13 September 2012 Single-shot multiwavelength shape measurements with restricted aperture
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Abstract
We propose a new application of broad band lasers for digital holography. The aim is to capture the shape of objects by a single hologram using multiple wavelengths. Our approach is to separate the reference wave spectrally by a grating while the object wave remains unaffected. This leads to many lamellar holograms in one hologram. As consequence different restrictions like aperture and wavelength dependency of the reconstruction algorithm have to be taken into account. In experiments we have successfully demonstrate that lamellar holograms can be generated, reconstructed and that all necessary steps for shape measurement are accomplishable.
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S. Huferath-von Luepke, S. Huferath-von Luepke, E. N. Kamau, E. N. Kamau, Th. Kreis, Th. Kreis, C. von Kopylow, C. von Kopylow, "Single-shot multiwavelength shape measurements with restricted aperture", Proc. SPIE 8493, Interferometry XVI: Techniques and Analysis, 84930V (13 September 2012); doi: 10.1117/12.929782; https://doi.org/10.1117/12.929782
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