Spatial coherence diagnostic for x-ray lasers

James E. Trebes; Keith A. Nugent; Stanley Mrowka; Richard A. London; Troy W. Barbee Jr.; Michael R. Carter; Brian J. MacGowan; Dennis L. Matthews; Luiz Barroca Da Silva; Gary F. Stone; Michael D. Feit

doi:10.1117/12.134814

5 February 1992 Spatial coherence diagnostic for x-ray lasers

James E. Trebes, Keith A. Nugent, Stanley Mrowka, Richard A. London, Troy W. Barbee Jr., Michael R. Carter, Brian J. MacGowan, Dennis L. Matthews, Luiz Barroca Da Silva, Gary F. Stone, Michael D. Feit

Author Affiliations +

Proceedings Volume 1551, Ultrashort Wavelength Lasers; (1992) https://doi.org/10.1117/12.134814
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

The spatial coherence of a neon-like selenium x-ray laser operating at 206 and 210 angstroms has been measured using a technique based on partially coherent x-ray diffraction. The time integrated spatial coherence of the selenium x-ray laser was determined to be equal to that of a quasi-monochromatic spatially incoherent disk source whose diameter is comparable to the line focus of the visible light laser pumping the x-ray laser. The spatial coherence was improved by narrowing the line focus width. Laboratory x-ray lasers have been available for six years as potential tools for research. Their basic characteristics such as output energy, pulselength, linewidth, and divergence have been measured. Knowledge of these characteristics has resulted in x-ray lasers being used in some preliminary applications experiments including photo-ionization physics, contact microscopy of cells, and holography. Future applications of x-ray lasers, such as nonlinear x-ray optics and holographic microscopy of biological microstructures, require a detailed knowledge of the spatial coherence. This paper presents the first measurement of the spatial coherence of an x-ray laser.

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James E. Trebes, Keith A. Nugent, Stanley Mrowka, Richard A. London, Troy W. Barbee Jr., Michael R. Carter, Brian J. MacGowan, Dennis L. Matthews, Luiz Barroca Da Silva, Gary F. Stone, and Michael D. Feit "Spatial coherence diagnostic for x-ray lasers", Proc. SPIE 1551, Ultrashort Wavelength Lasers, (5 February 1992); https://doi.org/10.1117/12.134814

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KEYWORDS

X-ray lasers

Spatial coherence

Diffraction

Selenium

X-rays

Diagnostics

Fourier transforms

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