Abstract-Focal plane array IR imaging at the Australian Synchrotron

 M.J. Tobin, J. Vongsvivut, D.E. Martin, K.H. Sizeland, M.J.Hackett, R .Takechi, N .Fimorgnari, V. Lam, J.C.Mamo, E.A.Carter, B.Swarbrick, P.A.Lay, D.A.Christensen, D.Perez-Guaita, E.Lowery, P.Heraud, B.R.Wood, L.Puskar, K.R.Bambery,



https://www.sciencedirect.com/science/article/pii/S1350449517308101

A Focal Plane Array FTIR microscope has successfully been coupled to the IRM beamline at the Australian Synchrotron, following the method pioneered at previous beamlines at the SRC and NSLS I synchrotrons, whereby a wide aperture of synchrotron light is split into multiple beams and spatially reconfigured to match the entrance aperture of the FTIR instrumentation. Imaging performance has been assessed using a selection of polymer and biological samples, providing diffraction-limited sub-cellular lateral resolution in the biological materials. We have demonstrated that improved collection times at high lateral resolution are possible, when compared with single element point-mapping microspectroscopy, though this is achieved with a trade off in spectral noise. Future improvements in the use of an FPA detector at the Australian Synchrotron are proposed, including removal of coherent interference and installation of a dedicated beam extraction port for FPA microspectroscopy.