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Title: Reflection of attosecond x-ray free electron laser pulses

Abstract

In order to utilize hard x-ray free electron lasers (XFEL's) when they are extended to attosecond pulse lengths, it is necessary to choose optical elements with minimal response time. Specular grazing-incidence optics made of low-Z materials are popular candidates for reflectors since they are likely to withstand x-ray damage and provide sufficiently large reflectivities. Using linear-optics reflection theory, we calculated the transient reflectivity of a delta-function electric pulse from a homogenous semi-infinite medium as a function of angle of incidence for s- and p-polarized light. We specifically considered the pulse response of beryllium, diamond, silicon carbide, and silicon, all of which are of relevance to the XFEL's that are currently being built. We found that the media emit energy in a damped oscillatory way, and that the impulse-response times are shorter than 0.3 fs for normal incidence. For grazing incidence, the impulse-response time is substantially shorter, making grazing-incidence mirrors a good choice for deep subfemtosecond reflective optics.

Authors:
;  [1]
  1. Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551 (United States)
Publication Date:
OSTI Identifier:
20953228
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 78; Journal Issue: 1; Other Information: DOI: 10.1063/1.2428271; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BERYLLIUM; DAMAGE; DIAMONDS; FREE ELECTRON LASERS; HARD X RADIATION; INCIDENCE ANGLE; LENGTH; MIRRORS; OPTICS; PULSES; REFLECTION; REFLECTIVITY; SILICON; SILICON CARBIDES; X-RAY LASERS

Citation Formats

Hau-Riege, Stefan P., and Chapman, Henry N. Reflection of attosecond x-ray free electron laser pulses. United States: N. p., 2007. Web. doi:10.1063/1.2428271.
Hau-Riege, Stefan P., & Chapman, Henry N. Reflection of attosecond x-ray free electron laser pulses. United States. doi:10.1063/1.2428271.
Hau-Riege, Stefan P., and Chapman, Henry N. Mon . "Reflection of attosecond x-ray free electron laser pulses". United States. doi:10.1063/1.2428271.
@article{osti_20953228,
title = {Reflection of attosecond x-ray free electron laser pulses},
author = {Hau-Riege, Stefan P. and Chapman, Henry N.},
abstractNote = {In order to utilize hard x-ray free electron lasers (XFEL's) when they are extended to attosecond pulse lengths, it is necessary to choose optical elements with minimal response time. Specular grazing-incidence optics made of low-Z materials are popular candidates for reflectors since they are likely to withstand x-ray damage and provide sufficiently large reflectivities. Using linear-optics reflection theory, we calculated the transient reflectivity of a delta-function electric pulse from a homogenous semi-infinite medium as a function of angle of incidence for s- and p-polarized light. We specifically considered the pulse response of beryllium, diamond, silicon carbide, and silicon, all of which are of relevance to the XFEL's that are currently being built. We found that the media emit energy in a damped oscillatory way, and that the impulse-response times are shorter than 0.3 fs for normal incidence. For grazing incidence, the impulse-response time is substantially shorter, making grazing-incidence mirrors a good choice for deep subfemtosecond reflective optics.},
doi = {10.1063/1.2428271},
journal = {Review of Scientific Instruments},
number = 1,
volume = 78,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}