Total reflection amorphous carbon mirrors for vacuum ultraviolet free electron lasers

被引：42

作者：

Steeg, B

Juha, L

Feldhaus, J

Jacobi, S

Sobierajski, R

Michaelsen, C

Andrejczuk, A

Krzywinski, J

机构：

[1] DESY, HASYLAB, D-22603 Hamburg, Germany

[2] GKSS Forschungszentrum Geesthacht GmbH, D-21502 Geesthacht, Germany

[3] Warsaw Univ Technol, PL-00661 Warsaw, Poland

[4] Incoatec GmbH, D-21502 Geesthacht, Germany

[5] Univ Bialystok, Inst Expt Phys, PL-15424 Bialystok, Poland

[6] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 05期

关键词：

D O I：

10.1063/1.1645320

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Sputter-deposited amorphous carbon coatings of high optical quality and very high radiation stability will be used as reflecting optical elements for free electron laser (FEL) applications in the vacuum ultraviolet (VUV) and soft x-ray spectral regions. Their reflectivity at grazing angles of 2degrees is typically 94-96% for photon energies between 50 and 250 eV. Using the focused radiation (lambda=98 nm) of the VUV FEL at Deutsches Elektronen-Synchrotron DESY the damage threshold of such coatings was determined to 0.07 J/cm(2). Ripples with a spatial period of 76 nm were found on the surfaces damaged by the FEL radiation. (C) 2004 American Institute of Physics.

引用

页码：657 / 659

页数：3

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