| Download | - View accepted manuscript: Octave-spanning hyperspectral coherent diffractive imaging in the extreme ultraviolet range (PDF, 881 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1364/OE.23.028960 |
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| Author | Search for: Meng, Yijan1; Search for: Zhang, Chunmei1; Search for: Marceau, Claude1; Search for: Naumov, A. Yu.1; Search for: Corkum, P. B.1; Search for: Villeneuve, D. M.1 |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Abstract | Soft x-ray microscopy is a powerful imaging technique that provides sub-micron spatial resolution, as well as chemical specificity using core-level near-edge x-ray absorption fine structure (NEXAFS). Near the carbon K-edge (280–300 eV) biological samples exhibit high contrast, and the detailed spectrum contains information about the local chemical environment of the atoms. Most soft x-ray imaging takes place on dedicated beamlines at synchrotron facilities or at x-ray free electron laser facilities. Tabletop femtosecond laser systems are now able to produce coherent radiation at the carbon K-edge and beyond through the process of high harmonic generation (HHG). The broad bandwidth of HHG is seemingly a limitation to imaging, since x-ray optical elements such as Fresnel zone plates require monochromatic sources. Counter-intuitively, the broad bandwidth of HHG sources can be beneficial as it permits chemically-specific hyperspectral imaging. We apply two separate techniques – Fourier transform spectroscopy, and lensless holographic imaging – to obtain images of an object simultaneously at multiple wavelengths using an octave-spanning high harmonic source with photon energies up to 30 eV. We use an interferometric delay reference to correct for nanometer-scale fluctuations between the two HHG sources. |
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| Publication date | 2015-10-28 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21277167 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 7ec3c043-41e2-4e8b-8ec7-c444dff6cbbd |
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| Record created | 2015-12-23 |
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| Record modified | 2020-06-04 |
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