| Vol. 11, No. 19 |
September 22, 2003 |
Page: 2323 - 2328 |
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Coherence transport through imperfect x-ray optical systems
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K. A. Nugent, C. Q. Tran, and A. Roberts, The University of Melbourne
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Abstract
The latest generation of synchrotron sources, so-called third generation sources, are able to produce copious amounts of coherent radiation. However it has become evident that the experimental systems that have been developed are unable to fully utilize the coherent flux. This has led to a perception that coherence is lost while the radiation is transported down the beamline. However it is well established that the degree of coherence must be preserved, or increased, by an experimental system, and so this apparent “decoherence” must have its origin in the nature of the measurement process. In this paper we use phase space methods to present an argument that the loss of useful coherent flux can be attributed to unresolved speckle in the x-ray beam.
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Classifications
(340) X-ray optics (340.6720) Synchrotron radiation
(030) Coherence and statistical optics (030.1640) Coherence
(030) Coherence and statistical optics (030.1670) Coherent optical effects
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History
Original Manuscript: August 01, 2003
Revised Manuscript: September 11, 2003
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Citation
K. A. Nugent,
C. Q. Tran, and
A. Roberts, "Coherence transport through imperfect x-ray optical systems," Opt. Express 11, 2323-2328 (2003),
http://www.opticsexpress.org/abstract.cfm?URI=OPEX-11-19-2323
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References
| 1. |
A. Snigirev, I Snigereva, V.Kohn, S.Kuznetsov, I Schelokov, “On the possibilities of x-ray phase contrast microimaging by coherent high-energy synchrotron radiation,” Rev. Sci. Instrum. 66, 5846-5492 (1995). |
| 2. |
K.A. Nugent, T.E.Gureyev, D.F. Cookson, D.Paganin and Z.Barnea, “Quantitative phase imaging using hard x-rays,” Phy. Rev. Letts. 77, 2961-2964 (1996) |
| 3. |
P. Cloetens, M. Pateyron-Salome, J.Y.Buffiere, G.Peix, J.Baruchel, F.Peyrin and M.Sclenker, “Observation of microstructure and damage in materials by phase sensitive radiography and tomography,” J. Appl. Phys. 81, 5878-5886 (1997) |
| 4. |
S.W.Wilkins, T.E.Gureyev, D.Gao, A.Pogany and A.W.Stevenson, “Phase-contrast imaging using polychromatic hard x-rays,” Nature 384, 335-338 (1996) |
| 5. |
V.E. Coslett and W.C. Nixon, X-ray microscopy, (Cambridge University Press, Cambridge, 1960) |
| 6. |
M. Sutton, S.G.J. Mochrie, T. Greytak, S.E. Nagler, L.E. Berman, G.A. Held and G.B. Stephenson “Observation Of Speckle By Diffraction With Coherent X-Rays,” Nature 352, 608-610 (1991) |
| 7. |
I.A. Vartanyants and I.K. Robinson, “Origins of decoherence in coherent X-ray diffraction experiments,” Opt. Commun. 222, 29-50 (2003). |
| 8. |
D. Paterson, B.E. Allman , P.J. McMahon, J.J.A. Lin, N. Moldovan, K.A. Nugent, I. McNulty, C.T. Chantler, C.C. Retsch, T.H.K. Irving and D.C. Mancini, “Spatial coherence measurement of X-ray undulator radiation,” Opt. Commun. 195 (1-4): 79-84 (2001) |
| 9. |
M. Born and E. Wolf, Principles of Optics, 6th edition, (Pergamon, Oxford, 1980). |
| 10. |
A. Walther, “Radiometry and Coherence,” J. Opt. Soc. Am. 58, 1256 (1968) |
| 11. |
M.J. Bastiaans, “Application Of The Wigner Distribution Function To Partially Coherent-Light,” J. Opt. Soc. Am. A 3, 1227-1238 (1986) |
| 12. |
L. Mandel and E. Wolf, Optical Coherence and Quantum Optics, (Cambridge University Press, Cambridge, 1995) |
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