Phys. Rev. ST Accel. Beams 12, 030703 (2009) [6 pages]Tunable optical cavity for an x-ray free-electron-laser oscillator
An x-ray free-electron laser oscillator proposed recently for hard x rays [ K. Kim, Y. Shvyd’ko and S. Reiche Phys. Rev. Lett. 100 244802 (2008)] can be made tunable by using an x-ray cavity composed of four crystals, instead of two. The tunability of x-ray energy will significantly enhance the usefulness of an x-ray free-electron laser oscillator. We present a detailed analysis of the four-crystal optical cavity and choice of crystals for several applications: inelastic x-ray scattering, nuclear resonant scattering, bulk-sensitive hard x-ray photoemission spectroscopy, other high-energy-resolution (≲1 meV) spectroscopic probes, and for imaging with hard x rays at near-atomic resolution (≃1 nm). This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.12.030703
DOI:
10.1103/PhysRevSTAB.12.030703
PACS:
41.60.Cr, 41.50.+h, 42.55.Vc, 61.05.C−
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