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Conference Papers Journal of Physics: Conference Series Year : 2013

Synchrotron infrared confocal microscope: Application to infrared 3D spectral imaging

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Frédéric Jamme
B. Lagarde
  • Function : Author
G. Giuliani
  • Function : Author
Ga Garcia
  • Function : Author

Abstract

The brightness of a synchrotron source coupled to an infrared microscope allows imaging at the so-called diffraction limit. Thus, numerous infrared beamlines around the world have been developed for infrared chemical imaging. Infrared microscopes employ Schwarzschild objectives, which are based on two spherical mirrors centered on a common optical axis. A common drawback of the latter design comes with the central obscuring of the incident beam and the corresponding diffraction effects. However, in this work we are taking advantage of the "shadow" below the primary mirror in order to "vertically" probe our sample and record depth profiling images. We recorded infrared confocal images of liquid water occluded inside a quartz micro-cavity and reconstructed a 3D infrared image based on the OH stretching vibrational bands. Although only a restricted sample size can be analyzed, we demonstrate here the feasibility of a 3D confocal infrared measurement. The chemical profiles have been calculated along the Z-axis of the water inclusion to study its heterogeneity and water-solid interfaces.
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Dates and versions

insu-00805857 , version 1 (29-03-2013)

Licence

Attribution - CC BY 4.0

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Frédéric Jamme, B. Lagarde, G. Giuliani, Ga Garcia, Lionel Mercury. Synchrotron infrared confocal microscope: Application to infrared 3D spectral imaging. 11 Conference on Synchrotron Radiation Instrumentationh International C, Jul 2012, Lyon, France. pp.142002, ⟨10.1088/1742-6596/425/14/142002⟩. ⟨insu-00805857⟩
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