally modulate synchrotron x-ray beams. We demonstrate this concept using single-crystal torsional MEMS micromirrors oscillating at frequencies of 75 kHz. Such a MEMS micromirror, with lateral dimensions of a few hundred micrometers, can interact with x rays by operating in grazing-incidence reflection geometry; x rays are deflected only when an x-ray pulse is incident on the rotating micromirror under appropriate conditions, i.e., at an angle less than the critical angle for reflectivity. The time window for such deflections depends on the frequency and amplitude of the MEMS rotation. We demonstrate that reflection geometry can produce a time window of a few microseconds. We further demonstrate that MEMS optics can isolate x rays from a selected synchrotron bunch or group of bunches. With ray-trace simulations we explain the currently achievable time windows and suggest a path toward improvements.

Original languageEnglish (US)
Title of host publicationAdvances in X-Ray/EUV Optics and Components XII
EditorsChristian Morawe, Ali M. Khounsary, Shunji Goto
PublisherSPIE
ISBN (Electronic)9781510612297
DOIs
StatePublished - 2017
EventAdvances in X-Ray/EUV Optics and Components XII 2017 - San Diego, United States
Duration: Aug 8 2017Aug 9 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10386
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdvances in X-Ray/EUV Optics and Components XII 2017
CountryUnited States
CitySan Diego
Period8/8/178/9/17

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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